{"id":1889,"date":"2020-10-09T21:09:00","date_gmt":"2020-10-09T12:09:00","guid":{"rendered":"http:\/\/advanceadvance.net\/?p=1889"},"modified":"2020-10-09T21:09:03","modified_gmt":"2020-10-09T12:09:03","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%94%ef%bc%89sql-select%e6%96%87","status":"publish","type":"post","link":"https:\/\/advanceadvance.net\/?p=1889","title":{"rendered":"\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\uff08\u305d\u306e\uff14\uff09SQL SELECT\u6587"},"content":{"rendered":"\n

\u95a2\u4fc2\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u95a2\u3059\u308b\u5404\u7a2e\u306e\u5b9a\u7fa9\u3084\u64cd\u4f5c\u3092\u884c\u3046\u305f\u3081\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u7528\u8a00\u8a9e\u3092SQL<\/strong>(Structured Query Language)\u3068\u3044\u3046\u3002<\/p>\n\n\n\n

\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u4e00\u90e8\u306e\u30c7\u30fc\u30bf\u304c\u5fc5\u8981\u3067\u3001\u305d\u308c\u3092\u62bd\u51fa\u3059\u308b\u4f5c\u696d\u3092\u554f\u5408\u305b(\u30af\u30a8\u30ea)<\/strong>\u3068\u547c\u3076\u3002<\/p>\n\n\n\n

\u3053\u306e\u554f\u5408\u305b\u306e\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u306e\u304cSELECT\u6587<\/strong>\u3067\u3042\u308b\u3002<\/p>\n\n\n\n

\u4eca\u56de\u306f\u3001\u3053\u306eSELECT\u6587\u306e\u57fa\u672c\u7684\u69cb\u9020\u306b\u3064\u3044\u3066\u89b3\u3066\u307f\u305f\u3044\u3002<\/p>\n\n\n\n

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

\u30fbSELECT\u6587\u306e\u57fa\u672c<\/h4>\n\n\n\n

\u307e\u305a\u306fSELECT\u6587\u306e\u66f8\u5f0f\u3067\u3042\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\u3000<\/p>\n\n\n\n

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

SELECT <\u5217\u540d\u30ea\u30b9\u30c8> \u5c04\u5f71\u3059\u308b\u5217\u3092\u6307\u5b9a<\/p>\n\n\n\n

FROM <\u8868\u540d\u30ea\u30b9\u30c8> \u554f\u5408\u305b\u5bfe\u8c61\u306e\u8868\u3092\u6307\u5b9a<\/p>\n\n\n\n

WERER <\u6761\u4ef6\u5f0f> \u691c\u7d22\u6761\u4ef6\u6307\u5b9a<\/p>\n\n\n\n

GROUP BY <\u5217\u540d\u30ea\u30b9\u30c8> \u30b0\u30eb\u30fc\u30d7\u5316\u3059\u308b\u5217\u3092\u6307\u5b9a<\/p>\n\n\n\n

HAVING <\u6761\u4ef6\u5f0f> \u30b0\u30eb\u30fc\u30d7\u306b\u5bfe\u3059\u308b\u62bd\u51fa\u6761\u4ef6\u6307\u5b9a<\/p>\n\n\n\n

ORDER BY <\u5217\u540d\u30ea\u30b9\u30c8> \u6574\u5217\u9806\u6307\u5b9a<\/p>\n\n\n\n

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

\u3053\u306eSELECT\u6587\u3060\u304c\u3001\u5b9f\u306f\u4e0a\u304b\u3089\u9806\u306b\u8aad\u3080\u306e\u3067\u306f\u306a\u3044\u3002<\/p>\n\n\n\n

