{"id":6172,"date":"2025-10-09T12:51:00","date_gmt":"2025-10-09T03:51:00","guid":{"rendered":"https:\/\/sky-peace.net\/?p=6172"},"modified":"2025-10-09T12:51:00","modified_gmt":"2025-10-09T03:51:00","slug":"sql-over-window","status":"publish","type":"post","link":"https:\/\/sky-peace.net\/certified\/sql-over-window\/","title":{"rendered":"SQL\u306e\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u3092\u76f4\u611f\u3067\u7406\u89e3\u3059\u308b\uff5cOVER\u53e5\u3068WINDOW\u53e5\u306e\u4f4d\u7f6e\u3068\u5f79\u5272"},"content":{"rendered":"

SQL\u3092\u5b66\u7fd2\u3057\u3066\u3044\u308b\u3068\u3001\u591a\u304f\u306e\u4eba\u304c\u300c\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u300d\u306e\u58c1\u306b\u7a81\u304d\u5f53\u305f\u308a\u307e\u3059\u3002\u300cOVER<\/code>\u53e5\u3063\u3066\u4f55\u306e\u305f\u3081\u306b\u3042\u308b\u306e\uff1f\u300d\u300cWINDOW<\/code>\u53e5\u3068WITH<\/code>\u53e5\u306f\u3069\u3046\u9055\u3046\u306e\uff1f\u300d\u3068\u3044\u3063\u305f\u7591\u554f\u304b\u3089\u3001PARTITION BY<\/code>\u3084ORDER BY<\/code>\u304c\u7d61\u307f\u5408\u3063\u305f\u8907\u96d1\u306a\u69cb\u6587\u306b\u6df7\u4e71\u3057\u3066\u3057\u307e\u3046\u30b1\u30fc\u30b9\u306f\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u3002\u7279\u306b\u3001\u5fdc\u7528\u60c5\u5831\u6280\u8853\u8005\u8a66\u9a13\u3084\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30b9\u30da-\u30b7\u30e3\u30ea\u30b9\u30c8\u8a66\u9a13\u3067\u306f\u3001\u3053\u306e\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u3092\u7406\u89e3\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u304c\u3001\u9577\u6587SQL\u554f\u984c\u3092\u89e3\u304f\u30ab\u30ae\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n

GROUP BY<\/code>\u53e5\u306e\u3088\u3046\u306b\u5143\u3005\u306e\u884c\u3092\u96c6\u7d04\u3057\u3066\u3057\u307e\u3046\u3053\u3068\u306a\u304f\u3001\u5404\u884c\u306e\u60c5\u5831\u3092\u4fdd\u6301\u3057\u305f\u307e\u307e\u96c6\u8a08\u3084\u9806\u4f4d\u4ed8\u3051\u304c\u3067\u304d\u308b\u306e\u304c\u3001\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u306e\u6700\u5927\u306e\u5f37\u307f\u3067\u3059\u3002\u3057\u304b\u3057\u3001\u305d\u306e\u5f37\u529b\u306a\u6a5f\u80fd\u3068\u5f15\u304d\u63db\u3048\u306b\u3001\u69cb\u6587\u304c\u5c11\u3057\u8907\u96d1\u306b\u898b\u3048\u308b\u306e\u3082\u4e8b\u5b9f\u3002<\/p>\n

\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u305d\u3093\u306a\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u3092\u300c\u3069\u306e\u53e5\u304c<\/strong>\u300d\u300c\u3069\u306e\u4f4d\u7f6e\u3067<\/strong>\u300d\u300c\u4f55\u306e\u5f79\u5272\u3092\u679c\u305f\u3059\u306e\u304b<\/strong>\u300d\u3068\u3044\u3046\uff13\u3064\u306e\u30dd\u30a4\u30f3\u30c8\u306b\u7d5e\u3063\u3066\u3001\u5fb9\u5e95\u7684\u306b\u5206\u89e3\u30fb\u6574\u7406\u3057\u307e\u3059\u3002\u8c4a\u5bcc\u306a\u56f3\u89e3\u3068\u5177\u4f53\u7684\u306aSQL\u30b3\u30fc\u30c9\u4f8b\u3092\u901a\u3057\u3066\u3001\u305d\u308c\u305e\u308c\u306e\u69cb\u6587\u304c\u6301\u3064\u610f\u5473\u3068\u6b63\u3057\u3044\u4f4d\u7f6e\u95a2\u4fc2\u3092\u4f53\u7cfb\u7684\u306b\u7406\u89e3\u3057\u3001\u82e6\u624b\u610f\u8b58\u3092\u6255\u62ed\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n

SQL\u306e\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u3068\u306f\uff1fGROUP BY\u306b\u3088\u308b\u96c6\u8a08\u3068\u306e\u9055\u3044\u3092\u5fb9\u5e95\u89e3\u8aac<\/h2>\n

\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u3068\u306f\u3001\u4e00\u8a00\u3067\u3044\u3048\u3070\u300c\u5143\u3068\u306a\u308b\u8868\u306e\u884c\u6570\u3092\u5909\u3048\u305a\u306b\u3001\u96c6\u8a08\u3084\u9806\u4f4d\u4ed8\u3051\u306e\u7d50\u679c\u3092\u5404\u884c\u306b\u8ffd\u52a0\u3067\u304d\u308b\u95a2\u6570\u300d<\/strong>\u3067\u3059\u3002\u300c\u5206\u6790\u95a2\u6570\u300d\u3084\u300c\u9806\u5e8f\u95a2\u6570\u300d\u3068\u3082\u547c\u3070\u308c\u3001\u7279\u306b\u30c7\u30fc\u30bf\u5206\u6790\u3084\u8907\u96d1\u306a\u30ec\u30dd\u30fc\u30c8\u4f5c\u6210\u306e\u5834\u9762\u3067\u7d76\u5927\u306a\u52b9\u679c\u3092\u767a\u63ee\u3057\u307e\u3059\u3002<\/p>\n

\u901a\u5e38\u306e\u96c6\u8a08\u95a2\u6570\uff08GROUP BY\uff09\u3068\u306e\u6c7a\u5b9a\u7684\u306a\u9055\u3044<\/h3>\n

\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u306e\u4fbf\u5229\u3055\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u3001\u307e\u305a\u306fSUM()<\/code>\u306e\u3088\u3046\u306a\u901a\u5e38\u306e\u96c6\u8a08\u95a2\u6570\u3068\u6bd4\u8f03\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n

\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5f93\u696d\u54e1\u30c6\u30fc\u30d6\u30ebemployees<\/code>\u304c\u3042\u308b\u3068\u3057\u307e\u3059\u3002<\/p>\n\n\n\n\n\n\n\n\n\n
employee_id<\/th>\nemployee_name<\/th>\ndepartment<\/th>\nsalary<\/th>\n<\/tr>\n<\/thead>\n
101<\/td>\n\u4f50\u85e4<\/td>\n\u55b6\u696d\u90e8<\/td>\n500<\/td>\n<\/tr>\n
102<\/td>\n\u9234\u6728<\/td>\n\u55b6\u696d\u90e8<\/td>\n600<\/td>\n<\/tr>\n
103<\/td>\n\u9ad8\u6a4b<\/td>\n\u958b\u767a\u90e8<\/td>\n550<\/td>\n<\/tr>\n
104<\/td>\n\u7530\u4e2d<\/td>\n\u958b\u767a\u90e8<\/td>\n700<\/td>\n<\/tr>\n
105<\/td>\n\u4f0a\u85e4<\/td>\n\u958b\u767a\u90e8<\/td>\n650<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u3053\u3053\u3067\u300c\u90e8\u7f72\u3054\u3068\u306e\u7d66\u4e0e\u5408\u8a08\u300d\u3092\u8a08\u7b97\u3059\u308b\u5834\u5408\u3001\u591a\u304f\u306e\u4eba\u306fGROUP BY<\/code>\u3092\u4f7f\u3063\u305f\u4ee5\u4e0b\u306eSQL\u3092\u601d\u3044\u6d6e\u304b\u3079\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n

SELECT\n  department,\n  SUM(salary) AS total_salary\nFROM\n  employees\nGROUP BY\n  department;\n<\/code><\/pre>\n
\u3053\u306eSQL\u306e\u7d50\u679c\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n\n\n\n
department<\/th>\ntotal_salary<\/th>\n<\/tr>\n<\/thead>\n
\u55b6\u696d\u90e8<\/td>\n1100<\/td>\n<\/tr>\n
\u958b\u767a\u90e8<\/td>\n1900<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u3054\u89a7\u306e\u901a\u308a\u3001GROUP BY<\/code>\u3092\u4f7f\u3046\u3068\u3001\u5404\u90e8\u7f72\u306e\u60c5\u5831\u304c1\u884c\u306b\u96c6\u7d04\u3055\u308c\u3001\u500b\u3005\u306e\u5f93\u696d\u54e1\u306e\u30ec\u30b3\u30fc\u30c9\u306f\u7d50\u679c\u304b\u3089\u6d88\u3048\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u300c\u8981\u7d04\u30ec\u30dd\u30fc\u30c8\u300d\u3092\u4f5c\u308b\u969b\u306b\u306f\u4fbf\u5229\u3067\u3059\u304c\u3001\u300c\u500b\u3005\u306e\u5f93\u696d\u54e1\u306e\u7d66\u4e0e\u304c\u3001\u90e8\u7f72\u5168\u4f53\u306e\u5408\u8a08\u306b\u5bfe\u3057\u3066\u3069\u306e\u304f\u3089\u3044\u306e\u5272\u5408\u304b\u300d\u3068\u3044\u3063\u305f\u5206\u6790\u306f\u4e00\u5ea6\u3067\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n
\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u306a\u3089\u300c\u884c\u3092\u6d88\u3055\u305a\u306b\u300d\u96c6\u8a08\u3067\u304d\u308b<\/h3>\n
\u4e00\u65b9\u3001\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570SUM() OVER()<\/code>\u3092\u4f7f\u3046\u3068\u3001\u5143\u306e\u884c\u3092\u3059\u3079\u3066\u6b8b\u3057\u305f\u307e\u307e\u3001\u90e8\u7f72\u3054\u3068\u306e\u7d66\u4e0e\u5408\u8a08\u3092\u300c\u65b0\u3057\u3044\u5217\u300d\u3068\u3057\u3066\u8ffd\u52a0\u3067\u304d\u307e\u3059\u3002<\/p>\n
SELECT\n  employee_name,\n  department,\n  salary,\n  SUM(salary) OVER (PARTITION BY department) AS department_total_salary\nFROM\n  employees;\n<\/code><\/pre>\n
\u3053\u306eSQL\u306e\u7d50\u679c\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n\n\n\n\n\n\n
employee_name<\/th>\ndepartment<\/th>\nsalary<\/th>\ndepartment_total_salary<\/th>\n<\/tr>\n<\/thead>\n
\u4f50\u85e4<\/td>\n\u55b6\u696d\u90e8<\/td>\n500<\/td>\n1100<\/td>\n<\/tr>\n
\u9234\u6728<\/td>\n\u55b6\u696d\u90e8<\/td>\n600<\/td>\n1100<\/td>\n<\/tr>\n
\u9ad8\u6a4b<\/td>\n\u958b\u767a\u90e8<\/td>\n550<\/td>\n1900<\/td>\n<\/tr>\n
\u7530\u4e2d<\/td>\n\u958b\u767a\u90e8<\/td>\n700<\/td>\n1900<\/td>\n<\/tr>\n
\u4f0a\u85e4<\/td>\n\u958b\u767a\u90e8<\/td>\n650<\/td>\n1900<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
GROUP BY<\/code>\u3068\u306f\u7570\u306a\u308a\u3001\u5143\u306e5\u884c\u304c\u3059\u3079\u3066\u7dad\u6301\u3055\u308c\u3066\u3044\u307e\u3059\u306d\u3002\u305d\u306e\u4e0a\u3067\u3001\u5404\u884c\u306b\u300c\u81ea\u5206\u304c\u6240\u5c5e\u3059\u308b\u90e8\u7f72\u306e\u7d66\u4e0e\u5408\u8a08\u300d\u304c\u4f75\u8a18\u3055\u308c\u307e\u3057\u305f\u3002\u3053\u308c\u304c\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u306e\u6700\u5927\u306e\u7279\u5fb4\u3067\u3059\u3002<\/p>\n
\u3053\u306e\u300c\u884c\u3092\u6d88\u3055\u305a\u306b\u96c6\u8a08\u3067\u304d\u308b\u300d\u4ed5\u7d44\u307f\u306f\u3001OVER (PARTITION BY ...)<\/code>\u3068\u3044\u3046\u69cb\u6587\u304c\u300c\u3069\u306e\u7bc4\u56f2\uff08\uff1d\u30a6\u30a3\u30f3\u30c9\u30a6\uff09\u3067\u96c6\u8a08\u3059\u308b\u304b\u300d\u3092SQL\u30a8\u30f3\u30b8\u30f3\u306b\u6307\u793a\u3057\u3066\u3044\u308b\u305f\u3081\u306b\u5b9f\u73fe\u3057\u307e\u3059\u3002\u3053\u306e\u4f8b\u3067\u306f\u3001department<\/code>\u3054\u3068\u306b\u533a\u5207\u3089\u308c\u305f\u7bc4\u56f2\uff08\u55b6\u696d\u90e8\u306e2\u540d\u3001\u958b\u767a\u90e8\u306e3\u540d\uff09\u3092\u4e00\u6642\u7684\u306a\u8a08\u7b97\u7bc4\u56f2\u3068\u3057\u3066\u5408\u8a08\u5024\u3092\u7b97\u51fa\u3057\u3001\u305d\u306e\u7d50\u679c\u3092\u7bc4\u56f2\u5185\u306e\u5404\u884c\u306b\u8fd4\u3057\u3066\u3044\u308b\u306e\u3067\u3059\u3002<\/p>\n
OVER\u53e5\u306e\u5f79\u5272\u3068\u57fa\u672c\u69cb\u6587\u2502PARTITION BY\u3068ORDER BY\u3092\u4f7f\u3044\u3053\u306a\u3059<\/h2>\n
\u524d\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u767b\u5834\u3057\u305fOVER<\/code>\u53e5\u306f\u3001\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u3092\u7406\u89e3\u3059\u308b\u4e0a\u3067\u6700\u3082\u91cd\u8981\u306a\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u3059\u3002\u3053\u306e\u53e5\u306e\u5f79\u5272\u306f\u3001\u96c6\u8a08\u95a2\u6570\u3084\u9806\u4f4d\u95a2\u6570\u3092\u300c\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u300d\u3068\u3057\u3066\u6a5f\u80fd\u3055\u305b\u308b\u305f\u3081\u306e”\u8d77\u52d5\u30b9\u30a4\u30c3\u30c1”<\/strong>\u3068\u8003\u3048\u308b\u3068\u5206\u304b\u308a\u3084\u3059\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n
SUM()<\/code>\u3084AVG()<\/code>\u3001RANK()<\/code>\u3068\u3044\u3063\u305f\u95a2\u6570\u306f\u3001\u305d\u308c\u5358\u4f53\u3067\u306f\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u3068\u3057\u3066\u52d5\u4f5c\u3057\u307e\u305b\u3093\u3002\u5f8c\u308d\u306bOVER()<\/code>\u304c\u7d9a\u304f\u3053\u3068\u3067\u521d\u3081\u3066\u3001\u300c\u5143\u306e\u884c\u3092\u6d88\u3055\u305a\u306b\u8ffd\u52a0\u5217\u3068\u3057\u3066\u8a08\u7b97\u7d50\u679c\u3092\u8fd4\u3059\u300d\u3068\u3044\u3046\u7279\u6b8a\u306a\u632f\u308b\u821e\u3044\u3092\u59cb\u3081\u307e\u3059\u3002<\/p>\n
