{"id":5833,"date":"2023-09-29T19:33:07","date_gmt":"2023-09-29T10:33:07","guid":{"rendered":"https:\/\/techmania.jp\/blog\/?p=5833"},"modified":"2026-03-19T20:33:57","modified_gmt":"2026-03-19T11:33:57","slug":"sql-union","status":"publish","type":"post","link":"https:\/\/techmania.jp\/blog\/sql-union\/","title":{"rendered":"\u3010SQL\u3011UNION\u53e5\u3068\u306f\uff1f\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3001UNION ALL\u3068\u306e\u9055\u3044\u3084\u5fdc\u7528\u4f8b\u3092\u5fb9\u5e95\u89e3\u8aac"},"content":{"rendered":"

\u300cUNION\u300d\u53e5\u306fSELECT\u306e<\/span>\u7d50\u679c\u3092\u7d71\u5408\u3059\u308b\u547d\u4ee4\u3067\u3001\u4e3b\u306bSELECT\u6587\u3068\u4f75\u7528\u3057\u3066\u8907\u6570\u306e\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u62bd\u51fa\u3057\u305f\u30c7\u30fc\u30bf\u7d50\u679c\u3092\u7d71\u5408\u3059\u308b\u306e\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/span><\/span><\/p>\n

\u672c\u8a18<\/span><\/span>\u4e8b\u3067\u306f\u3001\u300cUNION\u300d\u53e5\u306e\u57fa\u790e\u77e5\u8b58\u304b\u3089\u300cUNION ALL\u300d\u3068\u306e\u9055\u3044\u3001WHERE\u53e5\u3084ORDER BY\u53e5\u306a\u3069\u3068\u306e\u4f75\u7528\u65b9\u6cd5\u3092\u4e2d\u5fc3\u306b\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n

UNION\u3068\u306f<\/h2>\n\n\n

SQL\u306e\u300cUNION\u300d\u53e5\u3068\u306f\u3001\u8907\u6570\u306e\u30c6\u30fc\u30d6\u30eb\u30c7\u30fc\u30bf\u3092\u7d71\u5408\u3057\u3066\u4e00\u3064\u306e\u30c6\u30fc\u30d6\u30eb\u306b\u3059\u308b\u30af\u30a8\u30ea\u3067\u3059\u3002\u8907\u6570\u306e\u300cSELECT\u300d\u6587\u3092UNION\u53e5\u3067\u3064\u306a\u3052\u308b\u3053\u3068\u3067\u3001\u305d\u308c\u305e\u308c\u306eSELECT\u6587\u3067\u62bd\u51fa\u3057\u305f\u7d50\u679c\u30bb\u30c3\u30c8\u3092\u4e00\u3064\u306b\u307e\u3068\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n\n\n

\u3010\u57fa\u672c\u69cb\u6587\u3011<\/strong><\/p>\n\n\n

SELECT \u30ab\u30e9\u30e0\u540d FROM \u30c6\u30fc\u30d6\u30ebA UNION SELECT \u30ab\u30e9\u30e0\u540d FROM \u30c6\u30fc\u30d6\u30ebB;<\/code><\/pre><\/div>\n\n\n\n
UNION\u3068UNION ALL\u306e\u9055\u3044<\/h2>\n\n\n
UNION\u306e\u307b\u304b\u306b\u3001ALL\u3068\u3044\u3046\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4ed8\u3051\u305fUNION ALL\u3068\u3044\u3046\u30af\u30a8\u30ea\u3082\u3088\u304f\u4f7f\u308f\u308c\u307e\u3059\u304c\u3001\u3053\u306e2\u3064\u306f\u51e6\u7406\u306e\u9055\u3044\u306b\u3088\u3063\u3066\u4f7f\u3044\u5206\u3051\u3089\u308c\u307e\u3059\u3002<\/p>\n
\u7d50\u8ad6\u304b\u3089\u8ff0\u3079\u308b\u3068\u3001\u4e21\u8005\u306e\u9055\u3044\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n
\n
UNION\uff1a\u91cd\u8907\u3057\u305f\u884c\u3092\u542b\u3081\u306a\u3044\uff08\u91cd\u8907\u304c\u3042\u308b\u5834\u5408\u306f\u9664\u5916\u3057\u3066\u7d71\u5408\u3059\u308b\uff09<\/p>\n
UNION ALL\uff1a\u91cd\u8907\u3057\u305f\u884c\u3092\u542b\u3081\u308b\uff08\u91cd\u8907\u304c\u3042\u308b\u5834\u5408\u3082\u3059\u3079\u3066\u7d71\u5408\u3059\u308b\uff09<\/p>\n<\/div>\n