\u4ee5\u4e0b\u306e\u8868(\u793e\u54e1\u8868)\u3092\u7528\u3044\u3066\u89e3\u8aac\u3057\u3088\u3046\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>300,000<\/td>\u6cd5\u4eba\u7a0e<\/td><\/tr>
0002<\/td>\u4f50\u85e4<\/td>350,000<\/td>\u6240\u5f97\u7a0e<\/td><\/tr>
0003<\/td>\u6728\u5c71<\/td>320,000<\/td>\u6240\u5f97\u7a0e<\/td><\/tr>
0004<\/td>\u8c37\u539f<\/td>380,000<\/td>\u7a0e\u52d9\u8a34\u8a1f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u307e\u305a\u306f\u3053\u306e\u8868\u3088\u308a\u3001\u57fa\u672c\u7d6635\u4e07\u5186\u672a\u6e80\u306e\u793e\u54e1\u306e\u6c0f\u540d\u3068\u57fa\u672c\u7d66\u3092\u629c\u304d\u51fa\u3057\u3066\u307f\u308b\u3002<\/p>\n\n\n\n

SELECT \u6c0f\u540d,\u57fa\u672c\u7d66<\/p>\n\n\n\n

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

WHERE \u57fa\u672c\u7d66<350000<\/p>\n\n\n\n

\u3068\u8a18\u8ff0\u3059\u308b\u3002<\/p>\n\n\n\n

\u307e\u305aFROM\u53e5\u3067\u793e\u54e1\u8868\u3092\u7279\u5b9a\u3057\u3001\u6b21\u306bWHERE\u53e5\u3067\u6761\u4ef6\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3002<\/p>\n\n\n\n

\u57fa\u672c\u7d66\u304c35\u4e07\u5186\u672a\u6e80\u3068\u3042\u308b\u306e\u3067\u3001\u305d\u308c\u306b\u5408\u81f4\u3059\u308b\u884c\u3092\u629c\u304d\u51fa\u3059\u3002\u9078\u629e<\/strong>\u3092\u3059\u308b\u308f\u3051\u3067\u3042\u308b\u3002<\/p>\n\n\n\n

\u3053\u306e\u5834\u5408\u306f\u30010001\u30680003\u3060\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>300,000<\/td>\u6cd5\u4eba\u7a0e<\/td><\/tr>
0003<\/td>\u6728\u5c71<\/td>320,000<\/td>\u6240\u5f97\u7a0e<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u9078\u629e\u306b\u3088\u308a\u4e0a\u56f3\u304c\u629c\u304d\u51fa\u3055\u308c\u308b\u3002<\/p>\n\n\n\n

\u305d\u3057\u3066\u6700\u5f8c\u306bSELECT\u6587\u3067\u6307\u5b9a\u3057\u305f\u5217\u3092\u629c\u304d\u51fa\u3059\u306e\u3067\u3042\u308b\u3002\u3059\u306a\u308f\u3061\u5c04\u5f71<\/strong>\u3059\u308b\u308f\u3051\u3060\u3002<\/p>\n\n\n\n

\u6307\u5b9a\u306e\u5217\u306f\u3001\u6c0f\u540d\u3068\u57fa\u672c\u7d66\u3060\u304b\u3089\u3001<\/p>\n\n\n\n

\u6c0f\u540d<\/td>\u57fa\u672c\u7d66<\/td><\/tr>
\u5ddd\u7530<\/td>300,000<\/td><\/tr>
\u6728\u5c71<\/td>320,000<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u4e0a\u8a18\u306e\u8868\u304c\u554f\u5408\u305b\u7d50\u679c\u3068\u306a\u308b\u3002<\/p>\n\n\n\n

FROM\u53e5\u3067\u8868\u3092\u9078\u3073\u51fa\u3057\u3001WHERE\u53e5\u3067\u6761\u4ef6\u306e\u5408\u3046\u884c\u3092\u9078\u629e\u3057\u3001SELECT\u53e5\u3067\u6307\u5b9a\u3057\u305f\u5217\u3092\u629c\u304d\u51fa\u3059\u3001\u3068\u3044\u3046\u306e\u304c\u624b\u9806\u3060\u3002<\/p>\n\n\n\n

\u6700\u521d\u306e\u5b9f\u969b\u306b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u683c\u7d0d\u3057\u3066\u3044\u308b\u8868\u3092\u5b9f\u8868<\/strong>\u3068\u3044\u3044\u3001\u4eca\u56de\u306e\u4f5c\u696d\u306e\u3088\u3046\u306b\u7279\u5b9a\u306e\u884c\u3068\u5217\u3092\u62bd\u51fa\u3057\u305f\u4eee\u60f3\u306e\u8868\u3092\u30d3\u30e5\u30fc\u8868<\/strong>\u3068\u3044\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