\u305d\u3057\u3066\u3001\u672c\u5f53\u306b\u91cd\u8981\u306a\u306e\u306fOVER()<\/code>\u306e\u30ab\u30c3\u30b3\u306e\u4e2d\u306b\u4f55\u3092\u66f8\u304f\u304b\u3067\u3059\u3002\u3053\u306e\u30ab\u30c3\u30b3\u306e\u4e2d\u306b\u8a18\u8ff0\u3059\u308b\u5185\u5bb9\u3092\u300c\u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9<\/strong>\u300d\u3068\u547c\u3073\u3001\u300c\u3069\u306e\u7bc4\u56f2\u3067\u300d\u300c\u3069\u306e\u9806\u5e8f\u3067\u300d\u8a08\u7b97\u3059\u308b\u304b<\/strong>\u3092SQL\u30a8\u30f3\u30b8\u30f3\u306b\u7d30\u304b\u304f\u6307\u793a\u3057\u307e\u3059\u3002<\/p>\n
OVER()<\/code>\u306e\u4e2d\u306b\u66f8\u3051\u308b\u4e3b\u306a\u8981\u7d20\u306f\u4ee5\u4e0b\u306e3\u3064\u3067\u3059\u3002<\/p>\n
    \n
  • PARTITION BY <\u5217\u540d><\/code><\/strong>
    \n\u8a08\u7b97\u5bfe\u8c61\u306e\u884c\u30bb\u30c3\u30c8\u3092\u3001\u6307\u5b9a\u3057\u305f\u5217\u306e\u5024\u306b\u57fa\u3065\u3044\u3066\u30b0\u30eb\u30fc\u30d7\u5206\u3051\uff08\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u5206\u5272\uff09\u3057\u307e\u3059\u3002GROUP BY<\/code>\u306e\u30b0\u30eb\u30fc\u30d7\u5316\u3068\u4f3c\u3066\u3044\u307e\u3059\u304c\u3001\u884c\u3092\u96c6\u7d04\u3057\u306a\u3044\u70b9\u304c\u7570\u306a\u308a\u307e\u3059\u3002\u300c\u3069\u3053\u3067\u533a\u5207\u308b\u304b\uff08\u4ed5\u5207\u308a\uff09<\/strong>\u300d\u3092\u6307\u5b9a\u3059\u308b\u5f79\u5272\u3067\u3059\u3002<\/li>\n
  • ORDER BY <\u5217\u540d><\/code><\/strong>
    \nPARTITION BY<\/code>\u3067\u533a\u5207\u3089\u308c\u305f\u30b0\u30eb\u30fc\u30d7\u306e\u4e2d\u3067\u3001\u3055\u3089\u306b\u3069\u306e\u5217\u3092\u57fa\u6e96\u306b\u30ec\u30b3\u30fc\u30c9\u3092\u4e26\u3079\u308b\u304b\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u300c\u5148\u982d\u304b\u3089\u73fe\u5728\u884c\u307e\u3067\u300d\u3068\u3044\u3063\u305f\u9806\u5e8f\u306e\u6982\u5ff5\u304c\u751f\u307e\u308c\u3001\u7d2f\u8a08\u8a08\u7b97\u3084\u9806\u4f4d\u4ed8\u3051\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u300c\u3069\u306e\u9806\u756a\u3067\u8a08\u7b97\u3059\u308b\u304b\uff08\u9806\u5e8f\uff09<\/strong>\u300d\u3092\u6307\u5b9a\u3059\u308b\u5f79\u5272\u3067\u3059\u3002<\/li>\n
  • ROWS<\/code> \/ RANGE<\/code> \/ GROUPS<\/code>\u53e5<\/strong>
    \nORDER BY<\/code>\u3067\u4e26\u3079\u305f\u5f8c\u3001\u3055\u3089\u306b\u8a08\u7b97\u5bfe\u8c61\u3068\u3059\u308b\u7bc4\u56f2\u3092\u300c\u73fe\u5728\u884c\u304b\u3089N\u884c\u524d\u307e\u3067\u300d\u306e\u3088\u3046\u306b\u3001\u3088\u308a\u52d5\u7684\u306b\u7d5e\u308a\u8fbc\u3080\u305f\u3081\u306e\u6307\u5b9a\u3067\u3059\u3002\u3053\u308c\u306f\u300c\u30d5\u30ec\u30fc\u30e0\u53e5<\/strong>\u300d\u3068\u547c\u3070\u308c\u3001\u79fb\u52d5\u5e73\u5747\u306e\u8a08\u7b97\u306a\u3069\u3067\u4f7f\u308f\u308c\u307e\u3059\u3002\u300c\u3069\u3053\u304b\u3089\u3069\u3053\u307e\u3067\u3092\u5bfe\u8c61\u306b\u3059\u308b\u304b\uff08\u7bc4\u56f2\u306e\u7d5e\u308a\u8fbc\u307f\uff09<\/strong>\u300d\u3092\u6307\u5b9a\u3059\u308b\u9ad8\u5ea6\u306a\u5f79\u5272\u3067\u3059\u3002<\/li>\n<\/ul>\n
    SQL\u5177\u4f53\u4f8b\u3067\u5b66\u3076OVER\u53e5\u306e\u4f7f\u3044\u65b9<\/h3>\n
    \u8a00\u8449\u3060\u3051\u3067\u306f\u5206\u304b\u308a\u306b\u304f\u3044\u306e\u3067\u3001\u5177\u4f53\u7684\u306aSQL\u3067\u4f7f\u3044\u65b9\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n
    \u4f8b1\uff1a\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306e\u5e73\u5747\u5024\u3092\u6c42\u3081\u308b\uff08PARTITION BY<\/code>\uff09<\/h4>\n
    \u5404\u5f93\u696d\u54e1\u306e\u7d66\u4e0e\u3068\u3001\u305d\u306e\u4eba\u304c\u6240\u5c5e\u3059\u308b\u300c\u90e8\u7f72\u306e\u5e73\u5747\u7d66\u4e0e\u300d\u3092\u4e26\u3079\u3066\u8868\u793a\u3059\u308b\u30b1\u30fc\u30b9\u3067\u3059\u3002<\/p>\n
    SELECT\n  employee_name,\n  department,\n  salary,\n  -- \u90e8\u7f72\u3054\u3068\u306b\u533a\u5207\u3063\u3066\uff08PARTITION BY\uff09\u3001\u7d66\u4e0e\u306e\u5e73\u5747\u3092\u8a08\u7b97\n  AVG(salary) OVER (PARTITION BY department) AS department_avg_salary\nFROM\n  employees;\n<\/code><\/pre>\n
    \u7d50\u679c<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n
    employee_name<\/th>\ndepartment<\/th>\nsalary<\/th>\ndepartment_avg_salary<\/th>\n<\/tr>\n<\/thead>\n
    \u4f50\u85e4<\/td>\n\u55b6\u696d\u90e8<\/td>\n500<\/td>\n550<\/td>\n<\/tr>\n
    \u9234\u6728<\/td>\n\u55b6\u696d\u90e8<\/td>\n600<\/td>\n550<\/td>\n<\/tr>\n
    \u9ad8\u6a4b<\/td>\n\u958b\u767a\u90e8<\/td>\n550<\/td>\n633.3…<\/td>\n<\/tr>\n
    \u7530\u4e2d<\/td>\n\u958b\u767a\u90e8<\/td>\n700<\/td>\n633.3…<\/td>\n<\/tr>\n
    \u4f0a\u85e4<\/td>\n\u958b\u767a\u90e8<\/td>\n650<\/td>\n633.3…<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
    \u4f8b2\uff1a\u65e5\u4ed8\u9806\u306e\u7d2f\u8a08\u58f2\u4e0a\u3092\u6c42\u3081\u308b\uff08PARTITION BY<\/code> + ORDER BY<\/code>\uff09<\/h4>\n
    \u65e5\u3005\u306e\u58f2\u4e0a\u8a18\u9332sales<\/code>\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u3001\u65e5\u3054\u3068\u306e\u7d2f\u8a08\u58f2\u4e0a\u3092\u8a08\u7b97\u3059\u308b\u30b1\u30fc\u30b9\u3067\u3059\u3002<\/p>\n
    -- sales \u30c6\u30fc\u30d6\u30eb\n-- sale_date | amount\n-- 2023-04-01  | 100\n-- 2023-04-02  | 150\n-- 2023-04-03  | 120\n\nSELECT\n  sale_date,\n  amount,\n  -- \u65e5\u4ed8\u9806\u306b\u4e26\u3079\u3066\uff08ORDER BY\uff09\u3001\u73fe\u5728\u884c\u307e\u3067\u306e\u58f2\u4e0a\u3092\u5408\u8a08\n  SUM(amount) OVER (ORDER BY sale_date) AS cumulative_amount\nFROM\n  sales;\n<\/code><\/pre>\n
    \u7d50\u679c<\/strong><\/p>\n\n\n\n\n\n\n\n
    sale_date<\/th>\namount<\/th>\ncumulative_amount<\/th>\n<\/tr>\n<\/thead>\n
    2023-04-01<\/td>\n100<\/td>\n100<\/td>\n<\/tr>\n
    2023-04-02<\/td>\n150<\/td>\n250<\/td>\n<\/tr>\n
    2023-04-03<\/td>\n120<\/td>\n370<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
    \u4f8b3\uff1a\u904e\u53bb3\u65e5\u9593\u306e\u79fb\u52d5\u5e73\u5747\u3092\u6c42\u3081\u308b\uff08ORDER BY<\/code> + ROWS<\/code>\u53e5\uff09<\/h4>\n
    ORDER BY<\/code>\u3068\u30d5\u30ec\u30fc\u30e0\u53e5\u3092\u4f7f\u3044\u3001\u3088\u308a\u8907\u96d1\u306a\u300c\u5f53\u65e5\u3092\u542b\u3080\u904e\u53bb3\u65e5\u9593\u306e\u58f2\u4e0a\u79fb\u52d5\u5e73\u5747\u300d\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002<\/p>\n
    SELECT\n  sale_date,\n  amount,\n  -- \u65e5\u4ed8\u9806\u306b\u4e26\u3079\u3001\u73fe\u5728\u884c\u3068\u9061\u3063\u30662\u884c\u524d\u307e\u3067\u306e\u7bc4\u56f2\u3067\u5e73\u5747\u3092\u8a08\u7b97\n  AVG(amount) OVER (ORDER BY sale_date ROWS BETWEEN 2 PRECEDING AND CURRENT ROW) AS moving_avg_3days\nFROM\n  sales;\n<\/code><\/pre>\n
    \u7d50\u679c<\/strong><\/p>\n\n\n\n\n\n\n\n
    sale_date<\/th>\namount<\/th>\nmoving_avg_3days<\/th>\n<\/tr>\n<\/thead>\n
    2023-04-01<\/td>\n100<\/td>\n100<\/td>\n<\/tr>\n
    2023-04-02<\/td>\n150<\/td>\n125<\/td>\n<\/tr>\n
    2023-04-03<\/td>\n120<\/td>\n123.3…<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
    \u3053\u306e\u3088\u3046\u306b\u3001OVER()<\/code>\u306e\u4e2d\u8eab\u3092\u4f7f\u3044\u5206\u3051\u308b\u3053\u3068\u3067\u3001\u5358\u7d14\u306a\u96c6\u8a08\u304b\u3089\u7d2f\u8a08\u3001\u79fb\u52d5\u5e73\u5747\u307e\u3067\u3001\u591a\u5f69\u306a\u5206\u6790\u304cSQL\u3060\u3051\u3067\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
    \u7d50\u8ad6\u304b\u3089\u8a00\u3046\u3068\uff1a<\/p>\n
    OVER(PARTITION BY \uff5e ORDER BY \uff5e)<\/code> \u306f\u3001
    \u300c\u307e\u305a\u30b0\u30eb\u30fc\u30d7\u3092\u533a\u5207\u308a\uff08PARTITION BY\uff09\u3001
    \u305d\u306e\u4e2d\u3067\u9806\u756a\u3092\u3064\u3051\u3066\uff08ORDER BY\uff09\u3001
    \u305d\u306e\u9806\u756a\u306b\u6cbf\u3063\u3066\u96c6\u8a08\u3059\u308b\u300d<\/strong><\/p>\n
    \u3068\u3044\u3046 \u4e8c\u6bb5\u968e\u69cb\u9020<\/strong> \u306e\u8003\u3048\u65b9\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
    🧩 OVER(PARTITION BY \uff5e ORDER BY \uff5e)\u306e\u96c6\u8a08\u306e\u6d41\u308c<\/h2>\n
    OVER(PARTITION BY \uff5e ORDER BY \uff5e)<\/code> \u306f\u3001
    \u300c\u307e\u305a\u30b0\u30eb\u30fc\u30d7\u3092\u533a\u5207\u308a\uff08PARTITION BY\uff09\u3001
    \u305d\u306e\u4e2d\u3067\u9806\u756a\u3092\u3064\u3051\u3066\uff08ORDER BY\uff09\u3001
    \u305d\u306e\u9806\u756a\u306b\u6cbf\u3063\u3066\u96c6\u8a08\u3059\u308b\u300d<\/strong><\/p>\n
    \u3068\u3044\u3046 \u4e8c\u6bb5\u968e\u69cb\u9020<\/strong> \u306e\u8003\u3048\u65b9\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
    OVER(PARTITION BY \u90e8\u7f72 ORDER BY \u7d66\u6599)<\/code>
    \u3068\u66f8\u304f\u3068\u3001\u5b9f\u969b\u306e\u51e6\u7406\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a2\u30b9\u30c6\u30c3\u30d7<\/strong>\u3067\u884c\u308f\u308c\u307e\u3059\u3002<\/p>\n
    🪜 \u30b9\u30c6\u30c3\u30d7\u2460\uff1aPARTITION BY \u3067\u201c\u30b0\u30eb\u30fc\u30d7\u201d\u3092\u4f5c\u308b<\/h3>\n
    \u307e\u305a \u30c6\u30fc\u30d6\u30eb\u5168\u4f53\u3092\u300c\u90e8\u7f72\u3054\u3068\u300d\u306b\u5206\u5272<\/strong>\u3057\u307e\u3059\u3002<\/p>\n
    \n
    \n\n\n\n\n\n\n\n\n
    \u90e8\u7f72<\/th>\n\u793e\u54e1<\/th>\n\u7d66\u6599<\/th>\n<\/tr>\n<\/thead>\n
    \u55b6\u696d<\/td>\n\u7530\u4e2d<\/td>\n400<\/td>\n<\/tr>\n
    \u55b6\u696d<\/td>\n\u4f50\u85e4<\/td>\n300<\/td>\n<\/tr>\n
    \u958b\u767a<\/td>\n\u9234\u6728<\/td>\n500<\/td>\n<\/tr>\n
    \u958b\u767a<\/td>\n\u9ad8\u6a4b<\/td>\n600<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    👉 \u90e8\u7f72 = \u55b6\u696d\u30b0\u30eb\u30fc\u30d7 \u3068 \u958b\u767a\u30b0\u30eb\u30fc\u30d7 \u306e2\u3064\u306b\u5206\u304b\u308c\u308b\u3002<\/p>\n
    🪜 \u30b9\u30c6\u30c3\u30d7\u2461\uff1a\u5404\u30b0\u30eb\u30fc\u30d7\u306e\u4e2d\u3067 ORDER BY \u3067\u4e26\u3073\u66ff\u3048\u308b<\/h3>\n
    \u6b21\u306b\u3001\u5404\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306b\u6307\u5b9a\u3057\u305f\u5217\uff08\u3053\u3053\u3067\u306f\u7d66\u6599\uff09\u3067\u4e26\u3073\u9806\u3092\u3064\u3051\u308b<\/strong>\u3002<\/p>\n
    \n
    \n\n\n\n\n\n\n\n\n
    \u90e8\u7f72<\/th>\n\u793e\u54e1<\/th>\n\u7d66\u6599<\/th>\n\u4e26\u3073\u9806<\/th>\n<\/tr>\n<\/thead>\n
    \u55b6\u696d<\/td>\n\u4f50\u85e4<\/td>\n300<\/td>\n1\u4f4d<\/td>\n<\/tr>\n
    \u55b6\u696d<\/td>\n\u7530\u4e2d<\/td>\n400<\/td>\n2\u4f4d<\/td>\n<\/tr>\n
    \u958b\u767a<\/td>\n\u9234\u6728<\/td>\n500<\/td>\n1\u4f4d<\/td>\n<\/tr>\n
    \u958b\u767a<\/td>\n\u9ad8\u6a4b<\/td>\n600<\/td>\n2\u4f4d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    🪜 \u30b9\u30c6\u30c3\u30d7\u2462\uff1a\u305d\u306e\u9806\u756a\u306b\u6cbf\u3063\u3066\u96c6\u8a08\u30fb\u9806\u4f4d\u4ed8\u3051<\/h3>\n
    \u4f8b\u3048\u3070\uff1a<\/p>\n
    \n
