{"id":1905,"date":"2020-10-12T20:10:41","date_gmt":"2020-10-12T11:10:41","guid":{"rendered":"http:\/\/advanceadvance.net\/?p=1905"},"modified":"2020-10-13T14:29:15","modified_gmt":"2020-10-13T05:29:15","slug":"%e3%83%87%e3%83%bc%e3%82%bf%e3%83%99%e3%83%bc%e3%82%b9%ef%bc%88%e3%81%9d%e3%81%ae%ef%bc%95%ef%bc%89sql-%e5%89%af%e5%95%8f%e5%90%88%e3%81%9b","status":"publish","type":"post","link":"https:\/\/advanceadvance.net\/?p=1905","title":{"rendered":"\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\uff08\u305d\u306e\uff15\uff09SQL \u526f\u554f\u5408\u305b"},"content":{"rendered":"\n

SQL\u3092\u5b66\u3076\u306b\u3042\u305f\u3063\u3066\u6700\u521d\u306e\u95a2\u9580\u304cGROUP BY\u53e5\u3060\u3068\u3059\u308b\u3068\u3001\u305d\u306e\u6b21\u306b\u95a2\u9580\u306f\u526f\u554f\u5408\u305b<\/strong>\uff08\u30b5\u30d6\u30af\u30a8\u30ea<\/strong>\uff09\u3067\u3042\u308b\u3002<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u56f3\u306e\u901a\u308a\u3001\u526f\u554f\u5408\u305b\u3068\u306f\u30ab\u30c3\u30b3\u3092\u7528\u3044\u3066\u554f\u5408\u305b\u6587\u304c\u5165\u308c\u5b50\u306e\u5f62\u5f0f\u306b\u306a\u3063\u305f\u3082\u306e\u3067\u3042\u308b\u3002<\/p>\n\n\n\n

\u4eca\u56de\u306f\u3001\u3053\u306e\u526f\u554f\u5408\u305b<\/strong>\u3068\u76f8\u95a2\u526f\u554f\u5408\u305b<\/strong>\u306b\u3064\u3044\u3066\u89b3\u3066\u307f\u3088\u3046\u3002<\/p>\n\n\n\n

\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000<\/p>\n\n\n\n

\u30fb\u526f\u554f\u5408\u305b<\/h4>\n\n\n\n

\u526f\u554f\u5408\u305b\u306f\u4e3b\u554f\u5408\u305b\u306e\u524d\u306b\u5b9f\u884c\u3055\u308c\u3001\u305d\u306e\u5b9f\u884c\u7d50\u679c\u306f\u4e3b\u306bWHERE\u53e5\u306e\u6761\u4ef6\u306b\u4f7f\u7528\u3055\u308c\u308b\u3002<\/p>\n\n\n\n

\u6570\u5b66\u3067\u30012\u2716\ufe0f(4\uff0b5)\u3068\u3044\u3046\u8a08\u7b97\u304c\u3042\u308b\u3068\u304d\u3001\u30ab\u30c3\u30b3\u5185\u306e4\uff0b5\u304c\u5148\u306b\u8a08\u7b97\u3055\u308c\u308b\u304c\u3001\u305d\u308c\u3068\u540c\u3058\u8981\u9818\u3067\u526f\u554f\u5408\u305b\u3092\u5148\u306b\u51e6\u7406\u3059\u308b\u306e\u3067\u3042\u308b\u3002<\/p>\n\n\n\n

\u793e\u54e1\u756a\u53f7<\/td>\u6c0f\u540d<\/td>\u57fa\u672c\u7d66<\/td>\u90e8\u7f72<\/td><\/tr>
0001<\/td>\u5ddd\u7530<\/td>500,000<\/td>\u6cd5\u4eba\u7a0e<\/td><\/tr>
0002<\/td>\u4f50\u85e4<\/td>600,000<\/td>\u6240\u5f97\u7a0e<\/td><\/tr>
0003<\/td>\u6e21\u8fba<\/td>500,000<\/td>\u6cd5\u4eba\u7a0e<\/td><\/tr><\/tbody><\/table>
\u793e\u54e1<\/figcaption><\/figure>\n\n\n\n