\u4eca\u5ea6\u306f\u9055\u3046\u6761\u4ef6\u3092\u8a2d\u5b9a\u3057\u3066\u307f\u3088\u3046\u3002<\/p>\n\n\n\n

SELECT \uff0a<\/p>\n\n\n\n

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

WHERE \u793e\u54e1\u756a\u53f7\uff1d`0001`<\/p>\n\n\n\n

\uff0a\u306f\u3059\u3079\u3066\u306e\u5217\u3092\u793a\u3059\u3002\u793e\u54e1\u756a\u53f7\u3001\u6c0f\u540d\u3001\u57fa\u672c\u7d66\u3001\u90e8\u7f72\u30b3\u30fc\u30c9\u306e\u5168\u90e8\u3068\u3044\u3046\u3053\u3068\u3067\u3042\u308b\u3002<\/p>\n\n\n\n

FROM\u53e5\u3067\u793e\u54e1\u8868\u3092\u9078\u3073\u51fa\u3057\u3001WHERE\u53e5\u3067\u793e\u54e1\u756a\u53f7\u304c0001\u306e\u884c\u3092\u9078\u629e\u3057\u3001SELECT\u6587\u3067\u3059\u3079\u3066\u306e\u5217\u3092\u5c04\u5f71\u3059\u308b\u3068\u3001<\/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>300,000<\/td>\u6cd5\u4eba\u7a0e<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u304c\u51fa\u6765\u3066\u304f\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\u3000<\/p>\n\n\n\n

\u307e\u305f\u5217\u540d\u3092\u5909\u66f4\u3057\u3066\u629c\u304d\u51fa\u3059\u3053\u3068\u3082\u3067\u304d\u308b\u3002<\/p>\n\n\n\n

SELECT \u793e\u54e1\u756a\u53f7,\u57fa\u672c\u7d66*2 AS \u30dc\u30fc\u30ca\u30b9<\/p>\n\n\n\n

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

AS\u53e5\u306f\u5225\u540d\u3092\u3064\u3051\u308b\u3068\u304d\u306b\u4f7f\u7528\u3055\u308c\u308b\u3002<\/p>\n\n\n\n

\u3053\u306e\u4f8b\u3060\u3068\u57fa\u672c\u7d66\u3092\uff12\u500d\u3057\u305f\u3082\u306e\uff08*\u306f\u639b\u3051\u7b97\u3092\u793a\u3059\uff09\u3092\u30dc\u30fc\u30ca\u30b9\u3068\u6539\u540d\u3059\u308b\u3002<\/p>\n\n\n\n

\u307e\u305fWHERE\u53e5\u3092\u7701\u7565\u3059\u308b\u3068\u3001\u3059\u3079\u3066\u306e\u884c\u304c\u5bfe\u8c61\u3068\u306a\u308b\u3002<\/p>\n\n\n\n

\u3053\u306eSELECT\u6587\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001<\/p>\n\n\n\n

\u793e\u54e1\u756a\u53f7<\/td>\u30dc\u30fc\u30ca\u30b9<\/td><\/tr>
0001<\/td>600,000<\/td><\/tr>
0002<\/td>700,000<\/td><\/tr>
0003<\/td>640,000<\/td><\/tr>
0004<\/td>760,000<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u3068\u62bd\u51fa\u3055\u308c\u308b\u3002<\/p>\n\n\n\n

\u30dc\u30fc\u30ca\u30b9\u5217\u3068\u91d1\u984d\u304c\uff12\u500d\u3055\u308c\u3066\u3044\u308b\u306e\u304c\u30dd\u30a4\u30f3\u30c8\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\u3000\u3000<\/p>\n\n\n\n

\u30fb\u8868\u306e\u7d50\u5408<\/h4>\n\n\n\n

SELECT\u6587\u3067\u8868\u3092\u7d50\u5408\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n\n\n\n