    SUM<\/span>(\u7d66\u6599) OVER<\/span>(PARTITION<\/span> BY<\/span> \u90e8\u7f72 ORDER<\/span> BY<\/span> \u7d66\u6599)
    \n<\/code><\/div>\n<\/div>\n
    \u3060\u3068\u3001\u300c\u90e8\u7f72\u3054\u3068\u300d\u306b\u300c\u7d66\u6599\u306e\u6607\u9806\u300d\u3067\u7d2f\u8a08\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002<\/p>\n
    \n
    \n\n\n\n\n\n\n\n\n
    \u90e8\u7f72<\/th>\n\u793e\u54e1<\/th>\n\u7d66\u6599<\/th>\n\u90e8\u7f72\u5185\u7d2f\u8a08<\/th>\n<\/tr>\n<\/thead>\n
    \u55b6\u696d<\/td>\n\u4f50\u85e4<\/td>\n300<\/td>\n300<\/td>\n<\/tr>\n
    \u55b6\u696d<\/td>\n\u7530\u4e2d<\/td>\n400<\/td>\n700<\/td>\n<\/tr>\n
    \u958b\u767a<\/td>\n\u9234\u6728<\/td>\n500<\/td>\n500<\/td>\n<\/tr>\n
    \u958b\u767a<\/td>\n\u9ad8\u6a4b<\/td>\n600<\/td>\n1100<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    \u2192 \u90e8\u7f72\u3054\u3068\u306e\u7d2f\u8a08\uff08running total within partition\uff09<\/strong>
    \u304c\u51fa\u305b\u308b\u3001\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\n
    PARTITION BY \u304c\u300c\u30b0\u30eb\u30fc\u30d7\u5316\u300d\u2192 ORDER BY \u304c\u300c\u9806\u756a\u4ed8\u3051\u300d<\/h3>\n
    \n
    \n\n\n\n\n\n\n
    \u53e5<\/th>\n\u51e6\u7406\u306e\u5358\u4f4d<\/th>\n\u5f79\u5272<\/th>\n<\/tr>\n<\/thead>\n
    PARTITION BY<\/code><\/td>\n\u30b0\u30eb\u30fc\u30d7\u306e\u5358\u4f4d\u3092\u6c7a\u3081\u308b<\/td>\n\u300c\u3069\u3053\u307e\u3067\u304c\u4e00\u3064\u306e\u307e\u3068\u307e\u308a\u304b\u300d<\/td>\n<\/tr>\n
    ORDER BY<\/code><\/td>\n\u5404\u30b0\u30eb\u30fc\u30d7\u5185\u306e\u9806\u756a<\/td>\n\u300c\u3069\u3046\u4e26\u3079\u3066\u96c6\u8a08\u3092\u9032\u3081\u308b\u304b\u300d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    \u3064\u307e\u308a\uff1a<\/p>\n
    \u300cGROUP BY \u306e\u3088\u3046\u306b\u533a\u5207\u308a\uff08PARTITION\uff09\u3092\u4f5c\u308a\u3001
    \u305d\u306e\u4e2d\u3067 ORDER BY \u306b\u6cbf\u3063\u3066\u30a6\u30a3\u30f3\u30c9\u30a6\u3092\u52d5\u304b\u3059\u300d<\/strong><\/p>\n
    💡 3. \u95a2\u6570\u306b\u3088\u3063\u3066\u5f79\u5272\u304c\u5c11\u3057\u5909\u308f\u308b<\/h3>\n
    \n
    \n\n\n\n\n\n\n\n
    \u95a2\u6570<\/th>\nPARTITION BY<\/code> \u306e\u5f71\u97ff<\/th>\nORDER BY<\/code> \u306e\u5f71\u97ff<\/th>\n<\/tr>\n<\/thead>\n
    SUM()<\/code> \/ AVG()<\/code><\/td>\n\u30b0\u30eb\u30fc\u30d7\u3092\u72ec\u7acb\u3057\u3066\u96c6\u8a08<\/td>\n\u4e26\u3073\u9806\u306b\u5fdc\u3058\u3066\u7d2f\u8a08\u30fb\u79fb\u52d5\u5e73\u5747\u306a\u3069<\/td>\n<\/tr>\n
    RANK()<\/code> \/ ROW_NUMBER()<\/code><\/td>\n\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306b\u9806\u4f4d\u3092\u30ea\u30bb\u30c3\u30c8<\/td>\n\u4e26\u3073\u9806\u306e\u57fa\u6e96\u3092\u6c7a\u5b9a<\/td>\n<\/tr>\n
    LAG()<\/code> \/ LEAD()<\/code><\/td>\n\u30b0\u30eb\u30fc\u30d7\u3092\u307e\u305f\u304c\u306a\u3044<\/td>\n\u524d\u5f8c\u95a2\u4fc2\u3092\u5b9a\u7fa9\uff08\u6642\u9593\u9806\u306a\u3069\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    🧠 4. \u76f4\u611f\u30a4\u30e1\u30fc\u30b8<\/h3>\n
      \n
    • \n
      PARTITION BY<\/code> \u306f\u300c\u30af\u30e9\u30b9\u5206\u3051<\/strong>\u300d<\/p>\n<\/li>\n
    • \n
      ORDER BY<\/code> \u306f\u300c\u5e2d\u9806\u3092\u6c7a\u3081\u308b<\/strong>\u300d<\/p>\n<\/li>\n
    • \n
      \u96c6\u8a08\u95a2\u6570\u306f\u300c\u305d\u306e\u9806\u756a\u3067\u8db3\u3057\u4e0a\u3052\u308b\uff0f\u5e73\u5747\u3059\u308b<\/strong>\u300d<\/p>\n<\/li>\n<\/ul>\n
      🎓 \u3064\u307e\u308a\u3001<\/p>\n
      \u300c\u90e8\u7f72\uff08\u30af\u30e9\u30b9\uff09\u300d\u3054\u3068\u306b\u3001\u300c\u7d66\u6599\uff08\u5e2d\u9806\uff09\u300d\u3067\u4e26\u3079\u3066\u3001<\/strong>
      \u4e0a\u304b\u3089\u9806\u306b\u7d2f\u8a08\u3092\u51fa\u3059\u3002<\/strong><\/p>\n
      🧩 1. \u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u306e3\u30bf\u30a4\u30d7\u5206\u985e<\/h2>\n
      \u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u306f\u5927\u304d\u304f\u5206\u3051\u308b\u30683\u7cfb\u7d71\u306b\u5206\u985e\u3055\u308c\u307e\u3059\u3002<\/p>\n
      \n
      \n\n\n\n\n\n\n\n
      \u5206\u985e<\/th>\n\u4e3b\u306a\u95a2\u6570<\/th>\n\u51e6\u7406\u306e\u7279\u5fb4<\/th>\n<\/tr>\n<\/thead>\n
      \u2460 \u96c6\u8a08\u7cfb\uff08\u7d2f\u8a08\u30fb\u5e73\u5747\uff09<\/td>\nSUM<\/code>, AVG<\/code>, COUNT<\/code>, MAX<\/code>, MIN<\/code><\/td>\n\u904e\u53bb\u304b\u3089\u73fe\u5728\u884c\u307e\u3067\u3092\u307e\u3068\u3081\u3066\u96c6\u8a08\u3059\u308b<\/td>\n<\/tr>\n
      \u2461 \u9806\u4f4d\u7cfb\uff08\u30e9\u30f3\u30ad\u30f3\u30b0\uff09<\/td>\nRANK<\/code>, DENSE_RANK<\/code>, ROW_NUMBER<\/code>, NTILE<\/code><\/td>\n\u4e26\u3073\u9806\u3092\u57fa\u6e96\u306b\u9806\u4f4d\u3084\u884c\u756a\u53f7\u3092\u4ed8\u3051\u308b<\/td>\n<\/tr>\n
      \u2462 \u53c2\u7167\u7cfb\uff08\u524d\u5f8c\u6bd4\u8f03\uff09<\/td>\nLAG<\/code>, LEAD<\/code>, FIRST_VALUE<\/code>, LAST_VALUE<\/code><\/td>\n\u6307\u5b9a\u3057\u305f\u7bc4\u56f2\u306e\u4ed6\u884c\u306e\u5024\u3092\u53c2\u7167\u3059\u308b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
      \u3053\u308c\u30893\u30bf\u30a4\u30d7\u3067\u3001PARTITION BY<\/code> \u3068 ORDER BY<\/code> \u306e\u610f\u5473\u304c\u5c11\u3057\u305a\u3064\u9055\u3046<\/strong>\u306e\u3067\u3059\u3002<\/p>\n
      \n
      🧠 2. \u2460 \u96c6\u8a08\u7cfb\u95a2\u6570\uff08SUM, AVG\u306a\u3069\uff09<\/h3>\n
      \u69cb\u6587\u4f8b<\/strong><\/p>\n
      \n
      SUM<\/span>(\u58f2\u4e0a) OVER<\/span>(PARTITION<\/span> BY<\/span> \u5e97\u8217 ORDER<\/span> BY<\/span> \u65e5\u4ed8)
      \n<\/code><\/div>\n<\/div>\n
      \u52d5\u4f5c\u306e\u6d41\u308c<\/strong><\/p>\n
        \n
      1. \n
        PARTITION BY<\/code>\uff1a\u5e97\u8217\u3054\u3068\u306b\u72ec\u7acb\u3057\u305f\u30b0\u30eb\u30fc\u30d7\u3092\u4f5c\u308b<\/p>\n<\/li>\n
      2. \n
        ORDER BY<\/code>\uff1a\u65e5\u4ed8\u9806\u306b\u4e26\u3079\u308b<\/p>\n<\/li>\n
      3. \n
        SUM()<\/code>\uff1a\u4e26\u3073\u9806\u306b\u5f93\u3063\u3066\u5148\u982d\u304b\u3089\u73fe\u5728\u884c\u307e\u3067\u7d2f\u8a08<\/strong><\/p>\n<\/li>\n<\/ol>\n
        \n
        \n\n\n\n\n\n\n\n\n\n
        \u5e97\u8217<\/th>\n\u65e5\u4ed8<\/th>\n\u58f2\u4e0a<\/th>\n\u7d2f\u8a08\u58f2\u4e0a<\/th>\n<\/tr>\n<\/thead>\n
        A<\/td>\n1\u65e5<\/td>\n100<\/td>\n100<\/td>\n<\/tr>\n
        A<\/td>\n2\u65e5<\/td>\n200<\/td>\n300<\/td>\n<\/tr>\n
        A<\/td>\n3\u65e5<\/td>\n150<\/td>\n450<\/td>\n<\/tr>\n
        B<\/td>\n1\u65e5<\/td>\n50<\/td>\n50<\/td>\n<\/tr>\n
        B<\/td>\n2\u65e5<\/td>\n100<\/td>\n150<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
        ➡️ **\u300c\u30b0\u30eb\u30fc\u30d7\u5185\u7d2f\u8a08\u300d\u3084\u300c\u79fb\u52d5\u5e73\u5747\u300d**\u306a\u3069\u304c\u5f97\u3089\u308c\u307e\u3059\u3002
        PARTITION BY<\/code> \u304c\u30b0\u30eb\u30fc\u30d7\u3092\u5206\u3051\u3001ORDER BY<\/code> \u304c\u6642\u9593\uff08\u9806\u5e8f\uff09\u3092\u4e0e\u3048\u308b\u3002<\/p>\n
        🧮 3. \u2461 \u9806\u4f4d\u7cfb\u95a2\u6570\uff08RANK, ROW_NUMBER\u306a\u3069\uff09<\/h3>\n
        \u69cb\u6587\u4f8b<\/strong><\/p>\n
        \n
        RANK<\/span>() OVER<\/span>(PARTITION<\/span> BY<\/span> \u90e8\u7f72 ORDER<\/span> BY<\/span> \u7d66\u6599 DESC<\/span>)
        \n<\/code><\/div>\n<\/div>\n
        \u52d5\u4f5c\u306e\u6d41\u308c<\/strong><\/p>\n
          \n
        1. \n
          PARTITION BY<\/code>\uff1a\u90e8\u7f72\u3054\u3068\u306b\u9806\u4f4d\u30ea\u30bb\u30c3\u30c8<\/p>\n<\/li>\n
        2. \n
          ORDER BY<\/code>\uff1a\u4e26\u3073\u9806\uff08\u7d66\u6599\u306e\u9ad8\u3044\u9806\uff09\u3092\u5b9a\u7fa9<\/p>\n<\/li>\n
        3. \n
          RANK()<\/code>\uff1a\u305d\u306e\u9806\u756a\u306b\u9806\u4f4d\u3092\u4ed8\u3051\u308b<\/p>\n<\/li>\n<\/ol>\n
          \n
          \n\n\n\n\n\n\n\n\n
          \u90e8\u7f72<\/th>\n\u793e\u54e1<\/th>\n\u7d66\u6599<\/th>\n\u9806\u4f4d<\/th>\n<\/tr>\n<\/thead>\n
          \u55b6\u696d<\/td>\n\u7530\u4e2d<\/td>\n500<\/td>\n1<\/td>\n<\/tr>\n
          \u55b6\u696d<\/td>\n\u4f50\u85e4<\/td>\n400<\/td>\n2<\/td>\n<\/tr>\n
          \u958b\u767a<\/td>\n\u9234\u6728<\/td>\n700<\/td>\n1<\/td>\n<\/tr>\n
          \u958b\u767a<\/td>\n\u9ad8\u6a4b<\/td>\n600<\/td>\n2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
          ➡️ PARTITION BY<\/code> \u304c\u30ea\u30bb\u30c3\u30c8\u5358\u4f4d\uff08\u90e8\u7f72\u3054\u3068\u306b1\u4f4d\u304b\u3089\u6570\u3048\u76f4\u3059\uff09<\/strong>
          ORDER BY<\/code> \u304c\u9806\u4f4d\u306e\u57fa\u6e96\u5217\uff08\u964d\u9806\u306a\u3089\u9ad8\u3044\u9806\u306b1\u4f4d\uff09<\/strong><\/p>\n
          <\/i>\u30e1\u30e2<\/p>
          \n
            \n
          • \n
            RANK()<\/code>\uff1a\u540c\u5024\u306b\u540c\u9806\u4f4d\u3092\u3064\u3051\u308b\uff08\u6b21\u306e\u9806\u4f4d\u304c\u98db\u3076\uff09<\/p>\n<\/li>\n
          • \n
            DENSE_RANK()<\/code>\uff1a\u540c\u5024\u3082\u9023\u756a\u3067\u7d9a\u304f<\/p>\n<\/li>\n
          • \n
            ROW_NUMBER()<\/code>\uff1a\u9806\u4f4d\u3067\u306f\u306a\u304f\u5358\u7d14\u306a\u9023\u756a\uff08\u5e38\u306b1,2,3…\uff09<\/p>\n<\/li>\n<\/ul>\n
            <\/div><\/div><\/code><\/p>\n
            \n
            \n\n\n\n\n\n\n\n
            \u95a2\u6570<\/th>\n2\u4f4d\u304c\u91cd\u8907\u3057\u305f\u3068\u304d<\/th>\n\u7d50\u679c\u4f8b<\/th>\n<\/tr>\n<\/thead>\n
            RANK()<\/td>\n\u6b21\u304c\u98db\u3076<\/td>\n1, 2, 2, 4<\/td>\n<\/tr>\n
            DENSE_RANK()<\/td>\n\u98db\u3070\u3055\u306a\u3044<\/td>\n1, 2, 2, 3<\/td>\n<\/tr>\n
            ROW_NUMBER()<\/td>\n\u5e38\u306b\u9023\u756a<\/td>\n1, 2, 3, 4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
            🔁 4. \u2462 \u53c2\u7167\u7cfb\u95a2\u6570\uff08LAG, LEAD, FIRST_VALUE\u306a\u3069\uff09<\/h3>\n
            \u69cb\u6587\u4f8b<\/strong><\/p>\n
            \n
            LAG<\/span>(\u58f2\u4e0a, 1<\/span>) OVER<\/span>(PARTITION<\/span> BY<\/span> \u5e97\u8217 ORDER<\/span> BY<\/span> \u65e5\u4ed8) AS<\/span> \u524d\u65e5\u58f2\u4e0a
            \n<\/code><\/div>\n<\/div>\n
            \u52d5\u4f5c\u306e\u6d41\u308c<\/strong><\/p>\n
              \n
            1. \n
              PARTITION BY<\/code>\uff1a\u5e97\u8217\u3054\u3068\u306b\u72ec\u7acb\u3057\u305f\u7cfb\u5217\u306b\u5206\u3051\u308b<\/p>\n<\/li>\n
            2. \n
              ORDER BY<\/code>\uff1a\u65e5\u4ed8\u9806\u306b\u4e26\u3079\u3066\u6642\u9593\u306e\u6d41\u308c\u3092\u4f5c\u308b<\/p>\n<\/li>\n
            3. \n
              LAG()<\/code>\uff1a1\u884c\u524d\u306e\u5024\u3092\u53c2\u7167\uff08\u524d\u65e5\uff09<\/p>\n<\/li>\n<\/ol>\n
              \n
              \n\n\n\n\n\n\n\n
              \u5e97\u8217<\/th>\n\u65e5\u4ed8<\/th>\n\u58f2\u4e0a<\/th>\n\u524d\u65e5\u58f2\u4e0a<\/th>\n<\/tr>\n<\/thead>\n
