{"id":7544,"date":"2024-08-23T18:44:59","date_gmt":"2024-08-23T09:44:59","guid":{"rendered":"https:\/\/techmania.jp\/blog\/?p=7544"},"modified":"2025-08-22T15:22:37","modified_gmt":"2025-08-22T06:22:37","slug":"sql-substring","status":"publish","type":"post","link":"https:\/\/techmania.jp\/blog\/sql-substring\/","title":{"rendered":"\u3010SQL\u3011SUBSTRING\u3067\u30c7\u30fc\u30bf\u3092\u5207\u308a\u51fa\u3059\uff01\u4f7f\u3044\u65b9\u3084\u985e\u4f3c\u95a2\u6570\u3092\u89e3\u8aac"},"content":{"rendered":"

SUBSTRING\u306f\u6587\u5b57\u5217\u3092\u5207\u308a\u53d6\u3063\u3066\u8fd4\u3059\u95a2\u6570\u3067\u3042\u308a\u3001\u6271\u3048\u308b\u3068\u30c7\u30fc\u30bf\u306e\u62bd\u51fa\u3084\u66f4\u65b0\u304c\u697d\u306b\u306a\u308a\u307e\u3059\u3002\u672c\u8a18\u4e8b\u3067\u306f\u3001SUBSTRING\u95a2\u6570\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3084\u985e\u4f3c\u95a2\u6570\u3067\u3042\u308b\u300cLEFT\u95a2\u6570\u300d\u300cRIGHT\u95a2\u6570\u300d\u3092\u4e2d\u5fc3\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002<\/span><\/span><\/span><\/span><\/p>\n\n\n

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

SQL\u306eSUBSTRING\u3068\u306f\u6307\u5b9a\u3057\u305f\u6587\u5b57\u5217\u3092\u5207\u308a\u51fa\u3059\u95a2\u6570\u3067\u3059\u3002SUBSTRING\u306b\u306f\u300c\u6587\u5b57\u5217\u300d\u3068\u3044\u3046\u610f\u5473\u304c\u3042\u308a\u3001\u305d\u306e\u901a\u308a\u6587\u5b57\u5217\u64cd\u4f5c\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002SUBSTRING\u95a2\u6570\u3092\u6271\u3048\u308b\u3068\u30c7\u30fc\u30bf\u306e\u62bd\u51fa\u3084\u66f4\u65b0\u6642\u304c\u697d\u306b\u306a\u308b\u306a\u3069\u3001\u591a\u304f\u306e\u5834\u9762\u3067\u5f79\u7acb\u3061\u307e\u3059\u3002<\/span><\/span><\/p>\n

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

SUBSTRING(\u6587\u5b57\u5217,\u958b\u59cb\u4f4d\u7f6e,\u6587\u5b57\u6570);<\/strong><\/code><\/pre>\n\n\n
\u5404\u5f15\u6570\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n
\u7b2c\u4e00\u5f15\u6570\uff1a\u6587\u5b57\u5217<\/strong><\/p>\n
\u5207\u308a\u51fa\u3059\u6587\u5b57\u5217\u306f\u6570\u5024\u3082\u6271\u3048\u307e\u3059\u3002\u6587\u5b57\u5217\u306f\u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\uff08’\uff09\u3067\u56f2\u3044\u307e\u3059\u304c\u3001\u6570\u5024\u306b\u306f\u5fc5\u8981\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n
\u7b2c\u4e8c\u5f15\u6570\uff1a\u958b\u59cb\u4f4d\u7f6e<\/strong><\/p>\n
\u5207\u308a\u51fa\u3057\u306e\u958b\u59cb\u4f4d\u7f6e\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002SQL\u306b\u304a\u3051\u308bSUBSTRING\u3067\u306f\u307b\u304b\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3068\u7570\u306a\u308a\u3001\u5148\u982d\u4f4d\u7f6e\u306f\u300c1\u300d\u306b\u306a\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u7a2e\u985e\u306b\u3088\u3063\u3066\u306f\u8ca0\u306e\u5024\u3082\u6307\u5b9a\u3067\u304d\u3001\u305d\u306e\u5834\u5408\u306f\u672b\u5c3e\u306e\u6587\u5b57\u304b\u3089\u4f55\u756a\u76ee\u3068\u3044\u3046\u6307\u5b9a\u306b\u306a\u308a\u307e\u3059\u3002\u958b\u59cb\u4f4d\u7f6e\u306b0\u3092\u6307\u5b9a\u3057\u305f\u5834\u5408\u30011\u3092\u6307\u5b9a\u3057\u305f\u5834\u5408\u3068\u540c\u69d8\u306e\u7d50\u679c\u306b\u306a\u308a\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u3088\u3063\u3066\u306f\u4f55\u3082\u8fd4\u3055\u308c\u306a\u3044\u304b\u3001\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u3082\u3042\u308a\u307e\u3059\u3002<\/span><\/p>\n