\u4e8c\u901a\u308a\u306e\u65b9\u6cd5\u304c\u3042\u308b\u3002<\/p>\n\n\n\n

\u2460FROM\u53e5\u306b\u8868\u540d\u3092\u5217\u8a18\u3057\u3001WHERE\u53e5\u306b\u7d50\u5408\u6761\u4ef6\u3092\u8a18\u3059<\/strong><\/p>\n\n\n\n

FROM\u53e5\u306b\u7d50\u5408\u3057\u305f\u3044\u8868\u540d\u3092\u5217\u8a18\u3057\u3001WHERE\u53e5\u306b\u7d50\u5408\u6761\u4ef6\u3092\u8a18\u8ff0\u3059\u308b\u3068\u3001\u7d50\u5408\u7d50\u679c\u304c\u5f97\u3089\u308c\u308b\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>300,000<\/td>HZ<\/td><\/tr>
0002<\/td>\u4f50\u85e4<\/td>350,000<\/td>SZ<\/td><\/tr>
0003<\/td>\u6728\u5c71<\/td>320,000<\/td>SZ<\/td><\/tr>
0004<\/td>\u8c37\u539f<\/td>380,000<\/td>ZS<\/td><\/tr><\/tbody><\/table>
\u793e\u54e1\u8868<\/figcaption><\/figure>\n\n\n\n
\u90e8\u7f72\u30b3\u30fc\u30c9<\/td>\u90e8\u7f72\u540d<\/td><\/tr>
HZ<\/td>\u6cd5\u4eba\u7a0e<\/td><\/tr>
SZ<\/td>\u6240\u5f97\u7a0e<\/td><\/tr>
ZS<\/td>\u7a0e\u52d9\u8a34\u8a1f<\/td><\/tr><\/tbody><\/table>
\u90e8\u7f72\u8868<\/figcaption><\/figure>\n\n\n\n

\u3053\u306e\uff12\u3064\u306e\u8868\u3092\u4ee5\u4e0b\u306eSELECT\u6587\u3067\u7d50\u5408\u3059\u308b\u3002<\/p>\n\n\n\n

SELECT \u793e\u54e1.\u793e\u54e1\u756a\u53f7,\u793e\u54e1.\u6c0f\u540d,\u90e8\u7f72.\u90e8\u7f72\u540d<\/p>\n\n\n\n

FROM \u793e\u54e1,\u90e8\u7f72<\/p>\n\n\n\n

WHERE \u793e\u54e1.\u90e8\u7f72\u30b3\u30fc\u30c9=\u90e8\u7f72.\u90e8\u7f72\u30b3\u30fc\u30c9<\/p>\n\n\n\n

\u7d50\u5408\u3057\u3066\u3067\u304d\u308b\u8868\u306f\u3001\u793e\u54e1\u8868\u306e\u793e\u54e1\u756a\u53f7\u3068\u6c0f\u540d\u3001\u90e8\u7f72\u8868\u306e\u90e8\u7f72\u540d\u304c\u5217\u540d\u3068\u3057\u3066\u62bd\u51fa\u3055\u308c\u308b\u3002<\/p>\n\n\n\n

\u305d\u3057\u3066\u793e\u54e1\u8868\u3068\u90e8\u7f72\u8868\u306e\u90e8\u7f72\u30b3\u30fc\u30c9\u304c\u7b49\u3057\u3044\u6761\u4ef6\u3067\u7d50\u5408\u3059\u308b\u3002<\/p>\n\n\n\n