              A<\/td>\n1\u65e5<\/td>\n100<\/td>\nNULL<\/td>\n<\/tr>\n
              A<\/td>\n2\u65e5<\/td>\n200<\/td>\n100<\/td>\n<\/tr>\n
              A<\/td>\n3\u65e5<\/td>\n150<\/td>\n200<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
              ➡️ ORDER BY<\/code> \u304c\u300c\u524d\u5f8c\u95a2\u4fc2\u300d\u3092\u5b9a\u7fa9\u3059\u308b\u8ef8<\/strong>\u3002
              PARTITION BY<\/code> \u3067\u5225\u5e97\u8217\u3092\u72ec\u7acb\u3055\u305b\u3066\u3001A\u5e97\u306e\u58f2\u4e0a\u306fB\u5e97\u3068\u6df7\u3056\u3089\u306a\u3044\u3002<\/p>\n
              🧩 5. \u305d\u308c\u305e\u308c\u306e\u95a2\u6570\u3067\u306e\u53e5\u306e\u50cd\u304d\u3092\u6bd4\u8f03<\/h4>\n
              \n
              \n\n\n\n\n\n\n\n
              \u7a2e\u985e<\/th>\n\u95a2\u6570\u4f8b<\/th>\nPARTITION BY<\/code> \u306e\u5f79\u5272<\/th>\nORDER BY<\/code> \u306e\u5f79\u5272<\/th>\n\u4e3b\u306a\u7528\u9014<\/th>\n<\/tr>\n<\/thead>\n
              \u96c6\u8a08\u7cfb<\/td>\nSUM, AVG<\/td>\n\u30b0\u30eb\u30fc\u30d7\u5358\u4f4d\u3067\u96c6\u8a08\u3092\u72ec\u7acb<\/td>\n\u4e26\u3073\u9806\u3067\u7d2f\u8a08\u3084\u79fb\u52d5\u5e73\u5747\u3092\u51fa\u3059<\/td>\n\u7d2f\u8a08\u30fb\u79fb\u52d5\u5e73\u5747<\/td>\n<\/tr>\n
              \u9806\u4f4d\u7cfb<\/td>\nRANK, ROW_NUMBER<\/td>\n\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306b\u9806\u4f4d\u3092\u30ea\u30bb\u30c3\u30c8<\/td>\n\u4e26\u3073\u9806\u3067\u9806\u4f4d\u4ed8\u3051<\/td>\n\u30e9\u30f3\u30ad\u30f3\u30b0<\/td>\n<\/tr>\n
              \u53c2\u7167\u7cfb<\/td>\nLAG, LEAD<\/td>\n\u53c2\u7167\u7cfb\u5217\u3092\u5206\u3051\u308b<\/td>\n\u524d\u5f8c\u95a2\u4fc2\u3092\u5b9a\u7fa9<\/td>\n\u524d\u56de\u5024\u30fb\u5dee\u5206\u8a08\u7b97<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
              <\/i>\u4e00\u8a00\u3067\u307e\u3068\u3081\u308b\u3068<\/p>
              \n
              PARTITION BY \u306f\u300c\u4e16\u754c\uff08\u96c6\u8a08\u30fb\u9806\u4f4d\u30fb\u7cfb\u5217\uff09\u3092\u5206\u3051\u308b\u300d\u3002<\/strong>
              ORDER BY \u306f\u300c\u305d\u306e\u4e16\u754c\u306e\u4e2d\u3067\u6642\u9593\u3084\u9806\u4f4d\u306e\u8ef8\u3092\u4f5c\u308b\u300d\u3002<\/strong><\/p>\n
              <\/div><\/div><\/p>\n
              \u96c6\u8a08\u7cfb\u3067\u306f\u300c\u7d2f\u8a08\u300d\u3001\u9806\u4f4d\u7cfb\u3067\u306f\u300c\u4e26\u3073\u9806\u300d\u3001\u53c2\u7167\u7cfb\u3067\u306f\u300c\u524d\u5f8c\u95a2\u4fc2\u300d\u3092\u305d\u308c\u305e\u308c\u5236\u5fa1\u3057\u3066\u3044\u308b\u3002<\/p>\n
              🧭 5. \u3088\u304f\u3042\u308b\u5b9f\u8df5\u30d1\u30bf\u30fc\u30f3<\/h3>\n
              \n
              \n\n\n\n\n\n\n\n
              \u7528\u9014<\/th>\n\u8a18\u8ff0\u4f8b<\/th>\n\u610f\u5473<\/th>\n<\/tr>\n<\/thead>\n
              \u90e8\u7f72\u5225\u306b\u7d66\u6599\u9806\u4f4d\u3092\u51fa\u3059<\/td>\nRANK() OVER(PARTITION BY \u90e8\u7f72 ORDER BY \u7d66\u6599 DESC)<\/code><\/td>\n\u90e8\u7f72\u3054\u3068\u306b\u9806\u4f4d\u3092\u30ea\u30bb\u30c3\u30c8\u3057\u3066\u7d66\u6599\u9806\u306b\u4e26\u3079\u308b<\/td>\n<\/tr>\n
              \u90e8\u7f72\u5225\u306b\u7d2f\u8a08\u58f2\u4e0a\u3092\u51fa\u3059<\/td>\nSUM(\u58f2\u4e0a) OVER(PARTITION BY \u90e8\u7f72 ORDER BY \u65e5\u4ed8)<\/code><\/td>\n\u90e8\u7f72\u3054\u3068\u306b\u65e5\u4ed8\u9806\u3067\u7d2f\u7a4d\u58f2\u4e0a\u3092\u51fa\u3059<\/td>\n<\/tr>\n
              \u652f\u5e97\u5225\u30fb\u65e5\u4ed8\u9806\u306b\u76f4\u8fd13\u65e5\u306e\u5e73\u5747<\/td>\nAVG(\u58f2\u4e0a) OVER(PARTITION BY \u652f\u5e97 ORDER BY \u65e5\u4ed8 ROWS BETWEEN 2 PRECEDING AND CURRENT ROW)<\/code><\/td>\n\u652f\u5e97\u3054\u3068\u306b\u76f4\u8fd13\u65e5\u306e\u79fb\u52d5\u5e73\u5747<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
              ✅ \u307e\u3068\u3081<\/h3>\n
              \n
              \n\n\n\n\n\n\n\n
              \u53e5<\/th>\n\u51e6\u7406\u30a4\u30e1\u30fc\u30b8<\/th>\n\u7d50\u679c\u306e\u7c92\u5ea6<\/th>\n<\/tr>\n<\/thead>\n
              PARTITION BY<\/code><\/td>\n\u30b0\u30eb\u30fc\u30d7\u3092\u533a\u5207\u308b\uff08\u90e8\u7f72\u30fb\u652f\u5e97\u306a\u3069\uff09<\/td>\n\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306b\u72ec\u7acb<\/td>\n<\/tr>\n
              ORDER BY<\/code><\/td>\n\u5404\u30b0\u30eb\u30fc\u30d7\u5185\u3067\u9806\u756a\u3092\u4f5c\u308b<\/td>\n\u7d2f\u8a08\u30fb\u9806\u4f4d\u306a\u3069\u300c\u9806\u5e8f\u30d9\u30fc\u30b9\u300d\u306e\u96c6\u8a08<\/td>\n<\/tr>\n
              \u4e21\u65b9\u4f7f\u3046<\/td>\n\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306b\u9806\u756a\u3092\u4ed8\u3051\u3066\u96c6\u8a08<\/td>\n\u5178\u578b\u7684\u306a\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u69cb\u6587\uff08\u6700\u3082\u591a\u3044\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
              <\/i>\u4e00\u8a00\u3067\u3044\u3046\u3068<\/p>
              \n
              PARTITION BY<\/code> \u3067\u300c\u3069\u3053\u307e\u3067\u304c\u4e00\u3064\u306e\u4e16\u754c\u304b\u300d\u3092\u6c7a\u3081\u3001
              \u305d\u306e\u4e16\u754c\u306e\u4e2d\u3067 ORDER BY<\/code> \u306b\u6cbf\u3063\u3066\u300c\u6642\u9593\uff08\u9806\u5e8f\uff09\u300d\u3092\u9032\u3081\u306a\u304c\u3089\u8a08\u7b97\u3059\u308b\u3002<\/strong><\/p>\n<\/div><\/div>\n
              SQL\u306e\u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9\u3068\u306f\uff1fOVER\u53e5\u306e\u4e2d\u8eab\u30923\u3064\u306e\u8981\u7d20\u306b\u5206\u89e3<\/h2>\n
              \u524d\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u3001OVER()<\/code>\u306e\u30ab\u30c3\u30b3\u306e\u4e2d\u306b\u66f8\u304f\u5185\u5bb9\u304c\u91cd\u8981\u3060\u3068\u89e3\u8aac\u3057\u307e\u3057\u305f\u3002\u3053\u306eOVER()<\/code>\u306e\u4e2d\u306b\u8a18\u8ff0\u3059\u308bPARTITION BY<\/code>\u3084ORDER BY<\/code>\u306a\u3069\u306e\u30b3\u30fc\u30c9\u5168\u4f53\u3092\u300c\u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9 (Window Definition)<\/strong>\u300d\u3068\u547c\u3073\u307e\u3059\u3002<\/p>\n
              \u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9\u306e\u5f79\u5272\u306f\u3001\u8a08\u7b97\u5bfe\u8c61\u3068\u306a\u308b\u884c\u306e\u7bc4\u56f2\uff08\uff1d\u30a6\u30a3\u30f3\u30c9\u30a6\uff09\u3092\u6b63\u78ba\u306b\u6307\u5b9a\u3059\u308b\u305f\u3081\u306e\u300c\u8a2d\u8a08\u56f3\u300d<\/strong>\u3067\u3059\u3002\u3053\u306e\u8a2d\u8a08\u56f3\u3092SQL\u30a8\u30f3\u30b8\u30f3\u306b\u6e21\u3059\u3053\u3068\u3067\u3001\u79c1\u305f\u3061\u306f\u67d4\u8edf\u306a\u96c6\u8a08\u3084\u5206\u6790\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
              \u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u306f\u3001\u3053\u306e\u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9\u306fSELECT<\/code>\u53e5\u306e\u4e2d\u3067\u3001SUM()<\/code>\u3084RANK()<\/code>\u3068\u3044\u3063\u305f\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u306e\u76f4\u5f8c\u306bOVER()<\/code>\u3068\u3057\u3066\u8a18\u8ff0\u3055\u308c\u308b\u3001\u3068\u3044\u3046\u69cb\u6587\u4e0a\u306e\u4f4d\u7f6e<\/strong>\u3067\u3059\u3002<\/p>\n
              \u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9\u3092\u69cb\u6210\u3059\u308b3\u3064\u306e\u53e5<\/h3>\n
              \u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9\u3001\u3064\u307e\u308aOVER()<\/code>\u306e\u30ab\u30c3\u30b3\u306e\u4e2d\u8eab\u306f\u3001\u4e3b\u306b\u4ee5\u4e0b\u306e3\u3064\u306e\u69cb\u6210\u8981\u7d20\uff08\u53e5\uff09\u304b\u3089\u6210\u308a\u7acb\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u8a08\u7b97\u7bc4\u56f2\u3092\u81ea\u7531\u306b\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n\n\n\n\n
              \u69cb\u6210\u8981\u7d20<\/th>\n\u5f79\u5272<\/th>\n\u4e3b\u8981\u306a\u30ad\u30fc\u30ef\u30fc\u30c9<\/th>\n<\/tr>\n<\/thead>\n
              \u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u53e5<\/strong><\/td>\n\u30c7\u30fc\u30bf\u3092\u30b0\u30eb\u30fc\u30d7\u306b\u5206\u5272<\/strong>\u3059\u308b\uff08\u4ed5\u5207\u308a\uff09<\/td>\nPARTITION BY<\/code><\/td>\n<\/tr>\n
              ORDER BY\u53e5<\/strong><\/td>\n\u30b0\u30eb\u30fc\u30d7\u5185\u306e\u30c7\u30fc\u30bf\u306e\u9806\u5e8f<\/strong>\u3092\u6c7a\u3081\u308b\uff08\u6574\u5217\uff09<\/td>\nORDER BY<\/code><\/td>\n<\/tr>\n
              \u30d5\u30ec\u30fc\u30e0\u53e5<\/strong><\/td>\n\u9806\u5e8f\u4ed8\u3051\u3055\u308c\u305f\u30c7\u30fc\u30bf\u5185\u306e\u7bc4\u56f2<\/strong>\u3092\u3055\u3089\u306b\u7d5e\u308a\u8fbc\u3080<\/td>\nROWS<\/code>, RANGE<\/code>, GROUPS<\/code>
              \nBETWEEN ... AND ...<\/code>
              \nPRECEDING<\/code> (\u524d)
              \nFOLLOWING<\/code> (\u5f8c)
              \nCURRENT ROW<\/code> (\u73fe\u5728\u884c)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
              PARTITION BY<\/code>\u3067\u5927\u304d\u306a\u30b0\u30eb\u30fc\u30d7\u3092\u4f5c\u308a\u3001ORDER BY<\/code>\u3067\u305d\u306e\u4e2d\u306e\u9806\u756a\u3092\u6c7a\u3081\u3001ROWS<\/code>\u53e5\uff08\u30d5\u30ec\u30fc\u30e0\u53e5\uff09\u3067\u3055\u3089\u306b\u300c\u81ea\u5206\u304b\u3089\u898b\u3066\u4f55\u884c\u524d\u307e\u3067\u300d\u3068\u3044\u3063\u305f\u5fae\u8abf\u6574\u3092\u884c\u3046\u30a4\u30e1\u30fc\u30b8\u3067\u3059\u3002<\/p>\n
              \u30d5\u30eb\u69cb\u6587\u3067\u8aad\u307f\u89e3\u304f\u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9<\/h3>\n
              \u3067\u306f\u3001\u3053\u308c\u30893\u3064\u306e\u8981\u7d20\u3092\u3059\u3079\u3066\u4f7f\u3063\u305f\u8907\u96d1\u306a\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u4e00\u898b\u96e3\u3057\u304f\u898b\u3048\u307e\u3059\u304c\u3001\u4e00\u3064\u305a\u3064\u5206\u89e3\u3059\u308c\u3070\u610f\u5473\u3092\u7406\u89e3\u3067\u304d\u307e\u3059\u3002<\/p>\n
              \u30b7\u30ca\u30ea\u30aa<\/strong>: \u5404\u5f93\u696d\u54e1\u306b\u3064\u3044\u3066\u300c\u540c\u3058\u90e8\u7f72\u5185\u3067\u3001\u5165\u793e\u65e5\u304c\u81ea\u5206\u3068\u8fd1\u3044\u524d\u5f8c1\u540d\u305a\u3064\uff08\u5408\u8a083\u540d\uff09\u306e\u5e73\u5747\u7d66\u4e0e\u300d\u3092\u8a08\u7b97\u3057\u305f\u3044\u3002<\/p>\n
              SELECT\n  employee_name,\n  department,\n  hire_date,\n  salary,\n  AVG(salary) OVER (\n    PARTITION BY department       -- \u2460 \u90e8\u7f72\u3067\u30b0\u30eb\u30fc\u30d7\u5206\u3051\n    ORDER BY hire_date           -- \u2461 \u5165\u793e\u65e5\u3067\u4e26\u3073\u66ff\u3048\n    ROWS BETWEEN 1 PRECEDING     -- \u2462 1\u884c\u524d\u304b\u3089\n             AND 1 FOLLOWING     --    1\u884c\u5f8c\u307e\u3067\u3092\u7bc4\u56f2\u3068\u3059\u308b\n  ) AS avg_salary_around\nFROM\n  employees;\n<\/code><\/pre>\n
              \u3053\u306eOVER()<\/code>\u306e\u4e2d\u8eab\uff08\u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9\uff09\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u89e3\u91c8\u3055\u308c\u307e\u3059\u3002<\/p>\n