\u7b2c\u4e09\u5f15\u6570\uff1a\u6587\u5b57\u6570<\/strong><\/p>\n
\u5207\u308a\u51fa\u3059\u6587\u5b57\u6570\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u6587\u5b57\u6570\u306f\u7701\u7565\u53ef\u80fd\u3067\u3042\u308a\u3001\u7701\u7565\u3059\u308b\u3068\u6307\u5b9a\u3057\u305f\u958b\u59cb\u4f4d\u7f6e\u304b\u3089\u6700\u5f8c\u307e\u3067\u5207\u308a\u51fa\u3055\u308c\u307e\u3059\u3002<\/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>\n<\/p><\/a>\n<\/div>\n\n
\"TECH<\/a>\n<\/div>\n\n
\n
\u226b\u307e\u305a\u306f\u7c21\u535860<\/span>\u79d2\u3067\u7121\u6599\u304a\u554f\u3044\u5408\u308f\u305b<\/span>\u304b\u3089\u226a\n<\/p><\/a>\n<\/div>\n\n\n\n
1\uff0e\u6587\u5b57\u3092\u5207\u308a\u51fa\u3059<\/h3>\n\n\n
\u305f\u3068\u3048\u3070\u3001\u300cABCDEF\u300d\u3068\u3044\u3046\u6587\u5b57\u5217\u304c\u3042\u3063\u305f\u3063\u3068\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u30672\u6587\u5b57\u76ee\u304b\u30893\u6587\u5b57\u5206\u3092\u5207\u308a\u51fa\u3057\u3066\u307f\u307e\u3059\u3002\u3059\u308b\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u3010SQL\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n
SELECT SUBSTRING('ABCDEF',2,3);<\/strong><\/code><\/pre>\n\n\n
\u6587\u5b57\u5217\u306f\u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\uff08’\uff09\u3067\u56f2\u307f\u307e\u3059\u3002<\/p>\n
\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n
BCD<\/strong><\/code><\/pre>\n\n\n
SUBSTRING\u95a2\u6570\u3067\u5207\u308a\u51fa\u3057\u305f\u7d50\u679c\u3092SELECT\u3067\u62bd\u51fa\u30fb\u8868\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u4e8c\u6587\u5b57\u76ee\u306e\u300cB\u300d\u304b\u30893\u6587\u5b57\u5206\u5207\u308a\u53d6\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n
2\uff0e\u6570\u5024\u3092\u5207\u308a\u51fa\u3059<\/h3>\n\n\n
\u4eca\u5ea6\u306f\u300c123456789\u300d\u3068\u3044\u3046\u6570\u5024\u3092\u5207\u308a\u51fa\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u30673\u6587\u5b57\u76ee\u304b\u30894\u6587\u5b57\u5206\u3092\u5207\u308a\u51fa\u3057\u3066\u307f\u307e\u3059\u3002\u3059\u308b\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u3010SQL\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n
SELECT SUBSTRING(123456789,3,4);<\/strong><\/code><\/pre>\n\n\n
\u6570\u5024\u306e\u5834\u5408\u306f\u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\uff08’\uff09\u3067\u56f2\u3080\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u305f\u3060\u3057\u3001\u6570\u5b57\u3092\u6587\u5b57\u3068\u3057\u3066\u6271\u3046\u5834\u5408\u306b\u306f\u4ed8\u3051\u307e\u3057\u3087\u3046\u3002<\/p>\n
\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n
3456<\/strong><\/code><\/pre>\n\n\n
\u4e09\u6587\u5b57\u76ee\u306e\u300c3\u300d\u304b\u30894\u6587\u5b57\u304c\u5207\u308a\u53d6\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n
2.1\uff0e\u6570\u5024\u3067\u8a08\u7b97\u3082\u53ef\u80fd<\/h3>\n\n\n
\u5207\u308a\u51fa\u3057\u305f\u6570\u5024\u3069\u3046\u3057\u3067\u8a08\u7b97\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u3010SQL\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n
SELECT SUBSTRING(123456789,1,3)+SUBSTRING(123456789,3,4);<\/strong><\/code><\/pre>\n\n\n
\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n
3579<\/strong><\/code><\/pre>\n\n\n
123+3456\u3067\u7d50\u679c\u306f3579\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n
\u3010\u6ce8\u610f\u70b9\u3011\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u3088\u3063\u3066\u95a2\u6570\u540d\u304c\u7570\u306a\u308b<\/h3>\n\n\n