\u3010UNION\u3011<\/strong><\/p>\n\n\n\"\u91cd\u8907\u3057\u3066\u3044\u308b\u884c\u306f\u9664\u5916\u3055\u308c\u308b\"\n\n\n
\u3010UNION ALL\u3011<\/strong><\/p>\n\n\n\"\u91cd\u8907\u3057\u3066\u3044\u308b\u884c\u3082\u51fa\u529b\u3055\u308c\u308b\"\n\n\n
UNION\u53e5\u306f\u7d50\u679c\u30bb\u30c3\u30c8\u5185\u306e\u91cd\u8907\u3059\u308b\u30c7\u30fc\u30bf\u3092\u6392\u9664\u3057\u307e\u3059\u304c\u3001UNION ALL\u3092\u4f7f\u7528\u3059\u308b\u3068\u91cd\u8907\u3057\u305f\u30c7\u30fc\u30bf\u3082\u7d50\u679c\u306b\u542b\u307e\u308c\u307e\u3059\u3002\u4ee5\u4e0b\u304c\u57fa\u672c\u7684\u306a\u30af\u30a8\u30ea\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u3010UNION\u3011<\/strong><\/p>\n\n\n
-- \u91cd\u8907\u3059\u308b\u30c7\u30fc\u30bf\u3092\u6392\u9664\u3057\u3066\u7d50\u5408\nSELECT \u30ab\u30e9\u30e0\u540d FROM \u30c6\u30fc\u30d6\u30ebA UNION SELECT \u30ab\u30e9\u30e0\u540d FROM \u30c6\u30fc\u30d6\u30ebB;<\/code><\/pre><\/div>\n\n\n
\u3010UNION ALL\u3011<\/strong><\/p>\n\n\n
-- \u91cd\u8907\u3059\u308b\u30c7\u30fc\u30bf\u3082\u7d50\u5408\u306b\u542b\u3081\u308b\nSELECT \u30ab\u30e9\u30e0\u540d FROM \u30c6\u30fc\u30d6\u30ebA UNION ALL SELECT \u30ab\u30e9\u30e0\u540d FROM \u30c6\u30fc\u30d6\u30ebB;<\/code><\/pre><\/div>\n\n\n
\u3053\u306e\u64cd\u4f5c\u3092\u884c\u3046\u969b\u3001\u7d50\u5408\u3059\u308b\u5404SELECT\u6587\u306e\u30ab\u30e9\u30e0\u6570\u3001\u9806\u5e8f\u3001\u30c7\u30fc\u30bf\u578b\u304c\u4e00\u81f4\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u5fc5\u8981\u306a\u6761\u4ef6\u3068\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u7570\u306a\u308b\u30c6\u30fc\u30d6\u30eb\u3084\u30af\u30a8\u30ea\u304b\u3089\u306e\u30c7\u30fc\u30bf\u3092\u3001\u6574\u5408\u6027\u3092\u4fdd\u3061\u306a\u304c\u3089\u4e00\u3064\u306e\u7d50\u679c\u30bb\u30c3\u30c8\u3068\u3057\u3066\u307e\u3068\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/span><\/p>\n\n\n
\u3042\u306a\u305f\u306e\u3054\u5e0c\u671b\u306b\u6cbf\u3063\u305f\u6848\u4ef6\u304c\u5fc5\u305a<\/span>\u898b\u3064\u304b\u308a\u307e\u3059
\u3010\u30d5\u30ea\u30fc\u30e9\u30f3\u30b9\u5411\u3051\u3011\u9ad8\u53ce\u5165<\/span>\u30fb<\/span>\u597d\u5f85\u9047<\/span>\u306e\u6848\u4ef6\u3092\u3054\u7d39\u4ecb<\/span>\r\n<\/p><\/a>\r\n<\/div>\r\n\r\n
\"TECH<\/a>\r\n<\/div>\r\n\r\n
\r\n
\u226b\u307e\u305a\u306f\u7c21\u535860<\/span>\u79d2\u3067\u7121\u6599\u304a\u554f\u3044\u5408\u308f\u305b<\/span>\u304b\u3089\u226a\r\n<\/p><\/a>\r\n<\/div>\n\n\n\n
UNION\u306e\u4f7f\u3044\u65b9<\/h2>\n\n\n\n
UNION\u3092\u9069\u5207\u306b\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u7570\u306a\u308b\u30c6\u30fc\u30d6\u30eb\u9593\u3067\u5171\u901a\u306e\u5c5e\u6027\u3092\u6301\u3064\u30c7\u30fc\u30bf\u3092\u52b9\u7387\u7684\u306b\u62bd\u51fa\u30fb\u7d71\u5408\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u300c\u30c6\u30fc\u30d6\u30eb1\u300d\u300c\u30c6\u30fc\u30d6\u30eb2\u300d\u3092\u4f8b\u306b\u3001\u5177\u4f53\u7684\u306a\u4f7f\u7528\u65b9\u6cd5\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n
