\u7b2c\uff11\u7ae0<\/p>\n\n\n\n
\u30fb\u30ea\u30ec\u30fc\u30b7\u30e7\u30ca\u30eb\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306f\u3001\u30c7\u30fc\u30bf\u3092\u8868\u3067\u7ba1\u7406\u3059\u308b\u3002
\u30fb\u8907\u6570\u306e\u8868\u306b\u5206\u985e\u3057\u305f\u30c7\u30fc\u30bf\u306e\u95a2\u9023\u4ed8\u3051\u306f\u3001\u30c7\u30fc\u30bf\u306e\u5024\u3092\u4f7f\u7528\u3059\u308b\u3002
\u30fb\u8868\u306fROW\u3068\u5217COLUMN\u3067\u69cb\u6210\u3055\u308c\u308b\u3002
\u30fb\u884c\u3068\u5217\u304c\u4ea4\u5dee\u3059\u308b\u90e8\u5206\u3092\u30d5\u30a3\u30fc\u30eb\u30c9\u3068\u3044\u3046\u3002
\u30fb\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u5024\u304c\u683c\u7d0d\u3055\u308c\u3066\u3044\u306a\u3044\u72b6\u614b\u3092NULL\u5024\u3068\u3044\u3046\u3002
\u30fbNULL\u5024\u306f\u3001\u7a7a\u767d\uff08\u30b9\u30da\u30fc\u30b9\uff09\u3084\u6570\u5024\u306e0\u3068\u306f\u533a\u5225\u3055\u308c\u308b\u3002
\u30fb\u884c\u3092\u4e00\u610f\u306b\u8b58\u5225\u3059\u308b\u305f\u3081\u306e\u5217\uff08\u307e\u305f\u306f\u3001\u5217\u306e\u7d44\u307f\u5408\u308f\u305b\uff09\u3092\u4e3b\u30ad\u30fc\u3068\u3044\u3046\u3002
\u30fb\u4e3b\u30ad\u30fc\u306b\u306f\u3001\u91cd\u8907\u3057\u305f\u5024\u306f\u683c\u7d0d\u3067\u304d\u306a\u3044\u3002
\u30fb\u4e3b\u30ad\u30fc\u306b\u306f\u3001NULL\u5024\u3092\u542b\u3081\u308b\u3053\u3068\u306f\u3067\u304d\u306a\u3044\u3002
\u30fb\u5916\u90e8\u30ad\u30fc\u306f\u3001\u540c\u3058\u8868\u3084\u4ed6\u306e\u8868\u306e\u4e3b\u30ad\u30fc\uff08\u307e\u305f\u306f\u3001\u4e00\u610f\u30ad\u30fc\uff09\u3092\u53c2\u7167\u3059\u308b\u3002
\u30fb\u5916\u90e8\u30ad\u30fc\u306b\u306f\u3001NULL\u5024\u3092\u542b\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002
\u30fbSQL\u306f\u3001DML\uff08\u30c7\u30fc\u30bf\u64cd\u4f5c\u8a00\u8a9e\uff09\u3001DDL\uff08\u30c7\u30fc\u30bf\u5b9a\u7fa9\u8a00\u8a9e\uff09\u3001DCL\uff08\u30c7\u30fc\u30bf\u5236\u5fa1\u8a00\u8a9e\uff09\u3001\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u5236\u5fa1\u306e\uff14\u3064\u306b\u5206\u985e\u3055\u308c\u308b\u3002
\u30fbDML\u306b\u306f\u3001SELECT\u6587\u3001INSERT\u6587\u3001UPDATE\u6587\u3001DELETE\u6587\u3001MERGE\u6587\u304c\u3042\u308b\u3002
\u30fbDDL\u306b\u306f\u3001CREATE\u6587\u3001ALTER\u6587\u3001DROP\u6587\u3001RENAME\u6587\u3001TRUNCATE\u6587\u3001COMMENT\u6587\u304c\u3042\u308b\u3002
\u30fbDCL\u306b\u306f\u3001GRANT\u6587\u3001REVOKE\u6587\u304c\u3042\u308b\u3002
\u30fb\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u5236\u5fa1\u306b\u306f\u3001COMMIT\u6587\u3001ROLLBACK\u6587\u3001SAVEPOINT\u6587\u304c\u3042\u308b\u3002<\/p>\n\n\n\n