SUBSTRING\u306b\u95a2\u3057\u3066\u306fRDBMS\u3084\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u3088\u3063\u3066\u95a2\u6570\u540d\u304c\u591a\u5c11\u7570\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
\u5b9f\u306f\u3001SUBSTRING\u95a2\u6570\u3092\u5229\u7528\u3067\u304d\u308b\u4e3b\u8981\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306fSQLServer\u3068MySQL\u306e\u307f\u3067\u3059\u3002\u305f\u3060\u3057\u3001\u307b\u304b\u306e\u74b0\u5883\u3067\u540c\u3058\u6a5f\u80fd\u3092\u4f7f\u3048\u306a\u3044\u304b\u3068\u3044\u3046\u3068\u305d\u3046\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002SUBSTRING\u3068\u540c\u69d8\u306e\u6a5f\u80fd\u3092\u6301\u3064\u985e\u4f3c\u95a2\u6570\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u4e8b\u524d\u306b\u30de\u30cb\u30e5\u30a2\u30eb\u3092\u53c2\u7167\u3059\u308b\u306a\u3069\u3057\u3066\u4f7f\u7528\u53ef\u80fd\u306a\u95a2\u6570\u540d\u3092\u4f7f\u7528\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n
Oracle\u306e\u5834\u5408<\/strong><\/p>\n
Oracle\u306e\u5834\u5408\u3001\u5207\u308a\u51fa\u3059\u9577\u3055\u3092\u6587\u5b57\u6570\u5358\u4f4d\u3067\u6307\u5b9a\u3059\u308b\u5834\u5408\u306f\u300cSUBSTR\u300d\u95a2\u6570\u3092\u3001\u30d0\u30a4\u30c8\u6570\u3067\u6307\u5b9a\u3059\u308b\u5834\u5408\u306f\u300cSUBSTRB\u300d\u95a2\u6570\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n
\u3010SQL\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n
SUBSTR(\u5bfe\u8c61,\u958b\u59cb\u4f4d\u7f6e,\u6587\u5b57\u6570);\nSUBSTRB(\u5bfe\u8c61,\u958b\u59cb\u4f4d\u7f6e,\u30d0\u30a4\u30c8\u6570);<\/strong><\/code><\/pre>\n\n\n
\u5bfe\u8c61\uff1a\u30ab\u30e9\u30e0\u540d\u307e\u305f\u306f\u6587\u5b57\u5217<\/p>\n
PostgreSQL\u306e\u5834\u5408<\/strong><\/p>\n
PostgreSQL\u306e\u5834\u5408\u3001\u300cSUBSTRB\u300d\u95a2\u6570\u3068\u300cSUBSTR\u300d\u95a2\u6570\u3069\u3061\u3089\u3082\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002PostgreSQL\u3067\u306f\u958b\u59cb\u4f4d\u7f6e\u306b\u8ca0\u306e\u5024\u3092\u6307\u5b9a\u3057\u3066\u3082\u3001\u672b\u5c3e\u304b\u3089\u958b\u59cb\u3055\u308c\u307e\u305b\u3093\u3002\u672b\u5c3e\u3092\u958b\u59cb\u4f4d\u7f6e\u306b\u3059\u308b\u5834\u5408\u306f\u3001LENGTH\u95a2\u6570\u3092\u5229\u7528\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n
\u3010SQL\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n
SUBSTRING(\u5bfe\u8c61 FROM \u958b\u59cb\u4f4d\u7f6e FOR \u6587\u5b57\u6570);\nSUBSTR(\u5bfe\u8c61,\u958b\u59cb\u4f4d\u7f6e,\u6587\u5b57\u6570);<\/strong><\/code><\/pre>\n\n\n
\u5bfe\u8c61\uff1a\u30ab\u30e9\u30e0\u540d\u307e\u305f\u306f\u6587\u5b57\u5217<\/p>\n\n\n
SQL Server<\/h3>\n\n\n
SQL Server\u3067\u306f\u958b\u59cb\u4f4d\u7f6e\u306b\u8ca0\u306e\u5024\u3092\u6307\u5b9a\u3057\u3066\u3082\u3001\u672b\u5c3e\u304b\u3089\u958b\u59cb\u3055\u308c\u307e\u305b\u3093\u3002\u672b\u5c3e\u3092\u958b\u59cb\u4f4d\u7f6e\u306b\u3059\u308b\u5834\u5408\u306f\u3001LENGTH\u95a2\u6570\u3092\u5229\u7528\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n
\u3010SQL\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n
SUBSTRING(\u5bfe\u8c61,\u958b\u59cb\u4f4d\u7f6e,\u6587\u5b57\u6570);<\/strong>\n<\/code><\/pre>\n\n\n
\u5bfe\u8c61\uff1a\u30ab\u30e9\u30e0\u540d\u307e\u305f\u306f\u6587\u5b57\u5217<\/p>\n\n\n
MySQL<\/h3>\n\n\n
MySQL\u3067\u306f\u958b\u59cb\u4f4d\u7f6e\u306b\u8ca0\u306e\u5024\u3092\u6307\u5b9a\u3057\u3066\u3082\u3001\u672b\u5c3e\u304b\u3089\u958b\u59cb\u3055\u308c\u307e\u305b\u3093\u3002\u672b\u5c3e\u3092\u958b\u59cb\u4f4d\u7f6e\u306b\u3059\u308b\u5834\u5408\u306f\u3001LENGTH\u95a2\u6570\u3092\u5229\u7528\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n