\u30c6\u30fc\u30d6\u30eb1<\/strong><\/p>\n\n\n\n
+------------+--------+---------------------+--------+\n| name       | route  | saved_date          | price  |\n+------------+--------+---------------------+--------+\n| \u4f50\u85e4       | A      | 2023-04-01 17:29:31 | 2100   |\n| \u9234\u6728       | B      | 2023-04-05 13:10:45 | 3500   |\n+------------+--------+---------------------+--------+<\/code><\/pre>\n\n\n\n
\u30c6\u30fc\u30d6\u30eb2<\/strong><\/p>\n\n\n\n
+------------+--------+---------------------+--------+\n| name       | route  | saved_              | price  |\n+------------+--------+---------------------+--------+\n| \u52a0\u85e4       | A      | 2023-04-19 11:37:01 | 1300   |\n| \u4f50\u85e4       | A      | 2023-04-01 17:29:31 | 2100   |\n+------------+--------+---------------------+--------+<\/code><\/pre>\n\n\n\n
UNION<\/h3>\n\n\n\n
UNION\u3092\u7528\u3044\u308b\u3053\u3068\u3067\u3001\u8907\u6570\u306e\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u30c7\u30fc\u30bf\u3092\u62bd\u51fa\u3057\u3001\u91cd\u8907\u3059\u308b\u884c\u30921\u884c\u3068\u3057\u3066\u8868\u793a\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30c7\u30fc\u30bf\u306e\u4e00\u89a7\u6027\u304c\u5411\u4e0a\u3057\u3001\u91cd\u8907\u3092\u907f\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
-- \u30c6\u30fc\u30d6\u30eb1\u3068\u30c6\u30fc\u30d6\u30eb2\u304b\u3089\u30c7\u30fc\u30bf\u3092\u9078\u629e\u3057\u3001\u91cd\u8907\u3092\u6392\u9664\u3057\u3066\u7d50\u5408\nSELECT name, route, saved_date, price FROM \u30c6\u30fc\u30d6\u30eb1\nUNION\nSELECT name, route, saved_date, price FROM \u30c6\u30fc\u30d6\u30eb2;<\/code><\/pre><\/div>\n\n\n\n\"\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\n\n\n\n
\u7d50\u679c\uff1a<\/p>\n\n\n\n
+------------+--------+---------------------+--------+\n| \u30e6\u30fc\u30b6\u540d   | \u30eb\u30fc\u30c8 | \u8cfc\u5165\u65e5              | \u8cfc\u5165\u984d |\n+------------+--------+---------------------+--------+\n| \u4f50\u85e4       | A      | 2023-04-01 17:29:31 | 2100   |\n| \u9234\u6728       | B      | 2023-04-05 13:10:45 | 3500   |\n| \u52a0\u85e4       | A      | 2023-04-19 11:37:01 | 1300   |\n+------------+--------+---------------------+--------+<\/code><\/pre>\n\n\n\n
UNION ALL<\/h3>\n\n\n\n
\u4e00\u65b9\u3001UNION ALL\u306fUNION\u3068\u7570\u306a\u308a\u3001\u91cd\u8907\u3059\u308b\u884c\u3082\u305d\u306e\u307e\u307e\u8868\u793a\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30c7\u30fc\u30bf\u306e\u5b8c\u5168\u306a\u7d71\u5408\u304c\u53ef\u80fd\u3068\u306a\u308a\u3001\u3069\u306e\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u3069\u306e\u3088\u3046\u306a\u30c7\u30fc\u30bf\u304c\u62bd\u51fa\u3055\u308c\u305f\u304b\u304c\u4e00\u76ee\u77ad\u7136\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
-- \u30c6\u30fc\u30d6\u30eb1\u3068\u30c6\u30fc\u30d6\u30eb2\u304b\u3089\u30c7\u30fc\u30bf\u3092\u9078\u629e\u3057\u3001\u91cd\u8907\u3082\u542b\u3081\u3066\u7d50\u5408\nSELECT name, route, saved_date, price FROM \u30c6\u30fc\u30d6\u30eb1\nUNION ALL\nSELECT name, route, saved_date, price FROM \u30c6\u30fc\u30d6\u30eb2;<\/code><\/pre><\/div>\n\n\n\n\"\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\n\n\n\n