                \n
              1. PARTITION BY department<\/code><\/strong>: \u307e\u305a\u3001\u5168\u5f93\u696d\u54e1\u3092\u300c\u90e8\u7f72\u300d\u3054\u3068\u306b\u5206\u5272\u3057\u307e\u3059\u3002\u8a08\u7b97\u306f\u90e8\u7f72\u5185\u3067\u5b8c\u7d50\u3057\u3001\u4ed6\u306e\u90e8\u7f72\u306e\u30c7\u30fc\u30bf\u306f\u5f71\u97ff\u3057\u307e\u305b\u3093\u3002<\/li>\n
              2. ORDER BY hire_date<\/code><\/strong>: \u5206\u5272\u3055\u308c\u305f\u90e8\u7f72\u306e\u4e2d\u3067\u3001\u5f93\u696d\u54e1\u3092\u300c\u5165\u793e\u65e5\u300d\u306e\u65e9\u3044\u9806\u306b\u4e26\u3079\u307e\u3059\u3002<\/li>\n
              3. ROWS BETWEEN 1 PRECEDING AND 1 FOLLOWING<\/code><\/strong>: \u5165\u793e\u65e5\u9806\u306b\u4e26\u3093\u3060\u30ec\u30b3\u30fc\u30c9\u306b\u5bfe\u3057\u3001\u8a08\u7b97\u7bc4\u56f2\u3092\u300c\u73fe\u5728\u306e\u884c\u306e1\u884c\u524d (1 PRECEDING<\/code>) \u304b\u30891\u884c\u5f8c (1 FOLLOWING<\/code>) \u307e\u3067\u300d\u306b\u9650\u5b9a\u3057\u307e\u3059\u3002\uff08\u203b\u5148\u982d\u884c\u306e\u5834\u5408\u306f\u81ea\u5206\u3068\u6b21\u306e\u884c\u3001\u6700\u7d42\u884c\u306e\u5834\u5408\u306f\u81ea\u5206\u3068\u524d\u306e\u884c\u304c\u5bfe\u8c61\u306b\u306a\u308a\u307e\u3059\uff09<\/li>\n
              4. AVG(salary) OVER(...)<\/code><\/strong>: \u6700\u7d42\u7684\u306b\u3001\u4e0a\u8a18\u3067\u6307\u5b9a\u3055\u308c\u305f\u7bc4\u56f2\uff08\u6700\u59273\u884c\uff09\u306b\u542b\u307e\u308c\u308b\u30ec\u30b3\u30fc\u30c9\u306esalary<\/code>\u306e\u5e73\u5747\u5024\u3092\u8a08\u7b97\u3057\u3001avg_salary_around<\/code>\u5217\u3068\u3057\u3066\u8fd4\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n
                \u3053\u306e\u3088\u3046\u306b\u3001\u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9\u306e\u5404\u8981\u7d20\u304c\u6301\u3064\u5f79\u5272\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u8907\u96d1\u306a\u8981\u4ef6\u3067\u3082SQL\u3067\u30b9\u30de\u30fc\u30c8\u306b\u8868\u73fe\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
                🧩 \u57fa\u672c\u306e\u8003\u3048\u65b9\uff1aOVER\u53e5\u306e\u4e2d\u306eORDER BY\u306f\u300c\u5148\u982d\u2192\u73fe\u5728\u884c\u300d\u306e\u7d2f\u8a08<\/h2>\n
                ORDER BY \u3092\u6307\u5b9a\u3057\u305f\u6642\u70b9\u3067\u3001SQL\u306f\u300c\u5148\u982d\u884c\u304b\u3089\u73fe\u5728\u884c\u307e\u3067\u300d\u306e\u7bc4\u56f2\u3092\u81ea\u52d5\u7684\u306b\u30a6\u30a3\u30f3\u30c9\u30a6\u3068\u3057\u3066\u8a8d\u8b58\u3059\u308b\u3002<\/strong><\/p>\n
                \u305d\u306e\u5f8c\u306b ROWS<\/code> \u3084 RANGE<\/code> \u3092\u6307\u5b9a\u3059\u308b\u3068\u3001
                \u300c\u305d\u306e\u30a6\u30a3\u30f3\u30c9\u30a6\u306e\u3069\u3053\u304b\u3089\u3069\u3053\u307e\u3067\u3092\u96c6\u8a08\u3059\u308b\u304b\uff08\uff1d\u7bc4\u56f2\uff09\u300d\u3092\u7d30\u304b\u304f\u8abf\u6574\u3067\u304d\u308b\u3002<\/p>\n
                \u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u300c\u5148\u982d\u304b\u3089\u73fe\u5728\u884c\u307e\u3067\u300d<\/h3>\n
                \n
                SUM<\/span>(\u58f2\u4e0a) OVER<\/span>(ORDER<\/span> BY<\/span> \u65e5\u4ed8)
                \n<\/code><\/div>\n<\/div>\n
                \u3053\u306e\u3068\u304d\u3001SQL\u306e\u5185\u90e8\u3067\u306f\u81ea\u52d5\u7684\u306b\u6b21\u306e\u3088\u3046\u306a\u7bc4\u56f2\uff08frame\uff09\u304c\u8a2d\u5b9a\u3055\u308c\u307e\u3059\uff1a<\/p>\n
                \n
                RANGE<\/span> BETWEEN<\/span> UNBOUNDED PRECEDING AND<\/span> CURRENT<\/span> ROW<\/span>
                \n<\/code><\/div>\n<\/div>\n
                \u610f\u5473\u306f\uff1a<\/p>\n
                \n
                \u300c\u6700\u521d\u306e\u884c\uff08=UNBOUNDED PRECEDING\uff09\u304b\u3089\u4eca\u306e\u884c\u307e\u3067\u300d<\/p>\n<\/blockquote>\n
                \u3064\u307e\u308a\u3053\u308c\u304c\u300c\u7d2f\u8a08\uff08running total\uff09<\/strong>\u300d\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
                \n
                \n\n\n\n\n\n\n\n
                \u65e5\u4ed8<\/th>\n\u58f2\u4e0a<\/th>\n\u7d2f\u8a08\u58f2\u4e0a<\/th>\n<\/tr>\n<\/thead>\n
                1\u65e5<\/td>\n100<\/td>\n100<\/td>\n<\/tr>\n
                2\u65e5<\/td>\n200<\/td>\n300<\/td>\n<\/tr>\n
                3\u65e5<\/td>\n300<\/td>\n600<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
                \u00a0\u7bc4\u56f2\u3092\u9650\u5b9a\u3057\u305f\u3044\u3068\u304d\u306b\u4f7f\u3046\u306e\u304c ROWS<\/code> \/ RANGE<\/code><\/h3>\n
                \u300c\u5168\u90e8\u3058\u3083\u306a\u304f\u3066\u3001\u76f4\u8fd13\u884c\u3060\u3051\u300d\u300c\u73fe\u5728\u884c\u306e\u524d\u5f8c1\u884c\u3060\u3051\u300d\u306a\u3069\u3092\u96c6\u8a08\u3057\u305f\u3044\u5834\u5408👇<\/p>\n
                \n
                AVG<\/span>(\u58f2\u4e0a) OVER<\/span>(
                \nORDER<\/span> BY<\/span> \u65e5\u4ed8
                \nROWS<\/span> BETWEEN<\/span> 2<\/span> PRECEDING AND<\/span> CURRENT<\/span> ROW<\/span>
                \n)
                \n<\/code><\/div>\n<\/div>\n
                \u3053\u308c\u3067\u300c\u904e\u53bb2\u884c\uff0b\u73fe\u5728\u884c<\/strong>\u300d\u306e\u5e73\u5747\u3092\u6bce\u56de\u8a08\u7b97\u3059\u308b\u3001\u3044\u308f\u3086\u308b**\u79fb\u52d5\u5e73\u5747\uff08moving average\uff09**\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
                \n
                \n\n\n\n\n\n\n\n\n
                \u65e5\u4ed8<\/th>\n\u58f2\u4e0a<\/th>\n\u79fb\u52d5\u5e73\u5747<\/th>\n<\/tr>\n<\/thead>\n
                1\u65e5<\/td>\n100<\/td>\n100<\/td>\n<\/tr>\n
                2\u65e5<\/td>\n200<\/td>\n150<\/td>\n<\/tr>\n
                3\u65e5<\/td>\n300<\/td>\n200<\/td>\n<\/tr>\n
                4\u65e5<\/td>\n400<\/td>\n300<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
                🧠 OVER\u53e5\u306e\u4e2d\u306eORDER BY\u3067\u4f7f\u308f\u308c\u308b \u30ad\u30fc\u30ef\u30fc\u30c9\u306e\u95a2\u4fc2\u307e\u3068\u3081<\/h3>\n
                \n
                \n\n\n\n\n\n\n\n\n\n
                \u30ad\u30fc\u30ef\u30fc\u30c9<\/th>\n\u610f\u5473<\/th>\n<\/tr>\n<\/thead>\n
                UNBOUNDED PRECEDING<\/code><\/td>\n\u30a6\u30a3\u30f3\u30c9\u30a6\u306e\u5148\u982d\u884c\uff08\uff1d\u6700\u521d\u306e\u884c\uff09<\/td>\n<\/tr>\n
                CURRENT ROW<\/code><\/td>\n\u73fe\u5728\u306e\u884c<\/td>\n<\/tr>\n
                UNBOUNDED FOLLOWING<\/code><\/td>\n\u30a6\u30a3\u30f3\u30c9\u30a6\u306e\u672b\u5c3e\uff08\uff1d\u6700\u5f8c\u306e\u884c\uff09<\/td>\n<\/tr>\n
                <n> PRECEDING<\/code><\/td>\n\u73fe\u5728\u884c\u306e\u524dn\u884c\u307e\u3067<\/td>\n<\/tr>\n
                <n> FOLLOWING<\/code><\/td>\n\u73fe\u5728\u884c\u306e\u5f8cn\u884c\u307e\u3067<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
                \u3053\u308c\u3092 BETWEEN \uff5e AND \uff5e<\/code> \u306e\u5f62\u3067\u7d44\u307f\u5408\u308f\u305b\u307e\u3059👇<\/p>\n
                \n
                \n\n\n\n\n\n\n\n\n
                \u6307\u5b9a<\/th>\n\u610f\u5473<\/th>\n\u5178\u578b\u7528\u9014<\/th>\n<\/tr>\n<\/thead>\n
                BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW<\/code><\/td>\n\u5148\u982d\u304b\u3089\u73fe\u5728\u307e\u3067<\/td>\n\u7d2f\u8a08<\/td>\n<\/tr>\n
                BETWEEN 2 PRECEDING AND CURRENT ROW<\/code><\/td>\n\u904e\u53bb2\u884c\uff0b\u73fe\u5728\u884c<\/td>\n\u79fb\u52d5\u5e73\u5747<\/td>\n<\/tr>\n
                BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING<\/code><\/td>\n\u73fe\u5728\u304b\u3089\u6700\u5f8c\u307e\u3067<\/td>\n\u5f8c\u65b9\u7d2f\u7a4d<\/td>\n<\/tr>\n
                BETWEEN 1 PRECEDING AND 1 FOLLOWING<\/code><\/td>\n\u524d\u5f8c1\u884c<\/td>\n\u5e73\u6ed1\u5316\u306a\u3069<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
                📈 OVER\u53e5\u306e\u4e2d\u306eORDER BY\u3092\u30a4\u30e1\u30fc\u30b8\u3067\u8868\u3059\u3068<\/h3>\n
                \n
                [1]<\/span>\u2500\u2500\u2500\u2500\u2500\u2500\u2500[2]<\/span>\u2500\u2500\u2500\u2500\u2500\u2500\u2500[3]<\/span>\u2500\u2500\u2500\u2500\u2500\u2500\u2500[4]<\/span>
                \n\u2191        \u2191        \u2191        \u2191
                \n\u884c1<\/span>: \u3053\u3053\u307e\u3067\uff08100<\/span>\uff09
                \n\u884c2<\/span>: \u3053\u3053\u307e\u3067\uff08100<\/span>+200<\/span>\uff09
                \n\u884c3<\/span>: \u3053\u3053\u307e\u3067\uff08100<\/span>+200<\/span>+300<\/span>\uff09
                \n<\/code><\/div>\n<\/div>\n
                \u3053\u306e\u300c\u201c\u3053\u3053\u307e\u3067\u201d\u3092\u6bce\u56de\u8a08\u7b97\u3059\u308b\u300d\u306e\u304c ORDER BY<\/code> + OVER()<\/code> \u306e\u52d5\u304d\u3002
                \u305d\u306e\u300c\u3053\u3053\u307e\u3067\u300d\u306e\u7bc4\u56f2\u3092\u81ea\u7531\u306b\u8abf\u6574\u3059\u308b\u306e\u304c ROWS<\/code> \/ RANGE<\/code> \u3067\u3059\u3002<\/p>\n
                \n
                \n\n\n\n\n\n\n\n
                \u72b6\u6cc1<\/th>\nSQL\u8a18\u8ff0<\/th>\n\u7bc4\u56f2\u306e\u610f\u5473<\/th>\n\u7d50\u679c<\/th>\n<\/tr>\n<\/thead>\n
                \u57fa\u672c\u5f62<\/td>\nSUM(\u58f2\u4e0a) OVER(ORDER BY \u65e5\u4ed8)<\/code><\/td>\n\u5148\u982d\uff5e\u73fe\u5728\u884c<\/td>\n\u7d2f\u8a08<\/td>\n<\/tr>\n
                \u7bc4\u56f2\u6307\u5b9a\u3042\u308a<\/td>\nAVG(\u58f2\u4e0a) OVER(ORDER BY \u65e5\u4ed8 ROWS BETWEEN 2 PRECEDING AND CURRENT ROW)<\/code><\/td>\n\u904e\u53bb2\u884c\uff0b\u73fe\u5728\u884c<\/td>\n\u79fb\u52d5\u5e73\u5747<\/td>\n<\/tr>\n
                \u660e\u793a\u7684\u306b\u5168\u4f53<\/td>\nSUM(\u58f2\u4e0a) OVER()<\/code><\/td>\n\u5168\u4f53\u56fa\u5b9a<\/td>\n\u5168\u4f53\u5408\u8a08<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
                <\/i>\u4e00\u8a00\u3067\u307e\u3068\u3081\u308b\u3068<\/p>
                \n
                ORDER BY<\/code> \u304c\u300c\u9806\u756a\u300d\u3092\u4f5c\u308a\u3001
                \u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u5148\u982d\u304b\u3089\u73fe\u5728\u884c\u307e\u3067\u3092\u96c6\u8a08\u3002
                \u305d\u3053\u306b ROWS<\/code> \/ RANGE<\/code> \u3092\u52a0\u3048\u308b\u3068\u300c\u96c6\u8a08\u7bc4\u56f2\u300d\u3092\u7d30\u304b\u304f\u64cd\u308c\u308b\u3002<\/strong><\/p>\n<\/div><\/div>\n
                SQL\u306eWINDOW\u53e5\u3068\u306f\uff1f\u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9\u306e\u7e70\u308a\u8fd4\u3057\u3092\u907f\u3051\u3066SQL\u3092\u52b9\u7387\u5316<\/h2>\n