\u3010SQL\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n
SUBSTRING(\u5bfe\u8c61,\u958b\u59cb\u4f4d\u7f6e,\u6587\u5b57\u6570);<\/strong>\nSUBSTRING(\u5bfe\u8c61 FROM \u958b\u59cb\u4f4d\u7f6e FOR \u6587\u5b57\u6570);<\/strong><\/code><\/pre>\n\n\n
\u5bfe\u8c61\uff1a\u30ab\u30e9\u30e0\u540d\u307e\u305f\u306f\u6587\u5b57\u5217<\/p>\n
\u3053\u306e\u3088\u3046\u306b\u3001\u95a2\u6570\u540d\u3084\u4f7f\u7528\u65b9\u6cd5\u306b\u591a\u5c11\u306e\u9055\u3044\u306f\u3042\u308a\u307e\u3059\u304c\u3001\u3069\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3067\u3082\u540c\u3058\u3088\u3046\u306a\u6a5f\u80fd\u3092\u5229\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n
SUBSTRING\u306e\u4f7f\u3044\u65b9<\/h2>\n\n\n
SUBSTRING\u306e\u57fa\u672c\u4f5c\u7528\u304c\u5206\u304b\u3063\u305f\u3068\u3053\u308d\u3067SUBSTRING\u306e\u52b9\u679c\u7684\u306a\u4f7f\u3044\u65b9\u3092\u3044\u304f\u3064\u304b\u7d39\u4ecb\u3057\u307e\u3059\u3002SQL\u6587\u3068\u305d\u308c\u3067\u5f97\u3089\u308c\u308b\u7d50\u679c\u306b\u3064\u3044\u3066\u5177\u4f53\u7684\u306b\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n
1\uff0e\u5148\u982d\u304b\u3089\u6587\u5b57\u5217\u3092\u5207\u308a\u51fa\u3059<\/h3>\n\n\n
\u5148\u982d\u304b\u3089\u6587\u5b57\u5217\u3092\u5207\u308a\u51fa\u3059\u5834\u5408\u306f\u3001\u6b21\u306e\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n
\u3010SQL\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n
SUBSTRING(\u6587\u5b57\u5217,1,\u6587\u5b57\u6570)<\/strong><\/code><\/pre>\n\n\n
\u305f\u3068\u3048\u3070\u3001\u300cABCDEF\u300d\u3068\u3044\u3046\u6587\u5b57\u5217\u306e1\u6587\u5b57\u76ee\u304b\u30893\u6587\u5b57\u5206\u3092\u5207\u308a\u51fa\u3059\u306b\u306f\u4e0b\u8a18\u30b3\u30fc\u30c9\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u3010SQL\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n
SELECT SUBSTRING('ABCDEF',1,3);<\/strong><\/code><\/pre>\n\n\n
\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n
ABC<\/strong><\/code><\/pre>\n\n\n
\u65e5\u672c\u8a9e\u3067\u3082\u6570\u5b57\u3067\u3082\u540c\u3058\u3088\u3046\u306b\u5207\u308a\u51fa\u305b\u307e\u3059\u3002<\/p>\n\n\n
\u672b\u5c3e\u304b\u3089\u6587\u5b57\u5217\u3092\u5207\u308a\u51fa\u3059<\/h3>\n\n\n
\u672b\u5c3e\u304b\u3089\u6587\u5b57\u5217\u3092\u5207\u308a\u51fa\u3059\u5834\u5408\u306f\u3001\u6b21\u306e\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n
\u3010SQL\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n
SUBSTRING(\u6587\u5b57\u5217,-\u6587\u5b57\u6570)<\/strong><\/code><\/pre>\n\n\n
\u305f\u3068\u3048\u3070\u3001\u300cABCDEF\u300d\u3068\u3044\u3046\u6587\u5b57\u5217\u306e\u672b\u5c3e3\u6587\u5b57\u3092\u5207\u308a\u51fa\u3059\u306b\u306f\u4e0b\u8a18\u30b3\u30fc\u30c9\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u3010SQL\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n
SELECT SUBSTRING('ABCDEF',-3);<\/strong><\/code><\/pre>\n\n\n
\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n
DEF<\/strong><\/code><\/pre>\n\n\n
\u8ca0\u306e\u5024\u3092\u6307\u5b9a\u3057\u3066\u3044\u308b\u305f\u3081\u672b\u5c3e\u304b\u3089\u5207\u308a\u51fa\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n
\u9014\u4e2d\u306e\u6587\u5b57\u5217\u3092\u5207\u308a\u51fa\u3057\u305f\u3044<\/h3>\n\n\n
\u5148\u982d\u304b\u3089\u6587\u5b57\u5217\u3092\u5207\u308a\u51fa\u3059\u5834\u5408\u306f\u3001\u6b21\u306e\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n