\u7b2c\uff12\u7ae0
\u30fb\u691c\u7d22\u5bfe\u8c61\u306e\u8868\u304b\u3089\u7279\u5b9a\u306e\u5217\u306e\u307f\u3092\u53d6\u308a\u51fa\u3059\u6a5f\u80fd\u3092\u5c04\u5f71\u3001\u7279\u5b9a\u306e\u884c\u306e\u307f\u3092\u53d6\u308a\u51fa\u3059\u6a5f\u80fd\u3092\u9078\u629e\u3001\u8907\u6570\u306e\u8868\u3092\u95a2\u9023\u4ed8\u3051\u3066\u30c7\u30fc\u30bf\u3092\u53d6\u308a\u51fa\u3059\u6a5f\u80fd\u3092\u7d50\u5408\u3068\u3044\u3046\u3002
\u30fbSELECT\u53e5\u306b\u8907\u6570\u306e\u5217\u3092\u6307\u5b9a\u3059\u308b\u5834\u5408\u306b\u306f\u3001,\u30ab\u30f3\u30de\u3067\u533a\u5207\u308b\u3002
\u30fbSELECT\u53e5\u306b\u6307\u5b9a\u3057\u305f\u5217\u306e\u9806\u756a\u3067\u8868\u793a\u3055\u308c\u308b\u3002
\u30fbSELECT\u53e5\u306b\uff0a\u30a2\u30b9\u30bf\u30ea\u30b9\u30af\u3092\u6307\u5b9a\u3059\u308b\u3068\u3001\u5168\u3066\u306e\u5217\u306e\u30c7\u30fc\u30bf\u304c\u8868\u793a\u3055\u308c\u308b\u3002
\u30fbDESCRIBE\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u8868\u306e\u69cb\u9020\u3092\u78ba\u8a8d\u3067\u304d\u308b\u3002
\u30fb\u7b97\u8853\u6f14\u7b97\u5b50\u306e\u512a\u5148\u9806\u4f4d\u306f\u3001*\/+-\u3068\u306a\u308b\u3002
\u30fb\u7b97\u8853\u6f14\u7b97\u5b50\u306e\u512a\u5148\u9806\u4f4d\u306f\uff08\uff09\u4e38\u62ec\u5f27\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u660e\u793a\u7684\u306b\u6307\u5b9a\u3067\u304d\u308b\u3002
\u30fbNULL\u5024\u3092\u542b\u3080\u7b97\u8853\u5f0f\u306f\u3001\u8a08\u7b97\u7d50\u679c\u3082NULL\u5024\u306b\u306a\u308b\u3002
\u30fb\u5217\u5225\u540d\u306b\u30b9\u30da\u30fc\u30b9\u3084\u7279\u6b8a\u6587\u5b57\u3092\u542b\u3080\u5834\u5408\u3084\u3001\u5927\u6587\u5b57\u30fb\u5c0f\u6587\u5b57\u3092\u533a\u5225\u3059\u308b\u5834\u5408\u306f\u3001\u5217\u5225\u540d\u3092\u201d\u4e8c\u91cd\u5f15\u7528\u7b26\uff08\u30c0\u30d6\u30eb\u30af\u30a9\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\uff09\u3067\u56f2\u3080\u5fc5\u8981\u304c\u3042\u308b\u3002
\u30fb\u6587\u5b57\u30ea\u30c6\u30e9\u30eb\u3084\u65e5\u4ed8\u30ea\u30c6\u30e9\u30eb\u3092\u6587\u5b57\u5f0f\u3067\u6307\u5b9a\u3059\u308b\u5834\u5408\u306f\u3001’\u4e00\u91cd\u5f15\u7528\u7b26\uff08\u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\uff09\u3067\u56f2\u3080\u5fc5\u8981\u304c\u3042\u308b\u3002
\u30fb\u4ee3\u66ff\u5f15\u7528\u7b26(q)\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3057\u3066\u3001\u5f15\u7528\u7b26\u30c7\u30ea\u30df\u30bf\u3092\u5909\u66f4\u3067\u304d\u308b\u3002