                \u8907\u96d1\u306a\u30c7\u30fc\u30bf\u5206\u6790\u3092\u884c\u3046\u3068\u3001SELECT<\/code>\u53e5\u306e\u4e2d\u3067\u540c\u3058\u5185\u5bb9\u306e\u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9\uff08OVER(...)<\/code>\u306e\u4e2d\u8eab\uff09\u3092\u4f55\u5ea6\u3082\u8a18\u8ff0\u3059\u308b\u5834\u9762\u306b\u906d\u9047\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u300c\u90e8\u7f72\u3054\u3068\u306e\u7d66\u4e0e\u30e9\u30f3\u30ad\u30f3\u30b0\u300d\u3068\u300c\u90e8\u7f72\u3054\u3068\u306e\u7d66\u4e0e\u7d2f\u8a08\u300d\u3092\u540c\u6642\u306b\u8a08\u7b97\u3059\u308b\u5834\u5408\u3001\u3069\u3061\u3089\u3082OVER (PARTITION BY department ORDER BY salary DESC)<\/code>\u3068\u3044\u3046\u5168\u304f\u540c\u3058\u5b9a\u7fa9\u3092\u4f7f\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
                \u3053\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u306e\u7e70\u308a\u8fd4\u3057\u306f\u3001SQL\u3092\u8aad\u307f\u306b\u304f\u304f\u3059\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u5f8c\u3067\u4fee\u6b63\u304c\u5fc5\u8981\u306b\u306a\u3063\u305f\u969b\u306b\u8907\u6570\u306e\u7b87\u6240\u3092\u76f4\u3055\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u305f\u3081\u3001\u30df\u30b9\u306e\u539f\u56e0\u306b\u3082\u306a\u308a\u307e\u3059\u3002<\/p>\n
                \u3053\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u306e\u304cWINDOW<\/code>\u53e5\u3067\u3059\u3002WINDOW<\/code>\u53e5\u306f\u3001\u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9\u306b\u540d\u524d\uff08\u30a8\u30a4\u30ea\u30a2\u30b9\uff09\u3092\u4ed8\u3051\u3001\u305d\u308c\u3092\u4f7f\u3044\u56de\u3059\u305f\u3081\u306e\u6a5f\u80fd<\/strong>\u3067\u3059\u3002\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u304a\u3051\u308b\u300c\u5909\u6570\u300d\u306e\u3088\u3046\u306b\u3001\u4e00\u5ea6\u5b9a\u7fa9\u3059\u308c\u3070\u4f55\u5ea6\u3067\u3082\u540d\u524d\u3067\u547c\u3073\u51fa\u305b\u308b\u305f\u3081\u3001SQL\u3092\u975e\u5e38\u306b\u30b9\u30c3\u30ad\u30ea\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
                WINDOW<\/code>\u53e5\u306e\u69cb\u6587\u30eb\u30fc\u30eb\u3068\u300c\u4f4d\u7f6e\u300d<\/h3>\n
                WINDOW<\/code>\u53e5\u3092\u7406\u89e3\u3059\u308b\u4e0a\u3067\u6700\u3082\u91cd\u8981\u306a\u306e\u306f\u3001\u305d\u306e\u300c\u8a18\u8ff0\u3059\u308b\u4f4d\u7f6e<\/strong>\u300d\u3067\u3059\u3002
                \nOVER()<\/code>\u53e5\u304cSELECT<\/code>\u53e5\u306e\u4e2d\u306b\u66f8\u304b\u308c\u308b\u306e\u306b\u5bfe\u3057\u3001WINDOW<\/code>\u53e5\u306fFROM<\/code>\u53e5\u3084WHERE<\/code>\u53e5\u3088\u308a\u3082\u5f8c\u3001ORDER BY<\/code>\u53e5\u3088\u308a\u3082\u524d<\/strong>\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n
                \u4f7f\u3044\u65b9\u306f\u30b7\u30f3\u30d7\u30eb\u3067\u3059\u3002<\/p>\n
                  \n
                1. SQL\u6587\u306e\u5f8c\u534a\uff08FROM<\/code>\u53e5\u3084WHERE<\/code>\u53e5\u306e\u5f8c\uff09\u306b\u3001WINDOW <\u540d\u524d> AS (<\u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9>)<\/code>\u3068\u3044\u3046\u5f62\u5f0f\u3067\u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9\u306b\u540d\u524d\u3092\u4ed8\u3051\u307e\u3059\u3002<\/li>\n
                2. SELECT<\/code>\u53e5\u306e\u4e2d\u3067\u306f\u3001OVER <\u540d\u524d><\/code>\u3068\u3044\u3046\u5f62\u5f0f\u3067\u3001\u5b9a\u7fa9\u3057\u305f\u540d\u524d\u3092\u547c\u3073\u51fa\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n
                  WINDOW<\/code>\u53e5\u3092\u4f7f\u3063\u305fSQL\u306e\u6bd4\u8f03\uff08Before\/After\uff09<\/h3>\n
                  \u30b7\u30ca\u30ea\u30aa<\/strong>: \u90e8\u7f72\u3054\u3068\u306b\u7d66\u4e0e\u306e\u9ad8\u3044\u9806\u3067\u300c\u7d66\u4e0e\u30e9\u30f3\u30ad\u30f3\u30b0\u300d\u3068\u300c\u7d2f\u8a08\u7d66\u4e0e\u984d\u300d\u3092\u7b97\u51fa\u3059\u308b\u3002<\/p>\n
                  Before: WINDOW<\/code>\u53e5\u3092\u4f7f\u308f\u306a\u3044\u5834\u5408<\/h4>\n
                  \u540c\u3058OVER(...)<\/code>\u306e\u8a18\u8ff0\u304c2\u56de\u767b\u5834\u3057\u3001\u5197\u9577\u3067\u3059\u3002<\/p>\n
                  SELECT\n  employee_name,\n  department,\n  salary,\n  RANK() OVER (PARTITION BY department ORDER BY salary DESC) AS rnk,\n  SUM(salary) OVER (PARTITION BY department ORDER BY salary DESC) AS cumulative_salary\nFROM\n  employees;\n<\/code><\/pre>\n
                  After: WINDOW<\/code>\u53e5\u3092\u4f7f\u3063\u305f\u5834\u5408<\/h4>\n
                  WINDOW<\/code>\u53e5\u3067dep_window<\/code>\u3068\u3044\u3046\u540d\u524d\u3092\u5b9a\u7fa9\u3057\u3001SELECT<\/code>\u53e5\u304b\u30892\u56de\u547c\u3073\u51fa\u3057\u3066\u3044\u307e\u3059\u3002\u30b3\u30fc\u30c9\u304c\u7c21\u6f54\u3067\u3001\u610f\u56f3\u3082\u660e\u78ba\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n
                  SELECT\n  employee_name,\n  department,\n  salary,\n  RANK() OVER dep_window AS rnk,\n  SUM(salary) OVER dep_window AS cumulative_salary\nFROM\n  employees\nWINDOW dep_window AS (PARTITION BY department ORDER BY salary DESC);\n<\/code><\/pre>\n
                  \u3053\u306e\u3088\u3046\u306bWINDOW<\/code>\u53e5\u306f\u3001\u7279\u306b\u5fdc\u7528\u60c5\u5831\u3084DB\u30b9\u30da\u30b7\u30e3\u30ea\u30b9\u30c8\u8a66\u9a13\u306e\u9577\u6587SQL\u554f\u984c\u3067\u3001\u8907\u96d1\u306a\u30af\u30a8\u30ea\u306e\u53ef\u8aad\u6027\u3092\u4e0a\u3052\u308b\u305f\u3081\u306b\u4f7f\u308f\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u300cFROM<\/code>\u53e5\u306e\u5f8c\u306bWINDOW<\/code>\u3068\u3044\u3046\u30ad\u30fc\u30ef\u30fc\u30c9\u304c\u51fa\u3066\u304d\u305f\u3089\u3001\u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9\u306b\u540d\u524d\u3092\u4ed8\u3051\u3066\u3044\u308b\u3093\u3060\u306a\u300d<\/strong>\u3068\u77ac\u6642\u306b\u5224\u65ad\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n
                  \u3010\u5fdc\u7528\u60c5\u5831\u983b\u51fa\u3011WINDOW\u53e5\u3068WITH\u53e5\u306e\u9055\u3044\u3068\u306f\uff1f\u5f79\u5272\u3068\u69cb\u6587\u4f4d\u7f6e\u3067\u6bd4\u8f03<\/h2>\n
                  WINDOW<\/code>\u53e5\u3092\u5b66\u7fd2\u3059\u308b\u3068\u3001\u5fc5\u305a\u3068\u8a00\u3063\u3066\u3044\u3044\u307b\u3069\u300cWITH<\/code>\u53e5\u3068\u4f55\u304c\u9055\u3046\u306e\uff1f\u300d\u3068\u3044\u3046\u7591\u554f\u304c\u751f\u307e\u308c\u307e\u3059\u3002\u3069\u3061\u3089\u3082W<\/code>\u304b\u3089\u59cb\u307e\u308b\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u3001\u4f55\u304b\u3092\u5b9a\u7fa9\u3057\u3066\u518d\u5229\u7528\u3059\u308b\u3001\u3068\u3044\u3046\u70b9\u3067\u975e\u5e38\u306b\u4f3c\u3066\u3044\u308b\u305f\u3081\u3001\u6df7\u540c\u3057\u3084\u3059\u3044\u306e\u3082\u7121\u7406\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n
                  \u3057\u304b\u3057\u3001\u3053\u306e2\u3064\u306f\u5f79\u5272\u3082\u8a18\u8ff0\u3059\u308b\u4f4d\u7f6e\u3082\u5168\u304f\u7570\u306a\u308a\u307e\u3059\u3002\u5fdc\u7528\u60c5\u5831\u6280\u8853\u8005\u8a66\u9a13\u3084DB\u30b9\u30da\u30b7\u30e3\u30ea\u30b9\u30c8\u8a66\u9a13\u3067\u306f\u3001\u3053\u306e\u9055\u3044\u3092\u7406\u89e3\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u9577\u6587SQL\u8aad\u89e3\u306e\u524d\u63d0\u3068\u306a\u308b\u305f\u3081\u3001\u3053\u3053\u3067\u660e\u78ba\u306b\u533a\u5225\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n
                  \u7d50\u8ad6\u304b\u3089\u8a00\u3046\u3068\u3001\u9055\u3044\u306f\u300c\u4f55\u306b\u540d\u524d\u3092\u4ed8\u3051\u3066\u518d\u5229\u7528\u3059\u308b\u304b\u300d<\/strong>\u3067\u3059\u3002<\/p>\n
                    \n
                  • WITH<\/code>\u53e5\uff1a\u30c6\u30fc\u30d6\u30eb\uff08SELECT<\/code>\u6587\u306e\u5b9f\u884c\u7d50\u679c\uff09<\/strong>\u306b\u540d\u524d\u3092\u4ed8\u3051\u308b<\/li>\n
                  • WINDOW<\/code>\u53e5\uff1a\u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9\uff08OVER()<\/code>\u306e\u4e2d\u8eab\uff09<\/strong>\u306b\u540d\u524d\u3092\u4ed8\u3051\u308b<\/li>\n<\/ul>\n
                    WITH<\/code>\u53e5\uff1a\u30c6\u30fc\u30d6\u30eb\u306b\u540d\u524d\u3092\u4ed8\u3051\u308b\uff08\u5171\u901a\u30c6\u30fc\u30d6\u30eb\u5f0f\uff09<\/h3>\n
                    WITH<\/code>\u53e5\u306f\u300c\u5171\u901a\u30c6\u30fc\u30d6\u30eb\u5f0f\uff08Common Table Expressions, CTE\uff09\u300d\u3068\u3082\u547c\u3070\u308c\u3001SELECT<\/code>\u6587\u306b\u3088\u3063\u3066\u5f97\u3089\u308c\u308b\u7d50\u679c\u30bb\u30c3\u30c8\uff08\u3064\u307e\u308a\u3001\u4e00\u6642\u7684\u306a\u30c6\u30fc\u30d6\u30eb\uff09\u306b\u540d\u524d\u3092\u4e0e\u3048\u308b<\/strong>\u6a5f\u80fd\u3067\u3059\u3002<\/p>\n
                    \u8907\u96d1\u306aSQL\u3092\u3044\u304f\u3064\u304b\u306e\u5358\u7d14\u306a\u51e6\u7406\u30d6\u30ed\u30c3\u30af\u306b\u5206\u5272\u3057\u3001\u305d\u308c\u305e\u308c\u306b\u540d\u524d\u3092\u4ed8\u3051\u3066\u7d44\u307f\u7acb\u3066\u3066\u3044\u304f\u3088\u3046\u306a\u30a4\u30e1\u30fc\u30b8\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30b5\u30d6\u30af\u30a8\u30ea\u304c\u4f55\u91cd\u306b\u3082\u30cd\u30b9\u30c8\uff08\u5165\u308c\u5b50\uff09\u306b\u306a\u308b\u306e\u3092\u9632\u304e\u3001SQL\u5168\u4f53\u306e\u53ef\u8aad\u6027\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002<\/p>\n
                    \u6700\u3082\u91cd\u8981\u306a\u7279\u5fb4\u306f\u3001WITH<\/code>\u53e5\u306f\u5fc5\u305aSQL\u6587\u306e\u5148\u982d\u306b\u8a18\u8ff0\u3055\u308c\u308b<\/strong>\u3068\u3044\u3046\u70b9\u3067\u3059\u3002<\/p>\n
                    -- \u2460 WITH\u53e5\u3067\u300csales_summary\u300d\u3068\u3044\u3046\u540d\u524d\u306e\u4e00\u6642\u30c6\u30fc\u30d6\u30eb\u3092\u5b9a\u7fa9\nWITH sales_summary AS (\n  SELECT\n    department,\n    SUM(sales) AS total_sales\n  FROM\n    sales_data\n  GROUP BY\n    department\n)\n-- \u2461 \u5b9a\u7fa9\u3057\u305f\u300csales_summary\u300d\u3092\u901a\u5e38\u306e\u30c6\u30fc\u30d6\u30eb\u306e\u3088\u3046\u306b\u4f7f\u3063\u3066SELECT\u3059\u308b\nSELECT\n  *\nFROM\n  sales_summary\nWHERE\n  total_sales > 10000;\n<\/code><\/pre>\n
                    WINDOW<\/code>\u53e5\uff1a\u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9\u306b\u540d\u524d\u3092\u4ed8\u3051\u308b<\/h3>\n
                    \u4e00\u65b9\u3001WINDOW<\/code>\u53e5\u306f\u3001\u3053\u308c\u307e\u3067\u898b\u3066\u304d\u305f\u901a\u308a\u3001OVER(PARTITION BY ... ORDER BY ...)<\/code>\u3068\u3044\u3046\u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9\u306b\u540d\u524d\u3092\u4e0e\u3048\u308b<\/strong>\u6a5f\u80fd\u3067\u3059\u3002<\/p>\n
                    \u3053\u308c\u306f\u3042\u304f\u307e\u3067SELECT<\/code>\u53e5\u306e\u4e2d\u3067\u4f7f\u3046OVER<\/code>\u53e5\u306e\u8a18\u8ff0\u3092\u52b9\u7387\u5316\u30fb\u5171\u901a\u5316\u3059\u308b\u305f\u3081\u306e\u3082\u306e\u3067\u3042\u308a\u3001\u65b0\u3057\u3044\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u308a\u51fa\u3059\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u305d\u3057\u3066\u3001WINDOW<\/code>\u53e5\u306fFROM<\/code>\u53e5\u3084WHERE<\/code>\u53e5\u306e\u5f8c\u308d\u306b\u8a18\u8ff0\u3055\u308c\u307e\u3059<\/strong>\u3002<\/p>\n