\u3010SQL\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n
SUBSTRING(\u6587\u5b57\u5217,\u958b\u59cb\u4f4d\u7f6e,\u6587\u5b57\u6570)<\/strong><\/code><\/pre>\n\n\n
\u305f\u3068\u3048\u3070\u3001\u300cABCDEF\u300d\u3068\u3044\u3046\u6587\u5b57\u5217\u306e2\u6587\u5b57\u76ee\u304b\u30893\u6587\u5b57\u5206\u3092\u5207\u308a\u51fa\u3059\u306b\u306f\u4e0b\u8a18\u30b3\u30fc\u30c9\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u3010SQL\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n
SELECT SUBSTRING('ABCDEF',2,3);<\/strong><\/code><\/pre>\n\n\n
\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n
BCD<\/strong><\/code><\/pre>\n\n\n
\u3061\u306a\u307f\u306b\u3001\u4e0b\u8a18\u306e\u8a18\u8ff0\u3067\u3082\u540c\u69d8\u306e\u7d50\u679c\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n
SELECT SUBSTRING('ABCDEF' FROM 2 FOR 3);<\/strong><\/code><\/pre>\n\n\n
\u57fa\u790e\u7684\u306a\u4f7f\u3044\u65b9\u304c\u5206\u304b\u3063\u305f\u3068\u3053\u308d\u3067\u3001\u3053\u3053\u304b\u3089\u306f\u4e0b\u8a18\u306e\u300c\u725b\u4e3c\uff08gyuudon\uff09\u300d\u30c6\u30fc\u30d6\u30eb\u3092\u7528\u3044\u3066\u3088\u308a\u5b9f\u8df5\u7684\u306a\u4f7f\u7528\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n
\u300c\u725b\u4e3c\uff08gyuudon\uff09\u300d\u30c6\u30fc\u30d6\u30eb<\/strong><\/p>\n\n\n
\u5546\u54c1\u30b3\u30fc\u30c9\uff08id\uff09<\/th>\u5546\u54c1\u540d\uff08name\uff09<\/th>\u6599\u91d1\uff08price\uff09<\/th><\/tr>
1<\/td>\u725b\u4e3c\u5c0f\u76db<\/td>400<\/td><\/tr>
2<\/td>\u725b\u4e3c\u4e26\u76db<\/td>500<\/td><\/tr>
3<\/td>\u725b\u4e3c\u5927\u76db<\/td>600<\/td><\/tr>
4<\/td>\u8c5a\u4e3c\u5c0f\u76db<\/td>350<\/td><\/tr>
5<\/td>\u8c5a\u4e3c\u4e26\u76db<\/td>450<\/td><\/tr>
6<\/td>\u8c5a\u4e3c\u5927\u76db<\/td>550<\/td><\/tr>
7<\/td>\u30ab\u30ec\u30fc\u5c0f\u76db<\/td>320<\/td><\/tr>
8<\/td>\u30ab\u30ec\u30fc\u4e26\u76db<\/td>420<\/td><\/tr>
9<\/td>\u30ab\u30ec\u30fc\u5927\u76db<\/td>520<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u6307\u5b9a\u3057\u305f\u6587\u5b57\u5217\u3092\u542b\u3080\u30ab\u30e9\u30e0\u3092\u62bd\u51fa\u3059\u308b<\/h3>\n\n\n
\u6587\u5b57\u5217\u306f\u5909\u6570\u3067\u3082\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u3002\u725b\u4e3c\u30c6\u30fc\u30d6\u30eb\u306e\u672b\u5c3e\u304c\u300c\u4e26\u76db\u300d\u3067\u7d42\u308f\u308b\u5546\u54c1\u3092\u691c\u7d22\u3057\u307e\u3059\u3002<\/p>\n
\u3010SQL\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n
SELECT * FROM gyuudon WHERE SUBSTRING(name,-2,2)='\u4e26\u76db';<\/strong><\/code><\/pre>\n\n\n
\u300c\u5546\u54c1\u540d\uff08name\uff09\u300d\u30ab\u30e9\u30e0\u306f\u5909\u6570\u3068\u3057\u3066\u4f7f\u7528\u3057\u3066\u3044\u308b\u305f\u3081\u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u56f2\u307f\u307e\u305b\u3093\u3002<\/p>\n
\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n
\u5546\u54c1\u30b3\u30fc\u30c9\uff08id\uff09<\/th>\u5546\u54c1\u540d\uff08name\uff09<\/th>\u6599\u91d1\uff08price\uff09<\/th><\/tr>
2<\/td>\u725b\u4e3c\u4e26\u76db<\/td>500<\/td><\/tr>
5<\/td>\u8c5a\u4e3c\u4e26\u76db<\/td>450<\/td><\/tr>
8<\/td>\u30ab\u30ec\u30fc\u4e26\u76db<\/td>420<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n
\u958b\u59cb\u4f4d\u7f6e\u306b\u300c-2\u300d\u3092\u6307\u5b9a\u3057\u305f\u3053\u3068\u3067\u672b\u5c3e2\u6587\u5b57\u306b\u300c\u4e26\u76db\u300d\u3092\u542b\u3080\u5546\u54c1\u304c\u62bd\u51fa\u3055\u308c\u307e\u3059\u3002<\/p>\n