\u7d50\u679c\uff1a<\/p>\n\n\n\n
+------------+--------+---------------------+--------+\n| \u30e6\u30fc\u30b6\u540d   | \u30eb\u30fc\u30c8 | \u8cfc\u5165\u65e5              | \u8cfc\u5165\u984d |\n+------------+--------+---------------------+--------+\n| \u4f50\u85e4<\/strong>       | A<\/strong>      | 2023-04-01 17:29:31<\/strong> | 2100<\/strong>   |\n| \u9234\u6728       | B      | 2023-04-05 13:10:45 | 3500   |\n| \u52a0\u85e4       | A      | 2023-04-19 11:37:01 | 1300   |\n| \u4f50\u85e4<\/strong>       | A<\/strong>      | 2023-04-01 17:29:31<\/strong> | 2100<\/strong>   |\n+------------+--------+---------------------+--------+\n<\/code><\/pre>\n\n\n\n
UNION\u306e\u5fdc\u7528<\/h2>\n\n\n\n
\u7d9a\u3044\u3066\u3001UNION\u3092\u7528\u3044\u308b\u969b\u306b\u4e00\u7dd2\u306b\u6d3b\u7528\u3067\u304d\u308bWHERE\u53e5\u3084ORDER BY\u53e5\u306e\u4f7f\u7528\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
WHERE\u53e5\u3068\u7d44\u307f\u5408\u308f\u305b\u308b<\/h3>\n\n\n
WHERE\u53e5<\/a>\u3092UNION\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u7570\u306a\u308b\u6761\u4ef6\u306b\u57fa\u3065\u3044\u3066\u30c7\u30fc\u30bf\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3057\u3001\u7279\u5b9a\u306e\u57fa\u6e96\u3092\u6e80\u305f\u3059\u30c7\u30fc\u30bf\u306e\u307f\u3092\u62bd\u51fa\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n
WHERE\u53e5\u306f\u3001\u305d\u308c\u305e\u308c\u306eSELECT\u6587\u306e\u306a\u304b\u3067\u500b\u5225\u306b\u9069\u7528\u3055\u308c\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u7570\u306a\u308b\u30c6\u30fc\u30d6\u30eb\u307e\u305f\u306f\u540c\u4e00\u30c6\u30fc\u30d6\u30eb\u306b\u5bfe\u3057\u3066\u7570\u306a\u308b\u6761\u4ef6\u3092\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
SELECT \u5217\u540d FROM \u30c6\u30fc\u30d6\u30eb\u540d1 WHERE \u6761\u4ef61\nUNION\nSELECT \u5217\u540d FROM \u30c6\u30fc\u30d6\u30eb\u540d2 WHERE \u6761\u4ef62;<\/code><\/pre><\/div>\n\n\n\n
ORDER BY\u53e5\u3068\u7d44\u307f\u5408\u308f\u305b\u308b<\/h3>\n\n\n
ORDER BY\u53e5<\/a>\u306f\u3001UNION\u3092\u4f7f\u7528\u3057\u3066\u7d50\u5408\u3055\u308c\u305f\u7d50\u679c\u306e\u4e26\u3073\u9806\u3092\u5236\u5fa1\u3057\u307e\u3059\u3002<\/p>\n\n\n
ORDER BY\u306f\u5168\u4f53\u306e\u7d50\u679c\u30bb\u30c3\u30c8\u306b\u5bfe\u3057\u3066\u9069\u5fdc\u3055\u308c\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u5404SELECT\u6587\u306e\u306a\u304b\u306bORDER BY\u3092\u8a18\u8ff0\u3059\u308b\u3068\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
SELECT \u5217\u540d FROM \u30c6\u30fc\u30d6\u30eb\u540d1\nUNION\nSELECT \u5217\u540d FROM \u30c6\u30fc\u30d6\u30eb\u540d2\nORDER BY \u5217\u540d [ASC|DESC];<\/code><\/pre><\/div>\n\n\n\n
\u3010\u88dc\u8db3\u3011UNION\u3068JOIN\u306e\u9055\u3044\u306f\uff1f<\/h2>\n\n\n\n