\u3053\u306e\u8868\u304b\u3089\u3001\u793e\u54e1\u304c\uff12\u540d\u4ee5\u4e0a\u3044\u308b\u90e8\u7f72\u306b\u6240\u5c5e\u3059\u308b\u793e\u54e1\u306e\u6c0f\u540d\u3092\u4e00\u89a7\u3059\u308bSELECT\u6587\u3092\u5b9f\u884c\u3059\u308b\u3002<\/p>\n\n\n\n

SELECT \u6c0f\u540d<\/p>\n\n\n\n

FROM \u793e\u54e1<\/p>\n\n\n\n

WHERE \u90e8\u7f72 IN (SELECT \u90e8\u7f72<\/p>\n\n\n\n

\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000 FROM \u793e\u54e1<\/p>\n\n\n\n

\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000 GROUP BY \u90e8\u7f72<\/p>\n\n\n\n

\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000 HAVING COUNT(*)>=2 )<\/p>\n\n\n\n

\u3053\u306eSELECT\u6587\u3060\u3068\u3001\u307e\u305a\u30ab\u30c3\u30b3\u5185\u304b\u308d\u5b9f\u884c\u3055\u308c\u3001\u305d\u306e\u7d50\u679c\u306b\u57fa\u3044\u3066\u5916\u5074\u304c\u5b9f\u884c\u3055\u308c\u308b\u306e\u3067\u3042\u308b\u3002<\/p>\n\n\n\n

\u5217\u540d(\u3053\u306e\u5834\u5408\u306f\u90e8\u7f72)IN(\u526f\u554f\u5408\u305b)\u3067\u3001\u5217\u306e\u5024\u304c\u526f\u554f\u5408\u305b\u7d50\u679c\u306e\u3044\u305a\u308c\u304b\u306b\u4e00\u81f4\u3059\u308b\u3063\u3068\u3044\u3046\u3053\u3068\u3092\u610f\u5473\u3057\u3001\u305d\u308c\u304cWHERE\u53e5\u306b\u3088\u308a\u305d\u306e\u7d50\u679c\u306b\u5408\u81f4\u3059\u308b\u884c\u3092\u9078\u629e\u3059\u308b\u3002<\/p>\n\n\n\n

\u30ab\u30c3\u30b3\u5185\u306e\u51e6\u7406\u306b\u3088\u308a\u3001\u884c\u6570\u304c\uff12\u4ee5\u4e0a\u3042\u308b\u90e8\u7f72(\u3053\u306e\u5834\u5408\u306f\u6cd5\u4eba\u7a0e)\u306e\u307f\u62bd\u51fa\u3055\u308c\u3001\u305d\u306e\u90e8\u7f72\u306e\u3042\u308b\u884c\u304c\u9078\u629e\u3055\u308c\u3001\u6c0f\u540d\u3067\u5c04\u5f71\u3055\u308c\u3066\u3001\u6b21\u306e\u7d50\u679c\u3092\u5f97\u308b\u3002<\/p>\n\n\n\n

\u6c0f\u540d<\/td><\/tr>
\u5ddd\u7530<\/td><\/tr>
\u6e21\u8fba<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

IN\u3067\u306f\u306a\u304f\u3001NOT IN \u306b\u3059\u308b\u3068\u4e00\u81f4\u3057\u306a\u3044\u884c\u304c\u9078\u629e\u3055\u308c\u308b\u3002(\u3053\u306e\u5834\u5408\u306f\u6240\u5f97\u7a0e)<\/p>\n\n\n\n

\u7d50\u679c\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3002<\/p>\n\n\n\n

\u6c0f\u540d<\/td><\/tr>
\u4f50\u85e4<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u526f\u554f\u5408\u305b\u306fWHERE\u53e5\u3067\u884c\u306e\u9078\u629e\u3092\u3059\u308b\u969b\u306e\u6761\u4ef6\u306e\u8a2d\u5b9a\u306b\u4f7f\u308f\u308c\u308b\u3053\u3068\u304c\u591a\u3044\u3002<\/p>\n\n\n\n