\u793e\u54e1
\u793e\u54e1\u756a\u53f7<\/td>		\u793e\u54e1
\u6c0f\u540d<\/td>		\u793e\u54e1
\u57fa\u672c\u7d66<\/td>		\u793e\u54e1
\u90e8\u7f72\u30b3\u30fc\u30c9<\/td>		\u90e8\u7f72
\u90e8\u7f72\u30b3\u30fc\u30c9<\/td>		\u90e8\u7f72
\u90e8\u7f72\u540d<\/td><\/tr>
0001<\/td>\u5ddd\u7530<\/td>300,000<\/td>HZ<\/td>HZ<\/td>\u6cd5\u4eba\u7a0e<\/td><\/tr>
0002<\/td>\u4f50\u85e4<\/td>350,000<\/td>SZ<\/td>SZ<\/td>\u6240\u5f97\u7a0e<\/td><\/tr>
0003<\/td>\u6728\u5c71<\/td>320,000<\/td>SZ<\/td>SZ<\/td>\u6240\u5f97\u7a0e<\/td><\/tr>
0004<\/td>\u8c37\u539f<\/td>380,000<\/td>ZS<\/td>ZS<\/td>\u7a0e\u52d9\u8a34\u8a1f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u793e\u54e1\u8868\u3068\u90e8\u7f72\u8868\u306e\u90e8\u7f72\u30b3\u30fc\u30c9\u306f\u91cd\u8907\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u4e00\u3064\u306b\u307e\u3068\u3081\u3066\u8868\u793a\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\u3000\u3000<\/p>\n\n\n\n

\u2461JOIN\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u7528\u3044\u308b<\/strong><\/p>\n\n\n\n

\u7d50\u5408\u306f\u5225\u306e\u51e6\u7406\u65b9\u6cd5\u3082\u3042\u308b\u3002<\/p>\n\n\n\n

FROM\u53e5\u3067JOIN<\/strong>\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u7528\u3044\u308b\u306e\u3067\u3042\u308b\u3002<\/p>\n\n\n\n

FROM\u88681 JOINH\u88682 ON\uff1c\u7d50\u5408\u6761\u4ef6\uff1e<\/p>\n\n\n\n

\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3059\u308b\u3068\u3001\u53cc\u65b9\u306e\u8868\u3092\u7d50\u5408\u6761\u4ef6\u306b\u5f93\u3044\u7d50\u5408\u3059\u308b\u3002<\/p>\n\n\n\n

\u4e0a\u56f3\u306e\u793e\u54e1\u8868\u3068\u90e8\u7f72\u8868\u304b\u3089\u540c\u3058\u7d50\u679c\u3092\u5f97\u308b\u5834\u5408\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3042\u308b\u3002<\/p>\n\n\n\n

FROM \u793e\u54e1 JOIN \u90e8\u7f72 ON \u793e\u54e1.\u90e8\u7f72\u30b3\u30fc\u30c9\uff1d\u90e8\u7f72.\u90e8\u7f72\u30b3\u30fc\u30c9<\/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<\/p>\n\n\n\n

\u30fb\u30b0\u30eb\u30fc\u30d7\u5316<\/h4>\n\n\n\n

SQL\u3092\u5b66\u3076\u306b\u3042\u305f\u308a\u3001\u6700\u521d\u306e\u95a2\u9580\u304cGROUP BY\u53e5<\/strong>\u3067\u3042\u308b\u3002<\/p>\n\n\n\n

\u3053\u308c\u306f\u3001\u5f97\u3089\u308c\u305f\u884c\u3092\u3042\u308b\u5217\u306e\u5024\u3054\u3068\u306b\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u3001\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306e\u5408\u8a08\u3084\u5e73\u5747\u5024\u3092\u8a08\u7b97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\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>\u5ca1\u7530<\/td>500,000<\/td>\u6b74\u53f2<\/td><\/tr>
0002<\/td>\u52a0\u6cbb<\/td>700,000<\/td>\u6b74\u53f2<\/td><\/tr>
0003<\/td>\u5175\u982d<\/td>450,000<\/td>\u7a0e\u91d1<\/td><\/tr>
0004<\/td>\u5927\u6751<\/td>600,000<\/td>\u7a0e\u91d1<\/td><\/tr><\/tbody><\/table>
\u793e\u54e1<\/figcaption><\/figure>\n\n\n\n

\u3053\u306e\u8868\u306b\u6b21\u306bSQL\u6587\u3092\u5b9f\u884c\u3059\u308b\u3002<\/p>\n\n\n\n

SELECT \u90e8\u7f72,AVG(\u57fa\u672c\u7d66)AS\u5e73\u5747\u7d66\u4e0e<\/p>\n\n\n\n