                    \u4e00\u76ee\u3067\u308f\u304b\u308b\u6bd4\u8f03\u307e\u3068\u3081\u8868<\/h3>\n
                    WITH<\/code>\u53e5\u3068WINDOW<\/code>\u53e5\u306e\u9055\u3044\u3092\u3001\u4ee5\u4e0b\u306e\u8868\u306b\u307e\u3068\u3081\u307e\u3059\u3002<\/p>\n\n\n\n\n\n\n\n\n
                    \u6bd4\u8f03\u9805\u76ee<\/th>\nWITH<\/code>\u53e5\uff08\u5171\u901a\u30c6\u30fc\u30d6\u30eb\u5f0f\uff09<\/th>\nWINDOW<\/code>\u53e5<\/th>\n<\/tr>\n<\/thead>\n
                    \u76ee\u7684<\/strong><\/td>\n\u30c6\u30fc\u30d6\u30eb<\/strong>\uff08SELECT<\/code>\u6587\u306e\u7d50\u679c\uff09\u306e\u518d\u5229\u7528<\/td>\n\u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9<\/strong>\uff08OVER()<\/code>\u306e\u4e2d\u8eab\uff09\u306e\u518d\u5229\u7528<\/td>\n<\/tr>\n
                    \u8a18\u8ff0\u4f4d\u7f6e<\/strong><\/td>\nSQL\u6587\u306e\u5148\u982d<\/strong><\/td>\nFROM<\/code>\u53e5\u3084WHERE<\/code>\u53e5\u306e\u5f8c<\/strong><\/td>\n<\/tr>\n
                    \u69cb\u6587\u4f8b<\/strong><\/td>\nWITH temp AS (...) SELECT ...<\/code><\/td>\nSELECT ... OVER w ... WINDOW w AS (...)<\/code><\/td>\n<\/tr>\n
                    \u4e3b\u306a\u5f79\u5272<\/strong><\/td>\n\u8907\u96d1\u306a\u30af\u30a8\u30ea\u306e\u5206\u5272\u3001\u53ef\u8aad\u6027\u306e\u5411\u4e0a<\/td>\n\u540c\u3058\u96c6\u8a08\u7bc4\u56f2\u30fb\u9806\u5e8f\u8a2d\u5b9a\u306e\u4f7f\u3044\u56de\u3057\u3001\u5197\u9577\u6027\u306e\u6392\u9664<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                    \u3053\u306e2\u3064\u306f\u5168\u304f\u306e\u5225\u7269\u3067\u3059\u3002\u300cWITH<\/code>\u306fSQL\u306e\u6700\u521d\u306b\u66f8\u304f\u3001\u30c6\u30fc\u30d6\u30eb\u306e\u5225\u540d<\/strong>\u300d\u300cWINDOW<\/code>\u306fSQL\u306e\u9014\u4e2d\u306b\u66f8\u304f\u3001OVER<\/code>\u53e5\u8a2d\u5b9a\u306e\u5225\u540d<\/strong>\u300d\u3068\u3001\u4f4d\u7f6e\u3068\u5f79\u5272\u3092\u30bb\u30c3\u30c8\u3067\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n
                    SQL\u69cb\u6587\u306e\u8a18\u8ff0\u9806\u5e8f\u3068\u5b9f\u884c\u9806\u5e8f\u2502WITH\u30fbWINDOW\u53e5\u306e\u4f4d\u7f6e\u95a2\u4fc2\u307e\u3068\u3081<\/h2>\n
                    \u3053\u3053\u307e\u3067WITH<\/code>\u53e5\u3001WINDOW<\/code>\u53e5\u3001\u305d\u3057\u3066OVER()<\/code>\u53e5\u5185\u306e\u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9\u3068\u3001\u69d8\u3005\u306a\u69cb\u6587\u8981\u7d20\u304c\u767b\u5834\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u3089\u3092\u7d44\u307f\u5408\u308f\u305b\u305fSELECT<\/code>\u6587\u5168\u4f53\u3092\u66f8\u304f\u3068\u304d\u3001\u5404\u53e5\u306e\u300c\u8a18\u8ff0\u3059\u308b\u9806\u756a\u300d\u306b\u306f\u53b3\u683c\u306a\u30eb\u30fc\u30eb\u304c\u5b58\u5728\u3057\u307e\u3059\u3002<\/p>\n
                    \u3053\u306e\u9806\u5e8f\u3092\u6b63\u3057\u304f\u7406\u89e3\u3057\u3001\u899a\u3048\u308b\u3053\u3068\u306f\u3001SQL\u3092\u6b63\u78ba\u306b\u66f8\u304f\u305f\u3081\u306e\u7d76\u5bfe\u6761\u4ef6\u3067\u3059\u3002\u7279\u306b\u8a66\u9a13\u554f\u984c\u3067\u306f\u3001\u69cb\u6587\u306e\u6b63\u3057\u3055\u304c\u76f4\u63a5\u554f\u308f\u308c\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n
                    SQL\u69cb\u6587\u306e\u6b63\u3057\u3044\u300c\u8a18\u8ff0\u9806\u5e8f\u300d<\/h3>\n
                    \u79c1\u305f\u3061\u304cSQL\u3092\u66f8\u304f\u969b\u306e\u6b63\u3057\u3044\u53e5\u306e\u9806\u5e8f\u306f\u3001\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002[]<\/code>\u3067\u56f2\u307e\u308c\u305f\u53e5\u306f\u7701\u7565\u53ef\u80fd\u3067\u3059\u3002<\/p>\n
                    -- \u79c1\u305f\u3061\u304cSQL\u3092\u66f8\u304f\u3068\u304d\u306e\u6b63\u3057\u3044\u9806\u756a\nWITH ...\nSELECT [DISTINCT] ... [OVER (...)]\nFROM ...\n[WHERE ...]\n[GROUP BY ...]\n[HAVING ...]\n[WINDOW ...]\n[ORDER BY ...]\n[LIMIT ...];\n<\/code><\/pre>\n
                    \u3053\u306e\u9806\u756a\u306f\u9244\u5247\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001WHERE<\/code>\u53e5\u3092FROM<\/code>\u53e5\u306e\u524d\u306b\u66f8\u3044\u305f\u308a\u3001ORDER BY<\/code>\u53e5\u3092WINDOW<\/code>\u53e5\u306e\u524d\u306b\u66f8\u304f\u3053\u3068\u306f\u3067\u304d\u305a\u3001\u30a8\u30e9\u30fc\u3068\u306a\u308a\u307e\u3059\u3002WINDOW<\/code>\u53e5\u304cGROUP BY<\/code>\u3084HAVING<\/code>\u306e\u5f8c\u3001ORDER BY<\/code>\u306e\u524d\u306b\u4f4d\u7f6e\u3059\u308b\u3053\u3068\u3092\u6539\u3081\u3066\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
                    \u91cd\u8981\uff1a\u8a18\u8ff0\u9806\u3068\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u5185\u90e8\u306e\u300c\u8ad6\u7406\u7684\u306a\u5b9f\u884c\u9806\u5e8f\u300d\u306f\u7570\u306a\u308b<\/h3>\n
                    \u3053\u3053\u3067\u975e\u5e38\u306b\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u306f\u3001\u79c1\u305f\u3061\u304c\u4e0a\u8a18\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3059\u308b\u9806\u5e8f<\/strong>\u3068\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30b7\u30b9\u30c6\u30e0\u304c\u5185\u90e8\u3067SQL\u3092\u89e3\u91c8\u3057\u3066\u51e6\u7406\u3092\u5b9f\u884c\u3059\u308b\u9806\u5e8f\uff08\u8ad6\u7406\u5b9f\u884c\u9806\u5e8f\uff09<\/strong>\u306f\u7570\u306a\u308b\u3001\u3068\u3044\u3046\u70b9\u3067\u3059\u3002<\/p>\n
                    \u300cSELECT<\/code>\u53e5\u3067\u4ed8\u3051\u305f\u5217\u306e\u5225\u540d\uff08\u30a8\u30a4\u30ea\u30a2\u30b9\uff09\u3092\u3001\u306a\u305cWHERE<\/code>\u53e5\u3067\u4f7f\u3048\u306a\u3044\u306e\uff1f\u300d\u3068\u3044\u3046\u8ab0\u3082\u304c\u4e00\u5ea6\u306f\u62b1\u304f\u7591\u554f\u306e\u7b54\u3048\u306f\u3001\u3053\u306e\u5b9f\u884c\u9806\u5e8f\u306b\u96a0\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
                    \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u5185\u90e8\u3067\u306e\u3001\u5927\u307e\u304b\u306a\u8ad6\u7406\u7684\u306a\u5b9f\u884c\u9806\u5e8f\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n
                      \n
                    1. FROM<\/code><\/strong>: \u307e\u305a\u3001\u64cd\u4f5c\u5bfe\u8c61\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u78ba\u5b9a\u3057\u307e\u3059\u3002<\/li>\n
                    2. WHERE<\/code><\/strong>: \u6b21\u306b\u3001WHERE<\/code>\u53e5\u306e\u6761\u4ef6\u306b\u57fa\u3065\u3044\u3066\u3001\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u5fc5\u8981\u306a\u884c\u3060\u3051\u3092\u7d5e\u308a\u8fbc\u307f\u307e\u3059\u3002<\/li>\n
                    3. GROUP BY<\/code><\/strong>: GROUP BY<\/code>\u53e5\u306e\u6307\u5b9a\u306b\u5f93\u3063\u3066\u3001\u7d5e\u308a\u8fbc\u3093\u3060\u884c\u3092\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u307e\u3059\u3002<\/li>\n
                    4. HAVING<\/code><\/strong>: \u30b0\u30eb\u30fc\u30d7\u5316\u3057\u305f\u7d50\u679c\u306b\u5bfe\u3057\u3066\u3001HAVING<\/code>\u53e5\u306e\u6761\u4ef6\u3067\u3055\u3089\u306b\u7d5e\u308a\u8fbc\u307f\u307e\u3059\u3002<\/li>\n
                    5. SELECT<\/code><\/strong>: \u3053\u3053\u3067\u521d\u3081\u3066\u3001SELECT<\/code>\u53e5\u306b\u6307\u5b9a\u3055\u308c\u305f\u5217\u304c\u8a55\u4fa1\u3055\u308c\u307e\u3059\u3002\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570(OVER<\/code>)\u306e\u8a08\u7b97\u3082\u3053\u306e\u6bb5\u968e\u3067\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/strong><\/li>\n
                    6. ORDER BY<\/code><\/strong>: SELECT<\/code>\u53e5\u3067\u4f5c\u308a\u51fa\u3055\u308c\u305f\u6700\u7d42\u7684\u306a\u7d50\u679c\u30bb\u30c3\u30c8\u3092\u3001\u6307\u5b9a\u3055\u308c\u305f\u9806\u5e8f\u306b\u4e26\u3079\u66ff\u3048\u307e\u3059\u3002<\/li>\n
                    7. LIMIT<\/code><\/strong>: \u4e26\u3079\u66ff\u3048\u305f\u7d50\u679c\u304b\u3089\u3001\u8868\u793a\u3059\u308b\u884c\u6570\u3092\u5236\u9650\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n
                      WHERE<\/code>\u53e5\u3067SELECT<\/code>\u53e5\u306e\u5225\u540d\u304c\u4f7f\u3048\u306a\u3044\u306e\u306f\u3001\u5b9f\u884c\u9806\u5e8f\u3068\u3057\u3066WHERE<\/code>\u53e5\u306e\u51e6\u7406(\u30b9\u30c6\u30c3\u30d72)\u304cSELECT<\/code>\u53e5\u306e\u51e6\u7406(\u30b9\u30c6\u30c3\u30d75)\u3088\u308a\u3082\u5148\u306b\u884c\u308f\u308c\u308b\u305f\u3081\u3067\u3059\u3002WHERE<\/code>\u53e5\u304c\u51e6\u7406\u3055\u308c\u308b\u6642\u70b9\u3067\u306f\u3001\u307e\u3060\u305d\u306e\u5225\u540d\u306f\u5b58\u5728\u3057\u3066\u3044\u306a\u3044\u306e\u3067\u3059\u3002<\/p>\n
                      \u307e\u305f\u3001WITH<\/code>\u53e5\u306f\u3053\u308c\u3089\u306e\u30e1\u30a4\u30f3\u30af\u30a8\u30ea\u304c\u5b9f\u884c\u3055\u308c\u308b\u524d\u306e\u6e96\u5099\u6bb5\u968e\u3068\u3057\u3066\u3001\u6700\u521d\u306b\u4e00\u6642\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002WINDOW<\/code>\u53e5\u306f\u3001\u30b9\u30c6\u30c3\u30d75\u306e\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u8a08\u7b97\u6642\u306b\u53c2\u7167\u3055\u308c\u308b\u5b9a\u7fa9\u60c5\u5831\u3001\u3068\u7406\u89e3\u3059\u308b\u3068\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n
                      \u899a\u3048\u308b\u306e\u306f3\u3064\u3060\u3051\uff01WITH, WINDOW, OVER\u53e5\u306e\u5f79\u5272\u3068\u69cb\u6587\u4e0a\u306e\u4f4d\u7f6e<\/h2>\n
                      \u3053\u3053\u307e\u3067\u591a\u304f\u306e\u30ad\u30fc\u30ef\u30fc\u30c9\u3068\u69cb\u6587\u30eb\u30fc\u30eb\u3092\u89e3\u8aac\u3057\u3066\u304d\u307e\u3057\u305f\u304c\u3001\u982d\u304c\u6df7\u4e71\u3057\u306a\u3044\u3088\u3046\u306b\u3001\u6700\u5f8c\u306b\u899a\u3048\u308b\u3079\u304d\u6838\u5fc3\u30923\u3064\u306e\u30dd\u30a4\u30f3\u30c8\u306b\u7d5e\u3063\u3066\u6574\u7406\u3057\u307e\u3059\u3002\u3053\u306e3\u3064\u306e\u53e5\u306e\u300c\u76ee\u7684\u300d\u3068\u300c\u4f4d\u7f6e\u300d\u306e\u9055\u3044\u3055\u3048\u62bc\u3055\u3048\u308c\u3070\u3001\u8907\u96d1\u306aSQL\u3082\u6016\u304f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n
                      ✅ Point 1: OVER<\/code>\u53e5\u306f\u300c\u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9\u300d\u305d\u306e\u3082\u306e<\/h3>\n
                      \u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u306e\u5fc3\u81d3\u90e8\u3067\u3042\u308a\u3001\u8a08\u7b97\u30eb\u30fc\u30eb\u3092\u76f4\u63a5\u6307\u5b9a\u3059\u308b\u306e\u304cOVER<\/code>\u53e5\u3067\u3059\u3002\u3053\u308c\u306f\u5fc5\u305aSELECT<\/code>\u53e5\u306e\u4e2d\u3067\u3001SUM()<\/code>\u3084RANK()<\/code>\u3068\u3044\u3063\u305f\u95a2\u6570\u306e\u76f4\u5f8c\u306b\u66f8\u304d\u307e\u3059\u3002PARTITION BY<\/code>\u3084ORDER BY<\/code>\u3068\u3044\u3063\u305f\u5177\u4f53\u7684\u306a\u8a08\u7b97\u7bc4\u56f2\u306e\u8a2d\u8a08\uff08\u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9\uff09\u306f\u3001\u3059\u3079\u3066\u3053\u306eOVER()<\/code>\u306e\u30ab\u30c3\u30b3\u306e\u4e2d\u306b\u8a18\u8ff0\u3055\u308c\u307e\u3059\u3002<\/p>\n