\u526f\u554f\u5408\u305b\u3067\u6307\u5b9a\u3057\u305f\u8868\u3088\u308a\u6761\u4ef6\u306b\u3042\u3046\u884c\u3092\u9078\u629e\u3057\u3001SELECT\u3067\u5217\u3092\u5c04\u5f71\u3057\u305f\u7d50\u679c\u3092\u3001IN\u306a\u3089\u5408\u81f4\u3059\u308b\u884c\u3092\u3001NOT IN\u306a\u3089\u5408\u81f4\u3057\u306a\u3044\u884c\u3092\u9078\u629e\u3059\u3057\u3001\u4e3b\u554f\u5408\u305b\u306eSELECT\u3067\u5c04\u5f71\u3059\u308b\u308f\u3051\u3060\u3002<\/p>\n\n\n\n

\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000<\/p>\n\n\n\n

\u30fb\u76f8\u95a2\u526f\u554f\u5408\u305b<\/h4>\n\n\n\n

\u526f\u554f\u5408\u305b\u3060\u3068\u3001\u30ab\u30c3\u30b3\u5185\u306e\u3059\u3079\u3066\u306e\u51e6\u7406\u7d42\u4e86\u5f8c\u306bWHERE\u53e5\u306e\u9078\u629e\u304c\u5b9f\u884c\u3055\u308c\u308b\u304c\u3001\u76f8\u95a2\u526f\u554f\u5408\u305b<\/strong>\u3068\u3044\u3046\u306e\u306f\u3001\u4e3b\u554f\u5408\u305b\u306e\u5217\u3092\u526f\u554f\u5408\u305b\u5185\u3067\u53c2\u7167\u3057\u3066\u3044\u304f\u65b9\u6cd5\u3060\u3002<\/p>\n\n\n\n

\u793e\u54e1\u756a\u53f7<\/td>\u6c0f\u540d<\/td>\u57fa\u672c\u7d66<\/td>\u90e8\u7f72\u30b3\u30fc\u30c9<\/td><\/tr>
0001<\/td>\u5ddd\u7530<\/td>500,000<\/td>HZ<\/td><\/tr>
0002<\/td>\u4f50\u85e4<\/td>550,000<\/td>SZ<\/td><\/tr>
0003<\/td>\u6e21\u8fba<\/td>450,000<\/td>HZ<\/td><\/tr>
0004<\/td>\u6728\u5c71<\/td>400,000<\/td>SZ<\/td><\/tr><\/tbody><\/table>
\u793e\u54e1\u8868<\/figcaption><\/figure>\n\n\n\n
\u90e8\u7f72\u30b3\u30fc\u30c9<\/td>\u90e8\u7f72\u540d<\/td>\u90e8\u7f72\u9577\u793e\u54e1\u756a\u53f7<\/td><\/tr>
HZ<\/td>\u6cd5\u4eba\u7a0e<\/td>0001<\/td><\/tr>
SZ<\/td>\u6240\u5f97\u7a0e<\/td>0002
<\/td><\/tr><\/tbody><\/table>
\u90e8\u7f72\u8868<\/figcaption><\/figure>\n\n\n\n

\u3053\u308c\u3089\u4e8c\u3064\u306e\u8868\u3092\u7528\u3044\u3066\u6b21\u306eSQL\u6587\u3092\u5b9f\u884c\u3059\u308b\u3002<\/p>\n\n\n\n

SELECT \u6c0f\u540d<\/p>\n\n\n\n

FROM \u793e\u54e1<\/p>\n\n\n\n

WHERE EXISTS (SELECT \uff0a<\/p>\n\n\n\n

\u3000\u3000\u3000\u3000\u3000\u3000FROM \u90e8\u7f72<\/p>\n\n\n\n

\u3000\u3000\u3000\u3000\u3000\u3000WHERE \u90e8\u7f72.\u90e8\u7f72\u9577\u793e\u54e1\u756a\u53f7\uff1d\u793e\u54e1.\u793e\u54e1\u756a\u53f7<\/p>\n\n\n\n