\u3053\u306e\u3088\u3046\u306b\u3001SUBSTRING\u306f\u524d\u65b9\u4e00\u81f4\u3084\u5f8c\u65b9\u4e00\u81f4\u3068\u3044\u3063\u305f\u3001\u6307\u5b9a\u3057\u305f\u6587\u5b57\u5217\u3092\u542b\u3080\u30c7\u30fc\u30bf\u306e\u62bd\u51fa\u306b\u6d3b\u7528\u3067\u304d\u307e\u3059\u3002\u306a\u304a\u6587\u5b57\u5217\u306e\u3069\u3053\u304b\u306b\u3001\u6307\u5b9a\u3057\u305f\u6587\u5b57\u5217\u304c\u542b\u307e\u308c\u308b\u30c7\u30fc\u30bf\u306e\u62bd\u51fa\u306b\u306f\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n\n\n
\u6570\u5024\u306e\u4e00\u90e8\u3092\u5207\u308a\u53d6\u3063\u3066\u8a08\u7b97\u3059\u308b<\/h3>\n\n\n
\u6570\u5024\u306e\u4e00\u90e8\u3092\u5207\u308a\u51fa\u3057\u3066\u8a08\u7b97\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002\u5404\u5546\u54c15\u3064\u5206\u3092\u8cfc\u5165\u3057\u305f\u6642\u306e\u4e0b\u4e8c\u6841\u306e\u5024\u6bb5\u3092\u8a08\u7b97\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n
\u3010SQL\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n
SELECT name,price,SUBSTRING(price,-2,2)*4 FROM gyuudon;<\/strong><\/code><\/pre>\n\n\n
\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n
\u5546\u54c1\u540d\uff08name\uff09<\/th>\u6599\u91d1\uff08price\uff09<\/th>SUBSTRING(price,-2,2)*4<\/strong><\/td><\/tr>
\u725b\u4e3c\u5c0f\u76db<\/td>400<\/td>0<\/td><\/tr>
\u725b\u4e3c\u4e26\u76db<\/td>500<\/td>0<\/td><\/tr>
\u725b\u4e3c\u5927\u76db<\/td>600<\/td>0<\/td><\/tr>
\u8c5a\u4e3c\u5c0f\u76db<\/td>350<\/td>0<\/td><\/tr>
\u8c5a\u4e3c\u4e26\u76db<\/td>450<\/td>0<\/td><\/tr>
\u8c5a\u4e3c\u5927\u76db<\/td>550<\/td>0<\/td><\/tr>
\u30ab\u30ec\u30fc\u5c0f\u76db<\/td>320<\/td>60<\/td><\/tr>
\u30ab\u30ec\u30fc\u4e26\u76db<\/td>420<\/td>60<\/td><\/tr>
\u30ab\u30ec\u30fc\u5927\u76db<\/td>520<\/td>60<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n
\u30ab\u30ec\u30fc\u30923\u76bf\u8cb7\u3046\u306a\u308910\u5186\u7389\u3092\u6301\u53c2\u3057\u305f\u65b9\u304c\u3088\u3055\u305d\u3046\u3067\u3059\u306d\u3002<\/p>\n\n\n
\u5206\u985e\u5225\u306e\u6570\u5024\u3092\u8a08\u7b97\u3059\u308b<\/h3>\n\n\n
SUBSTRING\u3067\u306f\u5206\u985e\u3054\u3068\u306e\u96c6\u8a08\u3082\u53ef\u80fd\u3067\u3059\u3002\u305f\u3060\u3057\u3001\u5206\u985e\u3054\u3068\u306e\u6587\u5b57\u6570\u304c\u540c\u3058\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u5404\u30b5\u30a4\u30ba\u3092\u4e00\u7a2e\u985e\u305a\u3064\u8cfc\u5165\u3059\u308b\u5834\u5408\u306e\u5408\u8a08\u984d\u3092\u6c42\u3081\u307e\u3059\u3002<\/p>\n
\u3010SQL\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n
SELECT SUBSTRING(name, -2, 2) AS \u30b5\u30a4\u30ba,SUM(price) AS \u5408\u8a08\u984d FROM gyuudon GROUP BY \u30b5\u30a4\u30ba;<\/strong><\/code><\/pre>\n\n\n
\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n
\u30b5\u30a4\u30ba<\/th>\u5408\u8a08\u984d<\/th><\/tr>
\u5c0f\u76db<\/td>1070<\/td><\/tr>
\u4e26\u76db<\/td>1370<\/td><\/tr>
\u5927\u76db<\/td>1670<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n
\u5546\u54c1\u540d\u306e\u672b\u5c3e2\u6587\u5b57\u3092\u5207\u308a\u51fa\u3057\u3066\u300c\u30b5\u30a4\u30ba\u300d\u30ab\u30e9\u30e0\u3068\u3057\u3001\u5404\u30b5\u30a4\u30ba\u306e\u5408\u8a08\u984d\u3092\u7b97\u51fa\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n
\u5207\u308a\u51fa\u3057\u305f\u6587\u5b57\u5217\u3067\u30c7\u30fc\u30bf\u3092\u66f4\u65b0\u3059\u308b<\/h3>\n\n\n
SELECT\u6587\u3060\u3051\u3067\u306a\u304f\u3001UPDATE\u6587\u3092\u4f7f\u3063\u305f\u30c7\u30fc\u30bf\u306e\u66f4\u65b0\u3082\u53ef\u80fd\u3067\u3059\u3002\u4fa1\u683c\u30929\u5272\u5f15\u304d\u306b\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