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

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

\u5e73\u5747\u5024\u3092\u6c42\u3081\u308b\u96c6\u5408\u95a2\u6570<\/strong>\u3001AVG<\/strong>\u3092\u4f7f\u7528\u3057\u3066\u57fa\u672c\u7d66\u306e\u5e73\u5747\u5024\u3092\u7b97\u51fa\u3057\u3001\u5e73\u5747\u7d66\u4e0e\u3068\u6539\u540d\u3057\u3066\u5217\u8868\u793a\u3059\u308b\u3002<\/p>\n\n\n\n

GROUP BY\u53e5\u3067\u3001\u90e8\u7f72\u3067\u30b0\u30eb\u30fc\u30d7\u5316\u3059\u308b\u3002<\/p>\n\n\n\n

SQL\u306e\u5b9f\u884c\u9806\u5e8f\u306f\u3001FROM\u2192GROUP BY\u2192SELECT\u306a\u306e\u3067\u3001<\/p>\n\n\n\n

0001<\/td>\u5ca1\u7530<\/td>500,000<\/td>\u6b74\u53f2<\/td><\/tr>
0002<\/td>\u52a0\u6cbb<\/td>700,000<\/td>\u6b74\u53f2<\/td><\/tr><\/tbody><\/table>
\u6b74\u53f2\u30b0\u30eb\u30fc\u30d7<\/figcaption><\/figure>\n\n\n\n
0003<\/td>\u5175\u982d<\/td>450,000<\/td>\u7a0e\u91d1<\/td><\/tr>
0004<\/td>\u5927\u6751<\/td>600,000<\/td>\u7a0e\u91d1<\/td><\/tr><\/tbody><\/table>
\u7a0e\u91d1\u30b0\u30eb\u30fc\u30d7<\/figcaption><\/figure>\n\n\n\n

\u306e\u3088\u3046\u306b\u30b0\u30eb\u30fc\u30d7\u5316\u3055\u308c\u308b\u3002<\/p>\n\n\n\n

SELECT\u53e5\u306e\u96c6\u5408\u95a2\u6570\u306b\u3088\u308a\u3001\u305d\u308c\u305e\u308c\u306e\u57fa\u672c\u7d66\u306e\u5e73\u5747\u5024\u304c\u8a08\u7b97\u3055\u308c\u308b\u3002<\/p>\n\n\n\n

\u6b74\u53f2\u30b0\u30eb\u30fc\u30d7\uff1d600,000<\/p>\n\n\n\n

\u7a0e\u91d1\u30b0\u30eb\u30fc\u30d7\uff1d525,000<\/p>\n\n\n\n

\u90e8\u7f72\u5217\u3068\u57fa\u672c\u7d66\u6539\u3081\u5e73\u5747\u7d66\u4e0e\u3067\u5c04\u5f71\u3055\u308c\u308b\u306e\u3067\u3001<\/p>\n\n\n\n

\u90e8\u7f72<\/td>\u5e73\u5747\u7d66\u4e0e<\/td><\/tr>
\u6b74\u53f2<\/td>600,000<\/td><\/tr>
\u7a0e\u91d1<\/td>525,000<\/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\u3000<\/p>\n\n\n\n

SQL\u6587\u3067\u306f\u6b21\u306e\u3088\u3046\u306a\u96c6\u5408\u95a2\u6570\u304c\u4f7f\u7528\u3067\u304d\u308b\u3002<\/p>\n\n\n\n

AVG(\u5217\u540d)=\u5e73\u5747\u5024\u3092\u6c42\u3081\u308b<\/p>\n\n\n\n

MAX(\u5217\u540d)=\u6700\u5927\u5024\u3092\u6c42\u3081\u308b<\/p>\n\n\n\n

MIN(\u5217\u540d)=\u6700\u5c0f\u5024\u3092\u6c42\u3081\u308b<\/p>\n\n\n\n

SUM(\u5217\u540d)=\u5408\u8a08\u3092\u6c42\u3081\u308b<\/p>\n\n\n\n

COUNT(\uff0a)=\u884c\u6570\u3092\u6c42\u3081\u308b<\/p>\n\n\n\n

\u96c6\u5408\u95a2\u6570COUNT\u306e\u30ab\u30c3\u30b3\u5185\u306e\uff0a\u306f\u3059\u3079\u3066\u306e\u5217\u3092\u793a\u3059\u304c\u3001\u5177\u4f53\u7684\u306a\u5217\u540d\u3092\u5165\u308c\u308b\u3053\u3068\u3082\u3067\u304d\u308b\u3002<\/p>\n\n\n\n