\u3053\u306e\u5834\u5408\u3060\u3068\u3001\u30ab\u30c3\u30b3\u5185\u304b\u3089\u6700\u521d\u306b\u51e6\u7406\u3055\u308c\u308b\u304c\u3001\u526f\u554f\u5408\u305b\u3068\u306f\u5fae\u5999\u306b\u7570\u306a\u3063\u3066\u3044\u308b\u3002<\/p>\n\n\n\n

\u307e\u305a\u30ab\u30c3\u30b3\u5185\u306e\u90e8\u7f72\u8868\u306b\u304a\u3044\u3066\u90e8\u7f72\u9577\u756a\u53f7\u3068\u793e\u54e1\u8868\u306e\u793e\u54e1\u756a\u53f7\u304c\u4e00\u81f4\u3059\u308b\u793e\u54e1\u8868\u306e\u884c\u304c\u5b58\u5728\u3059\u308c\u3070\u3001\u305d\u306e\u884c\u3092\u9078\u629e\u3059\u308b<\/strong>\u3002\uff08\u771f\u3092\u8fd4\u3059\u3002\u5b58\u5728\u3057\u306a\u3044\u3068\u507d\u3092\u8fd4\u3059\u3002\u507d\u3060\u3068\u62bd\u51fa\u5bfe\u8c61\u304c\u7121\u3044\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308b\u306e\u3060\uff09<\/p>\n\n\n\n

\u30ab\u30c3\u30b3\u5185\u306e\u6761\u4ef6\u3092\u6e80\u305f\u3059\u793e\u54e1\u8868\u306e\u884c\u304c\u9078\u629e\u3055\u308c\u308b\u3068\u3001<\/p>\n\n\n\n

\u793e\u54e1\u756a\u53f7<\/td>\u6c0f\u540d<\/td>\u57fa\u672c\u7d66<\/td>\u90e8\u7f72\u30b3\u30fc\u30c9<\/td><\/tr>
0001<\/td>\u5ddd\u7530<\/td>500,000<\/td>HZ<\/td><\/tr>
0002<\/td>\u4f50\u85e4<\/td>550,000<\/td>SZ<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u3053\u308c\u306b\u4e3b\u554f\u5408\u305b\u306eSELECT\u53e5\u3092\u5c04\u5f71\u3059\u308b\u3068\u3001<\/p>\n\n\n\n

\u6c0f\u540d<\/td><\/tr>
\u5ddd\u7530<\/td><\/tr>
\u4f50\u85e4<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u7d50\u679c\u3068\u3057\u3066\u62bd\u51fa\u3055\u308c\u308b\u306e\u306f\u4e0a\u56f3\u3067\u3042\u308b\u3002<\/p>\n\n\n\n

\u306a\u304a\u3001EXISTS\u306e\u4ee3\u308f\u308a\u306b NOT EXISTS \u3092\u4f7f\u7528\u3059\u308b\u3068\u30ab\u30c3\u30b3\u5185\u306e\u6761\u4ef6\u306b\u4e00\u81f4\u3057\u306a\u3044\u884c\u304c\u9078\u629e\u3055\u308c\u5c04\u5f71\u3055\u308c\u308b\u308f\u3051\u3060\u304b\u3089\u3001<\/p>\n\n\n\n

\u6c0f\u540d<\/td><\/tr>
\u6e21\u8fba<\/td><\/tr>
\u6728\u5c71<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u304c\u62bd\u51fa\u3055\u308c\u308b\u3002<\/p>\n\n\n\n

\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000<\/p>\n\n\n\n

\u30fb\u526f\u554f\u5408\u305b\u3068\u76f8\u95a2\u526f\u554f\u5408\u305b\u306e\u9055\u3044<\/h4>\n\n\n\n