                      ✅ Point 2: WINDOW<\/code>\u53e5\u306f\u300c\u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9\u306e\u518d\u5229\u7528\u300d<\/h3>\n
                      \u540c\u3058\u30a6\u30a3\u30f3\u30c9\u30a6\u5b9a\u7fa9\uff08OVER<\/code>\u53e5\u306e\u4e2d\u8eab\uff09\u3092\u4f55\u5ea6\u3082\u66f8\u304f\u306e\u3092\u907f\u3051\u308b\u305f\u3081\u306e\u4fbf\u5229\u6a5f\u80fd\u304cWINDOW<\/code>\u53e5\u3067\u3059\u3002\u8a18\u8ff0\u3059\u308b\u4f4d\u7f6e\u306fFROM<\/code>\u53e5\u3084WHERE<\/code>\u53e5\u306e\u5f8c\u3002WINDOW w AS (...)<\/code>\u306e\u3088\u3046\u306b\u5b9a\u7fa9\u306b\u540d\u524d\u3092\u4ed8\u3051\u3001SELECT<\/code>\u53e5\u304b\u3089\u306fOVER w<\/code>\u306e\u3088\u3046\u306b\u30b7\u30f3\u30d7\u30eb\u306a\u540d\u524d\u3067\u547c\u3073\u51fa\u3057\u307e\u3059\u3002<\/p>\n
                      ✅ Point 3: WITH<\/code>\u53e5\u306f\u300c\u30c6\u30fc\u30d6\u30eb\u306e\u518d\u5229\u7528\u300d<\/h3>\n
                      WINDOW<\/code>\u53e5\u3068\u6df7\u540c\u3057\u304c\u3061\u3067\u3059\u304c\u3001WITH<\/code>\u53e5\u304c\u518d\u5229\u7528\u3059\u308b\u306e\u306f\u300c\u30c6\u30fc\u30d6\u30eb\uff08SELECT<\/code>\u6587\u306e\u5b9f\u884c\u7d50\u679c\uff09\u300d\u305d\u306e\u3082\u306e<\/strong>\u3067\u3059\u3002SQL\u5168\u4f53\u306e\u53ef\u8aad\u6027\u3092\u4e0a\u3052\u308b\u305f\u3081\u306e\u5f37\u529b\u306a\u6a5f\u80fd\u3067\u3001\u8a18\u8ff0\u3059\u308b\u4f4d\u7f6e\u306f\u5fc5\u305aSQL\u6587\u306e\u5148\u982d<\/strong>\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
                      \u3053\u306e3\u3064\u306e\u95a2\u4fc2\u6027\u306f\u300cWITH<\/code>\u53e5\u3067\u6e96\u5099\u3057\u305f\u30c6\u30fc\u30d6\u30eb\u3092\u4f7f\u3044\u3001WINDOW<\/code>\u53e5\u3067\u5b9a\u7fa9\u3057\u305f\u8a08\u7b97\u30eb\u30fc\u30eb\u3092\u3001SELECT<\/code>\u53e5\u306e\u4e2d\u306eOVER<\/code>\u53e5\u304c\u547c\u3073\u51fa\u3057\u3066\u5b9f\u884c\u3059\u308b\u300d\u3068\u30a4\u30e1\u30fc\u30b8\u3059\u308b\u3068\u3001\u5168\u4f53\u50cf\u304c\u63b4\u307f\u3084\u3059\u304f\u306a\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n
                      \u8a66\u9a13\u5bfe\u7b56\u30e1\u30e2\u2502\u5fdc\u7528\u60c5\u5831\u30fbDB\u30b9\u30da\u30b7\u30e3\u30ea\u30b9\u30c8\u3067\u72d9\u308f\u308c\u308b\u983b\u51fa\u30d1\u30bf\u30fc\u30f3<\/h2>\n
                      \u3053\u308c\u307e\u3067\u5b66\u3093\u3067\u304d\u305f\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u306f\u3001\u5fdc\u7528\u60c5\u5831\u6280\u8853\u8005\u8a66\u9a13\uff08AP\uff09\u3084\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30b9\u30da\u30b7\u30e3\u30ea\u30b9\u30c8\u8a66\u9a13\uff08DB\uff09\u306e\u5348\u5f8c\u554f\u984c\u3001\u7279\u306b\u9577\u6587SQL\u306e\u8aad\u89e3\u554f\u984c\u3067\u983b\u51fa\u306e\u30c6\u30fc\u30de\u3067\u3059\u3002GROUP BY<\/code>\u3060\u3051\u3067\u306f\u5b9f\u73fe\u3067\u304d\u306a\u3044\u8907\u96d1\u306a\u96c6\u8a08\u3084\u9806\u4f4d\u4ed8\u3051\u304c\u53ef\u80fd\u306a\u305f\u3081\u3001\u53d7\u9a13\u8005\u306eSQL\u306b\u5bfe\u3059\u308b\u6df1\u3044\u7406\u89e3\u5ea6\u3092\u8a66\u3059\u4e0a\u3067\u683c\u597d\u306e\u984c\u6750\u3060\u304b\u3089\u3067\u3059\u3002<\/p>\n
                      \u3053\u3053\u3067\u306f\u3001\u5b9f\u969b\u306e\u8a66\u9a13\u3067\u3069\u306e\u3088\u3046\u306a\u70b9\u304c\u72d9\u308f\u308c\u3084\u3059\u3044\u306e\u304b\u3001\u5bfe\u7b56\u306e\u30dd\u30a4\u30f3\u30c8\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n
                      \u983b\u51fa\u51fa\u984c\u30d1\u30bf\u30fc\u30f33\u9078<\/h3>\n
                      \u30d1\u30bf\u30fc\u30f31\uff1a\u300cOVER<\/code>\u53e5\u306e\u4e2d\u8eab\u300d\u3092\u554f\u3046\u554f\u984c<\/h4>\n
                      \u6700\u3082\u738b\u9053\u306a\u306e\u304c\u3001\u554f\u984c\u6587\u3067\u793a\u3055\u308c\u305f\u8981\u4ef6\uff08\u4f8b\uff1a\u300c\u5404\u652f\u5e97\u306b\u304a\u3044\u3066\u3001\u53d6\u6271\u5546\u54c1\u306e\u4fa1\u683c\u304c\u9ad8\u3044\u9806\u306b\u793e\u5185\u7ba1\u7406\u30b3\u30fc\u30c9\u3092\u4ed8\u4e0e\u3059\u308b\u300d\uff09\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306b\u3001OVER(PARTITION BY ??? ORDER BY ???)<\/code>\u306e???<\/code>\u90e8\u5206\u306b\u3069\u306e\u5217\u540d\u304c\u5165\u308b\u304b\u3092\u7b54\u3048\u3055\u305b\u308b\u554f\u984c\u3067\u3059\u3002
                      \n\u300c\uff5e\u3054\u3068\u306b\u300d<\/strong>\u3068\u3044\u3046\u65e5\u672c\u8a9e\u306fPARTITION BY<\/code>\u306b\u3001\u300c\uff5e\u306e\u9806\u3067\u300d<\/strong>\u306fORDER BY<\/code>\u306b\u3001\u305d\u308c\u305e\u308c\u5bfe\u5fdc\u3057\u307e\u3059\u3002\u3053\u306e\u7ffb\u8a33\u3092\u7d20\u65e9\u304f\u6b63\u78ba\u306b\u884c\u3048\u308b\u304b\u304c\u9375\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n
                      \u30d1\u30bf\u30fc\u30f32\uff1a\u300c\u69cb\u6587\u306e\u6b63\u3057\u3055\u300d\u3092\u554f\u3046\u554f\u984c<\/h4>\n
                      \u8907\u6570\u306eSQL\u6587\u306e\u9078\u629e\u80a2\u306e\u4e2d\u304b\u3089\u3001\u6587\u6cd5\u7684\u306b\u6b63\u3057\u3044\u3082\u306e\u3092\u4e00\u3064\u9078\u3070\u305b\u308b\u5f62\u5f0f\u306e\u554f\u984c\u3067\u3059\u3002\u3053\u306e\u30bf\u30a4\u30d7\u306e\u554f\u984c\u3067\u306f\u3001\u672c\u8a18\u4e8b\u3067\u89e3\u8aac\u3057\u305f\u300cSQL\u306e\u8a18\u8ff0\u9806\u5e8f\u300d\u306e\u77e5\u8b58\u304c\u305d\u306e\u307e\u307e\u6b66\u5668\u306b\u306a\u308a\u307e\u3059\u3002
                      \n\u4f8b\u3048\u3070\u3001WINDOW<\/code>\u53e5\u304cGROUP BY<\/code>\u53e5\u3088\u308a\u524d\u306b\u8a18\u8ff0\u3055\u308c\u3066\u3044\u305f\u308a\u3001WITH<\/code>\u53e5\u304cSELECT<\/code>\u6587\u306e\u9014\u4e2d\u306b\u767b\u5834\u3057\u305f\u308a\u3059\u308b\u9078\u629e\u80a2\u306f\u3001\u5185\u5bb9\u3092\u8a73\u3057\u304f\u8aad\u307e\u306a\u304f\u3066\u3082\u69cb\u6587\u30a8\u30e9\u30fc\u3068\u3057\u3066\u77ac\u6642\u306b\u9664\u5916\u3067\u304d\u307e\u3059\u3002<\/p>\n
                      \u30d1\u30bf\u30fc\u30f33\uff1a\u300cGROUP BY<\/code>\u3068\u306e\u9055\u3044\u300d\u3092\u554f\u3046\u554f\u984c<\/h4>\n
                      \u8a2d\u554f\u304c\u8981\u6c42\u3057\u3066\u3044\u308b\u6700\u7d42\u7684\u306a\u30a2\u30a6\u30c8\u30d7\u30c3\u30c8\u306e\u5f62\u5f0f\u304b\u3089\u3001GROUP BY<\/code>\u3068\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u306e\u3069\u3061\u3089\u3092\u4f7f\u3046\u3079\u304d\u304b\u3092\u5224\u65ad\u3055\u305b\u308b\u554f\u984c\u3067\u3059\u3002
                      \n\u300c\u5168\u793e\u54e1\u306e\u30ea\u30b9\u30c8\u306b\u3001\u5404\u793e\u54e1\u304c\u6240\u5c5e\u3059\u308b\u90e8\u7f72\u306e\u5e73\u5747\u5e74\u9f62\u3092”\u4f75\u8a18”\u3059\u308b\u300d<\/strong>\u306e\u3088\u3046\u306b\u3001\u5143\u306e\u884c\u60c5\u5831\u3092\u6b8b\u3059\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u306f\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u3067\u3059\u3002\u4e00\u65b9\u3067\u3001\u300c\u90e8\u7f72\u3054\u3068\u306e\u5e73\u5747\u5e74\u9f62\u30ea\u30b9\u30c8\u3092\u4f5c\u6210\u3059\u308b\u300d<\/strong>\u306e\u3088\u3046\u306b\u3001\u7d50\u679c\u3092\u96c6\u7d04\u30fb\u8981\u7d04\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u306fGROUP BY<\/code>\u304c\u9069\u5207\u3067\u3059\u3002\u3053\u306e\u9055\u3044\u3092\u898b\u629c\u304f\u529b\u304c\u8a66\u3055\u308c\u307e\u3059\u3002<\/p>\n
                      \u9577\u6587SQL\u8aad\u89e3\u306e\u30b3\u30c4<\/h3>\n
                      \u8a66\u9a13\u672c\u756a\u3067\u9577\u304f\u8907\u96d1\u306aSQL\u306b\u76f4\u9762\u3057\u3066\u3082\u3001\u6c7a\u3057\u3066\u7126\u3089\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u307e\u305a\u306fWITH<\/code>\u3001FROM<\/code>\u3001WHERE<\/code>\u3001SELECT<\/code>\u3068\u3044\u3063\u305f\u5927\u304d\u306a\u69cb\u6587\u306e\u30d6\u30ed\u30c3\u30af\u3054\u3068\u306b\u3001\u4f55\u304c\u884c\u308f\u308c\u3066\u3044\u308b\u304b\u3092\u628a\u63e1\u3059\u308b\u306e\u304c\u9244\u5247\u3067\u3059\u3002
                      \n\u7279\u306b\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u304c\u51fa\u3066\u304d\u305f\u3089\u3001\u300cSELECT<\/code> \u2192 FROM<\/code> \u2192 WINDOW<\/code> \u2192 ORDER BY<\/code>\u300d\u3068\u3044\u3046\u57fa\u672c\u69cb\u9020\u3092\u5e38\u306b\u5ff5\u982d\u306b\u7f6e\u304d\u3001\u4e00\u3064\u3072\u3068\u3064\u306e\u53e5\u304c\u6301\u3064\u5f79\u5272\u3092\u51b7\u9759\u306b\u5f53\u3066\u306f\u3081\u3066\u3044\u304f\u3053\u3068\u3067\u3001\u5fc5\u305a\u6b63\u3057\u304f\u51e6\u7406\u3092\u8ffd\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
                      SQL\u3092\u5b66\u7fd2\u3057\u3066\u3044\u308b\u3068\u3001\u591a\u304f\u306e\u4eba\u304c\u300c\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u300d\u306e\u58c1\u306b\u7a81\u304d\u5f53\u305f\u308a\u307e\u3059\u3002\u300cOVER\u53e5\u3063\u3066\u4f55\u306e\u305f\u3081\u306b\u3042\u308b\u306e\uff1f\u300d\u300cWINDOW\u53e5\u3068WITH\u53e5\u306f\u3069\u3046\u9055\u3046\u306e\uff1f\u300d\u3068\u3044\u3063\u305f\u7591\u554f\u304b\u3089\u3001PARTITION BY\u3084O … <\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","columnck":"","stmeta_robots":"index, follow","st_titlewords":"","st_title_extra":"","st_keywords":"","st_description":"","st_display_ad_mark":"","st_display_ad_mark_hide":"","textcopyck":"","st_copyright":"","st_copyurl":"","eyecatch_set":"","st_youtube_url":"","st_youtube_eyecatch":"","headerwidget_set":"","updatewidget_set":"","kanrenwidget_set":"","ikkatuwidget_set":"","koukoku_set":"","auto_adsense_koukoku_set":"","st_redirect":"","st_redirect_url_as_canonical":"","st_redirect_pvm_do_not_track":"","post_data_updatewidget_set":"","st_post_header_under_bg":"","st_twitter_tag":"","affinger_note":"","rankdisplayck":"","st_head_code":"","st_footer_code":"","st_post_header_under_code":"","_st_toc_override":false,"_st_toc_settings":[]},"categories":[3],"tags":[6],"class_list":["post-6172","post","type-post","status-publish","format-standard","hentry","category-ipa","tag-6"],"_links":{"self":[{"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/posts\/6172","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/comments?post=6172"}],"version-history":[{"count":0,"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/posts\/6172\/revisions"}],"wp:attachment":[{"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/media?parent=6172"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/categories?post=6172"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/tags?post=6172"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}