\u5217\u540d\u3092\u6307\u5b9a\u3057\u305f\u5834\u5408\u3001\u305d\u306e\u5217\u306e\u5024\u304cNULL\u3067\u306a\u3044\u884c\u306e\u6570\u304c\u5f97\u3089\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\u3000\u3000<\/p>\n\n\n\n

\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u305f\u884c\u304b\u3089\u7279\u5b9a\u306e\u884c\u306e\u307f\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u308b\u3002<\/p>\n\n\n\n

GROUP BY\u53e5\u306e\u76f4\u5f8c\u306bHAVING\u53e5<\/strong>\u3092\u6307\u5b9a\u3059\u308b\u3002<\/p>\n\n\n\n

\u4f8b\u3068\u3057\u3066\u3001\u793e\u54e1\u8868\u304b\u3089\uff12\u540d\u4ee5\u4e0a\u306e\u793e\u54e1\u304c\u5c5e\u3059\u308b\u90e8\u7f72\u306e\u5e73\u5747\u7d66\u4e0e\u3092\u62bd\u51fa\u3059\u308b\u305f\u3081\u306eSELECT\u6587\u3092\u6319\u3052\u3088\u3046\u3002<\/p>\n\n\n\n

SELECT \u90e8\u7f72,AVG(\u57fa\u672c\u7d66)AS \u5e73\u5747\u7d66\u4e0e<\/p>\n\n\n\n

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

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

HAVING COUNT(\uff0a)>=2<\/p>\n\n\n\n

\u793e\u54e1\u8868\u3092\u90e8\u7f72\u3067\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u3001\u305d\u306e\u30b0\u30eb\u30fc\u30d7\u306e\u3046\u3061\u884c\u6570\u304c\uff12\u500b\u4ee5\u4e0a\u3092\u9078\u629e\u3057\u3001SELECT\u53e5\u3067\u5c04\u5f71\u3059\u308b\u306e\u3067\u3042\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

\u30b0\u30eb\u30fc\u30d7\u5316\u3059\u308b\u5834\u5408\u3001\u5b88\u3089\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u30eb\u30fc\u30eb\u304c\u3042\u308b\u3002<\/p>\n\n\n\n

GROUP BY\u53e5\u306b\u306f\u3001SELECT\u53e5\u3084HAVING\u53e5\u306b\u6307\u5b9a\u3057\u305f\u96c6\u5408\u95a2\u6570\u306e\u5f15\u6570\u4ee5\u5916\u306e\u5217\u3092\u3059\u3079\u3066\u6307\u5b9a\u3059\u308b\u3001\u3068\u3044\u3046\u3053\u3068\u3067\u3042\u308b\u3002<\/p>\n\n\n\n

\u63db\u8a00\u3059\u308b\u3068\u3001\u3042\u308b\u5217\u3092SELECT\u306e\u7d50\u679c\u3084HAVING\u53e5\u306e\u6761\u4ef6\u306b\u542b\u3081\u305f\u3044\u5834\u5408\u306f\u3001\u5197\u9577\u3067\u3042\u3063\u305f\u3068\u3057\u3066\u3082\u3001\u305d\u306e\u5217\u3092GROUP by\u53e5\u306b\u6307\u5b9a\u3057\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u3068\u3044\u3046\u3053\u3068\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\u3000\u3000<\/p>\n\n\n\n

\u30fb\u6574\u5217<\/h4>\n\n\n\n

SELECT\u6587\u3067\u306f\u3001\u7d50\u679c\u306e\u5404\u884c\u304c\u3069\u3093\u306a\u9806\u5e8f\u3067\u4e26\u3076\u304b\u306f\u4fdd\u8a3c\u3055\u308c\u306a\u3044\u3002<\/p>\n\n\n\n

\u6574\u5217\u3055\u305b\u305f\u3044\u5834\u5408\u306f\u3001ORDER BY\u53e5<\/strong>\u3067\u6574\u5217\u9806\u3092\u660e\u793a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002<\/p>\n\n\n\n