\u526f\u554f\u5408\u305b\u3068\u76f8\u95a2\u526f\u554f\u5408\u305b\u306e\u4e8c\u8005\u306b\u3064\u3044\u3066\u7c21\u5358\u306b\u89b3\u3066\u304d\u305f\u304c\u3001\u4e21\u8005\u306e\u9055\u3044\u3068\u306f\u4f55\u306a\u306e\u3060\u308d\u3046\uff1f<\/p>\n\n\n\n

\u526f\u554f\u5408\u305b\u306e\u4f8b\u3067\u306f\u3001\u793e\u54e1\u304c\uff12\u540d\u4ee5\u4e0a\u3044\u308b\u90e8\u7f72\u306e\u793e\u54e1\u6c0f\u540d\u3092\u62bd\u51fa\u3057\u3001\u76f8\u95a2\u526f\u554f\u5408\u305b\u3067\u306f\u90e8\u7f72\u9577\u3067\u3042\u308b\u793e\u54e1\u6c0f\u540d\u3092\u62bd\u51fa\u3057\u3066\u3044\u308b\u3002<\/p>\n\n\n\n

\u76f8\u95a2\u526f\u554f\u5408\u305b\u306f\u3001\u3088\u308a\u5c0f\u5206\u3051\u3057\u305f\u30b0\u30eb\u30fc\u30d7\u5185\u3067\u306e\u6bd4\u8f03<\/strong>\u306b\u7528\u3044\u3089\u308c\u308b\u306e\u3067\u3042\u308b\u3002<\/p>\n\n\n\n

\u8981\u3059\u308b\u306b\u8868\u5168\u4f53\u3067\u306f\u306a\u304f\u3001\u8868\u306e\u4e00\u90e8\u306b\u9650\u5b9a\u3057\u305f\u6bd4\u8f03\u3092\u884c\u3044\u305f\u3044\u3068\u304d\u306b\u4f7f\u7528\u3055\u308c\u308b\u306e\u3060\u3002<\/p>\n\n\n\n

\u307e\u3068\u3081\u308b\u3068\u3001<\/p>\n\n\n\n

\u5217\u540d IN (\u526f\u554f\u5408\u305b\u6587):\u526f\u554f\u5408\u305b\u306e\u7d50\u679c\u3068\u4e00\u81f4\u3059\u308b\u5217\u5024\u304c\u5b58\u5728\u3059\u308b\u304b\u3092\u8abf\u3079\u308b\u3002<\/p>\n\n\n\n

EXISTS (\u526f\u554f\u5408\u305b\u6587):\u526f\u554f\u5408\u305b\u7d50\u679c\u304c\uff11\u884c\u3067\u3082\u5b58\u5728\u3059\u308b\u304b\u3092\u8abf\u3079\u308b\u3002<\/p>\n\n\n\n

\u306a\u304b\u306a\u304b\u5206\u304b\u308a\u306b\u304f\u3044\u306e\u3067\u3001\u3053\u308c\u306b\u3064\u3044\u3066\u306f\u5b9f\u969b\u306b\u30c8\u30e9\u30a4\u3057\u3066\u307f\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u304b\u306a\u3041\u3068\u601d\u3046\u3002<\/p>\n\n\n\n

\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000<\/p>\n\n\n\n

\u30fb\u5f8c\u8a18<\/h4>\n\n\n\n

\u526f\u554f\u5408\u305b\u3068\u76f8\u95a2\u526f\u554f\u5408\u305b\u306f\u3001\u51e6\u7406\u306e\u904e\u7a0b\u304c\u30a4\u30e1\u30fc\u30b8\u3067\u304d\u308c\u3070\u3088\u3044\u306e\u3060\u304c\u3001\u305d\u306e\u57df\u306b\u5230\u9054\u3059\u308b\u305f\u3081\u306b\u306f\u76f8\u5f53\u8a13\u7df4\u304c\u5fc5\u8981\u306b\u306a\u308a\u305d\u3046\u3060\u3002<\/p>\n\n\n\n

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