\u3010SQL\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n
UPDATE gyuudon SET price=SUBSTRING(price,1,2);<\/strong><\/code><\/pre>\n\n\n
\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n
\u5546\u54c1\u30b3\u30fc\u30c9\uff08id\uff09<\/th>\u5546\u54c1\u540d\uff08name\uff09<\/th>\u6599\u91d1\uff08price\uff09<\/th><\/tr>
1<\/td>\u725b\u4e3c\u5c0f\u76db<\/td>40<\/td><\/tr>
2<\/td>\u725b\u4e3c\u4e26\u76db<\/td>50<\/td><\/tr>
3<\/td>\u725b\u4e3c\u5927\u76db<\/td>60<\/td><\/tr>
4<\/td>\u8c5a\u4e3c\u5c0f\u76db<\/td>35<\/td><\/tr>
5<\/td>\u8c5a\u4e3c\u4e26\u76db<\/td>45<\/td><\/tr>
6<\/td>\u8c5a\u4e3c\u5927\u76db<\/td>55<\/td><\/tr>
7<\/td>\u30ab\u30ec\u30fc\u5c0f\u76db<\/td>32<\/td><\/tr>
8<\/td>\u30ab\u30ec\u30fc\u4e26\u76db<\/td>42<\/td><\/tr>
9<\/td>\u30ab\u30ec\u30fc\u5927\u76db<\/td>52<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n
\u6599\u91d1\u306e\u4e0b\u4e00\u6841\u3092\u53d6\u3063\u305f\u3053\u3068\u30679\u5272\u5f15\u304d\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n
\u3053\u306e\u3088\u3046\u306b\u3001\u30c6\u30fc\u30d6\u30eb\u5185\u3067\u8a08\u7b97\u304c\u3067\u304d\u305f\u308a\u3001\u66f4\u65b0\u3067\u304d\u305f\u308a\u3068\u3001\u5207\u308a\u51fa\u3057\u30bf\u6587\u5b57\u5217\u3092\u30c0\u30a4\u30ec\u30af\u30c8\u306b\u51e6\u7406\u3067\u304d\u308b\u306e\u3067\u3001\u308f\u3056\u308f\u3056\u5909\u6570\u3092\u683c\u7d0d\u3059\u308b\u624b\u9593\u304c\u7701\u3051\u307e\u3059\u3002<\/p>\n\n\n
SUBSTRING\u3092\u4f7f\u3046\u5834\u5408\u306e\u6ce8\u610f\u70b9<\/h2>\n\n\n
\u3059\u3067\u306b\u304a\u6c17\u3065\u304d\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001SUBSTRING\u306f\u4fbf\u5229\u306a\u3082\u306e\u306e\u4e07\u80fd\u306a\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/span>\u6d3b\u7528\u3059\u308b\u4e0a\u3067\u306e\u6ce8\u610f\u70b9\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/span><\/p>\n\n\n
\u3010\u7bc4\u56f2\u5916\u306e\u6307\u5b9a\u3011\u8a72\u5f53\u306e\u6587\u5b57\u5217\u304c\u306a\u3044\u3068\u7a7a\u306e\u6587\u5b57\u5217\u304c\u8fd4\u3055\u308c\u308b<\/h3>\n\n\n
\u300c\u725b\u4e3c\u300d\u300c\u30ab\u30ec\u30fc\u300d\u3068\u3044\u3046\u3088\u3046\u306b\u683c\u7d0d\u3055\u308c\u305f\u30c7\u30fc\u30bf\u306e\u6587\u5b57\u6570\u306f\u307e\u3061\u307e\u3061\u3067\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u5546\u54c1\u540d\u306e5\u6587\u5b57\u76ee\u3092\u5207\u308a\u51fa\u305d\u3046\u3068\u601d\u3063\u3066\u3082\u725b\u4e3c\u3084\u8c5a\u4e3c\u3067\u306f\u7a7a\u306e\u6587\u5b57\u6570\u304c\u8fd4\u3055\u308c\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n
\u3053\u306e\u3088\u3046\u306b\u3001\u8a72\u5f53\u306e\u6587\u5b57\u5217\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306e\u51e6\u7406\u306f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u3001\u7bc4\u56f2\u5916\u306e\u6587\u5b57\u306f\u7121\u8996\u3055\u308c\u308b\u304b\u3001\u53ef\u80fd\u306a\u9650\u308a\u306e\u6587\u5b57\u5217\u304c\u8fd4\u3055\u308c\u307e\u3059\u3002<\/p>\n
\u3010SQL\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n
SELECT id,SUBSTRING(name,5,1) FROM gyuudon;<\/strong><\/code><\/pre>\n\n\n\n
<\/p>\n\n\n\n
\u5546\u54c1\u30b3\u30fc\u30c9\uff08id\uff09<\/th>SUBSTRING(name,5,1)<\/th><\/tr>
1<\/td><\/td><\/tr>
2<\/td><\/td><\/tr>
3<\/td><\/td><\/tr>
4<\/td><\/td><\/tr>
5<\/td><\/td><\/tr>
6<\/td><\/td><\/tr>
7<\/td>\u76db<\/td><\/tr>
8<\/td>\u76db<\/td><\/tr>