ORDER BY\u53e5\u3067\u306f\u3001\u5217\u540d\u306e\u5f8c\u306bASC<\/strong>(\u6607\u9806\u3001\u5c0f\u3055\u3044\u9806\uff09\u307e\u305f\u306fDESC<\/strong>(\u964d\u9806\u3001\u5927\u304d\u3044\u9806\uff09\u3092\u6307\u5b9a\u3059\u308b\u3002<\/p>\n\n\n\n

\u3053\u308c\u3089\u3092\u7701\u7565\u3057\u305f\u3068\u304d\u306f\u3001ASC\uff08\u5c0f\u3055\u3044\u9806\uff09\u3092\u6307\u5b9a\u3057\u305f\u3082\u306e\u3068\u307f\u306a\u3055\u308c\u308b\u3002<\/p>\n\n\n\n

ORDER BY <\u5217\u540d>[ASC | DESC],<\u5217\u540d>[ASC | DESC],\u30fb\u30fb<\/p>\n\n\n\n

\u8907\u6570\u306e\u5217\u540d\u3092\u6307\u5b9a\u3057\u305f\u5834\u5408\u306f\u3001\u307e\u305a\u306f\u5148\u982d\u306b\u6307\u5b9a\u3057\u305f\u7b2c\uff11\u6574\u5217\u30ad\u30fc\u9806\u306b\u884c\u304c\u4e26\u3079\u3089\u308c\u3001\u7d9a\u3044\u3066\u7b2c\uff12\u6574\u5217\u30ad\u30fc\u3001\u7b2c\uff13\u6574\u5217\u30ad\u30fc\u306e\u9806\u306b\u6574\u5217\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\u3000<\/p>\n\n\n\n

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

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

SQL\u306e\u57fa\u672c\u4e2d\u306e\u57fa\u672c\u3092\u6982\u89b3\u3057\u305f\u304c\u3001\u3053\u308c\u306f\u7d20\u4eba\u8996\u70b9\u3067\u3082\u5965\u306e\u6df1\u3044\u4e16\u754c\u3060\u3068\u611f\u3058\u3089\u308c\u308b\u3002<\/p>\n\n\n\n

\u307e\u3060\u307e\u3060\u5e8f\u306e\u53e3\u3002<\/p>\n\n\n\n

\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u305d\u3057\u3066SQL\u306f\u77e5\u3063\u3066\u304a\u3044\u3066\u640d\u306f\u7121\u3055\u305d\u3046\u3060\u30fb\u30fb\u30fb\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"

\u95a2\u4fc2\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u95a2\u3059\u308b\u5404\u7a2e\u306e\u5b9a\u7fa9\u3084\u64cd\u4f5c\u3092\u884c\u3046\u305f\u3081\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u7528\u8a00\u8a9e\u3092SQL(Structured Query Language)\u3068\u3044\u3046\u3002 \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u4e00\u90e8\u306e\u30c7\u30fc\u30bf\u304c\u5fc5\u8981\u3067\u3001\u305d\u308c\u3092\u62bd\u51fa\u3059\u308b\u4f5c\u696d\u3092\u554f\u5408\u305b(\u30af\u30a8\u30ea)\u3068\u547c\u3076 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","footnotes":""},"categories":[14],"tags":[390,391,386,365,389,388,387,373,138],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/advanceadvance.net\/index.php?rest_route=\/wp\/v2\/posts\/1889"}],"collection":[{"href":"https:\/\/advanceadvance.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/advanceadvance.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/advanceadvance.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/advanceadvance.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1889"}],"version-history":[{"count":15,"href":"https:\/\/advanceadvance.net\/index.php?rest_route=\/wp\/v2\/posts\/1889\/revisions"}],"predecessor-version":[{"id":1904,"href":"https:\/\/advanceadvance.net\/index.php?rest_route=\/wp\/v2\/posts\/1889\/revisions\/1904"}],"wp:attachment":[{"href":"https:\/\/advanceadvance.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1889"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/advanceadvance.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1889"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/advanceadvance.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1889"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}