UNION\u3068\u4f3c\u305f\u6a5f\u80fd\u3092\u6301\u3064\u3082\u306e\u3068\u3057\u3066\u3001JOIN\u53e5\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u3061\u3089\u3082\u8907\u6570\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u7d50\u5408\u3059\u308b\u3068\u3044\u3046\u6a5f\u80fd\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u3053\u306e2\u3064\u306b\u306f\u5927\u304d\u306a\u9055\u3044\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
UNION: SELECT\u306e\u7d50\u679c\u3092\u7d71\u5408\u3059\u308b<\/h3>\n\n\n\n
UNION\u306f\u30012\u3064\u306e\u30c6\u30fc\u30d6\u30eb\u9593\u3067\u5b9f\u884c\u3055\u308c\u305fSELECT\u306e\u7d50\u679c\u3092\u4e00\u3064\u306b\u7d71\u5408\u3059\u308b\u30af\u30a8\u30ea\u3067\u3059\u3002SELECT\u30af\u30a8\u30ea\u306e\u5b9f\u884c\u7d50\u679c\u3092\u7d71\u5408\u3059\u308b\u306e\u3067\u3001\u5171\u901a\u3059\u308b\u30ab\u30e9\u30e0\u306e\u30c7\u30fc\u30bf\u3092\u4e00\u3064\u306b\u307e\u3068\u3081\u308b\u3088\u3046\u306a\u7528\u9014\u306b\u5411\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
\u30a4\u30e1\u30fc\u30b8\u3068\u3057\u3066\u306f\u3001\u6700\u521d\u306b\u8aac\u660e\u3057\u305f\u969b\u306e\u56f3\u306e\u3088\u3046\u306b\u7e26\u306b\u30c6\u30fc\u30d6\u30eb\u3092\u7e4b\u3052\u308b\u3088\u3046\u306a\u5f62\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
JOIN: \u30c6\u30fc\u30d6\u30eb\u9593\u306e\u30c7\u30fc\u30bf\u3092\u95a2\u9023\u4ed8\u3051\u3066\u7d50\u5408\u3059\u308b<\/h3>\n\n\n\n
JOIN\u306f\u4e21\u65b9\u306e\u30c6\u30fc\u30d6\u30eb\u306e\u30c7\u30fc\u30bf\u3092\u95a2\u9023\u4ed8\u3051\u3066\u30c6\u30fc\u30d6\u30eb\u3092\u7d50\u5408\u3059\u308b\u30af\u30a8\u30ea\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u5171\u901a\u3059\u308b\u30c7\u30fc\u30bf\u304c\u306a\u3051\u308c\u3070NULL\u304c\u542b\u307e\u308c\u308b\u3053\u3068\u304c\u3042\u3063\u305f\u308a\u3001\u5b9f\u884c\u7d50\u679c\u306e\u30c6\u30fc\u30d6\u30eb\u306b\u542b\u307e\u308c\u306a\u304b\u3063\u305f\u308a\u3068\u3044\u3063\u305f\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
JOIN\u306f\u8907\u6570\u306e\u30c6\u30fc\u30d6\u30eb\u9593\u3067\u95a2\u9023\u3059\u308b\u30c7\u30fc\u30bf\u3092\u7d50\u5408\u3057\u30661\u3064\u306e\u30c6\u30fc\u30d6\u30eb\u306b\u7d50\u679c\u30bb\u30c3\u30c8\u3092\u307e\u3068\u3081\u308b\u7528\u9014\u306b\u5411\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
\u30a4\u30e1\u30fc\u30b8\u3068\u3057\u3066\u306f\u3001\u30c6\u30fc\u30d6\u30eb\u3092\u6a2a\u306b\u7e4b\u3052\u308b\u3088\u3046\u306a\u5f62\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n\n\n\n\n
JOIN\u306b\u3064\u3044\u3066\u3055\u3089\u306b\u8a73\u3057\u304f\u77e5\u308a\u305f\u3044\u65b9\u306e\u305f\u3081\u306b\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u308b\u8a18\u4e8b\u304c\u3042\u308a\u307e\u3059\uff01
\u3053\u3061\u3089\u3082\u305c\u3072\u8aad\u3093\u3067\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n
\n
\u3010SQL\u5165\u9580\u3011JOIN\u3067SQL\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u7d50\u5408\u3059\u308b\uff08INNER JOIN, OUTER JOIN\uff09<\/a><\/blockquote>