9<\/td>\u76db<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n
\u3053\u306e\u3088\u3046\u306b4\u6587\u5b57\u3057\u304b\u306a\u3044\u5546\u54c1\u30b3\u30fc\u30c9\u300c1\uff5e6\u300d\u306f\u5207\u308a\u51fa\u305b\u306a\u3044\u306e\u3067\u3059\u3002<\/p>\n\n\n
\u65e5\u4ed8\u306e\u53d6\u5f97\u306a\u3069\u306b\u306f\u4e0d\u5411\u304d<\/h3>\n\n\n
\u65e5\u4ed8\u306e\u53d6\u5f97\u306a\u3069\u3001\u53d6\u5f97\u3059\u308b\u30c7\u30fc\u30bf\u306e\u5f62\u5f0f\u306b\u3088\u3063\u3066\u306f\u307b\u304b\u306e\u95a2\u6570\u306e\u65b9\u304c\u9069\u3057\u3066\u3044\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u65e5\u4ed8\u306e\u53d6\u5f97\u3067\u306f\u300cYYYYMMDD\u300d\u304b\u3089\u5e74\u6708\u65e5\u3092\u5207\u308a\u51fa\u3059\u306b\u306fSUBSTRING\u3067\u3082\u53ef\u80fd\u3067\u3059\u304c\u5e74\u3001\u6708\u3001\u65e5\u3067\u305d\u308c\u305e\u308c1\u56de\u305a\u3064\u3001\u8a083\u56de\u51e6\u7406\u3092\u884c\u308f\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u304c\u3001\u300cDATE_FORMAT\u300d\u95a2\u6570\u3092\u7528\u3044\u308c\u3070\u30b9\u30e0\u30fc\u30ba\u306b\u51e6\u7406\u3092\u884c\u3048\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306bSUBSTRING\u3067\u306f\u8907\u96d1\u306e\u51e6\u7406\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u5834\u5408\u306b\u306f\u3001\u307b\u304b\u306e\u95a2\u6570\u3082\u691c\u8a0e\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n
\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u4f4e\u4e0b<\/h3>\n\n\n
\u5927\u62b5\u306e\u30af\u30a8\u30ea\u3067\u3082\u5171\u901a\u3059\u308b\u3053\u3068\u3067\u3059\u304c\u3001\u6271\u3046\u30c7\u30fc\u30bf\u304c\u5927\u304d\u304f\u306a\u3063\u305f\u308a\u3001\u30c7\u30fc\u30bf\u91cf\u304c\u81a8\u5927\u306b\u306a\u308b\u307b\u3069\u3001\u7279\u306b\u3001\u591a\u304f\u306e\u884c\u306b\u5bfe\u3057\u3066SUBSTRING\u3092\u4f7f\u7528\u3059\u308b\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u5f71\u97ff\u304c\u51fa\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n
\u3010\u985e\u4f3c\u95a2\u6570\u3011LEFT\u95a2\u6570\u3068RIGHT\u95a2\u6570\u306e\u4f7f\u3044\u65b9<\/h2>\n\n\n
SUBSTRING\u95a2\u6570\u306e\u985e\u4f3c\u95a2\u6570\u306b\u300cLEFT\u95a2\u6570\u300d\u3068\u300cRIGHT\u95a2\u6570\u300d\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3089\u306f\u305d\u308c\u305e\u308c\u300c\u5de6\u304b\u3089\u4f55\u6587\u5b57\u300d\u300c\u53f3\u304b\u3089\u4f55\u6587\u5b57\u300d\u3068\u3044\u3046\u6307\u5b9a\u304c\u3067\u304d\u3001\u5de6\u53f3\u3069\u3061\u3089\u304b\u304b\u3089\u5207\u308a\u51fa\u3059\u5834\u5408\u306b\u7528\u3044\u3089\u308c\u307e\u3059\u3002<\/p>\n
\u3010SQL\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n
LEFT(\u5bfe\u8c61,\u6587\u5b57\u6570)\nRIGHT(\u5bfe\u8c61,\u6587\u5b57\u6570)<\/strong><\/code><\/pre>\n\n\n
\u3053\u308c\u3089\u306e\u95a2\u6570\u306fSUBSTRING\u95a2\u6570\u3068\u306f\u9055\u3063\u3066\u3001\u958b\u59cb\u4f4d\u7f6e\u3092\u6307\u5b9a\u3059\u308b\u7b2c\u4e8c\u5f15\u6570\u304c\u5b58\u5728\u3057\u307e\u305b\u3093\u3002<\/p>\n\n\n
SUBSTRING\u3092\u3046\u307e\u304f\u6d3b\u7528\u3057\u3088\u3046\uff01<\/h2>\n\n\n
\u7d39\u4ecb\u3057\u305f\u3088\u3046\u306bSUBSTRING\u95a2\u6570\u306fSQL\u6587\u3067\u5e45\u5e83\u3044\u4f7f\u3044\u65b9\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306eSUBSTRING\u3092\u3046\u307e\u304f\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u77ed\u3044\u5206\u3067\u3088\u308a\u52b9\u7387\u7684\u306a\u51e6\u7406\u304c\u884c\u3048\u307e\u3059\u3002<\/p>\n\n\n
SQL\u95a2\u9023\u8a18\u4e8b<\/h2>\n\n\n
\n