\u30fb\u5f15\u7528\u7b26\u30c7\u30ea\u30df\u30bf\u306b\u306f\u3001\u4efb\u610f\u306e\u30b7\u30f3\u30b0\u30eb\u30d0\u30a4\u30c8\u6587\u5b57\u3084\u30c0\u30d6\u30eb\u30d0\u30a4\u30c8\u6587\u5b57\u3001[]\u3001{}\u3001()\u3001<>\u306e\u7d44\u307f\u5408\u308f\u305b\u3092\u6307\u5b9a\u3067\u304d\u308b\u3002
\u30fbDISTINCT\u5217\u540d\u3092\u6307\u5b9a\u3059\u308b\u3068\u305d\u306e\u5217\u306e\u91cd\u8907\u884c\u304c\u524a\u9664\u3055\u308c\u308b\u3002
\u30fbDISTINCT\u30ad\u30fc\u30ef\u30fc\u30c9\u306b\u7d9a\u3044\u3066\u3001\u8907\u6570\u306e\u5217\u3092\u6307\u5b9a\u3059\u308b\u3068\u3001\u6307\u5b9a\u3057\u305f\u5217\u306e\u5024\u306e\u7d44\u307f\u5408\u308f\u305b\u304c\u4e00\u4f4d\u306b\u306a\u308b\u884c\u306e\u307f\u8868\u793a\u3055\u308c\u308b\u3002
\u30fbDISTINCT\u30ad\u30fc\u30ef\u30fc\u30c9\u306f\u3001SELECT\u30ad\u30fc\u30ef\u30fc\u30c9\u306e\u76f4\u5f8c\u306b\uff11\u5ea6\u3060\u3051\u8a18\u8ff0\u3059\u308b\u3002<\/p>\n\n\n\n
\u7b2c\uff13\u7ae0
\u30fbWHERE\u53e5\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u884c\u3092\u53d6\u308a\u51fa\u3059\u305f\u3081\u306e\u6761\u4ef6\u3092\u6307\u5b9a\u3067\u304d\u308b\u3002
\u30fbWHERE\u53e5\u306f\u3001FROM\u53e5\u306e\u5f8c\u308d\u306b\u8a18\u8ff0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002
\u30fb\u6761\u4ef6\u306b\u6307\u5b9a\u3059\u308b\u6587\u5b57\u30ea\u30c6\u30e9\u30eb\u306f\u3001\u5927\u6587\u5b57\u30fb\u5c0f\u6587\u5b57\u304c\u533a\u5225\u3055\u308c\u3001\u65e5\u4ed8\u30ea\u30c6\u30e9\u30eb\u306f\u3001\u65e5\u4ed8\u66f8\u5f0f\u304c\u533a\u5225\u3055\u308c\u308b\u3002
\u30fbWHERE\u53e5\u306b\u306f\u3001\u5217\u5225\u540d\u3092\u6307\u5b9a\u3067\u304d\u306a\u3044\u3002
\u30fb\u4e0d\u7b49\u53f7\u306f\u3001\u7b49\u53f7\u307e\u305f\u306f\u3046\u7b49\u53f7\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u3001\u6307\u5b9a\u3067\u304d\u308b\uff08>=\u3001<=\u3001<>\uff09
\u30fbBETWEEN\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u7bc4\u56f2\u3092\u6307\u5b9a\u3057\u305f\u6761\u4ef6\u3092\u6307\u5b9a\u3067\u304d\u308b\u3002
\u30fbBETWEEN\u3092\u6307\u5b9a\u3057\u305f\u5834\u5408\u3001\u5883\u754c\u5024\u3082\u53d6\u308a\u51fa\u3059\u7bc4\u56f2\u306b\u542b\u307e\u308c\u308b\u3002NOT BETWEEN\u3092\u6307\u5b9a\u3057\u305f\u5834\u5408\u3001\u5883\u754c\u5024\u306f\u53d6\u308a\u51fa\u3059\u7bc4\u56f2\u306b\u542b\u307e\u308c\u306a\u3044\u3002
\u30fbIN\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3059\u308b\u3068\u5217\u5024\u3092\u8907\u6570\u306e\u5024\u3068\u6bd4\u8f03\u3059\u308b\u6761\u4ef6\u3092\u6307\u5b9a\u3067\u304d\u308b\u3002
\u30fbLIKE\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3059\u308b\u3068\u6307\u5b9a\u3057\u305f\u6587\u5b57\u30d1\u30bf\u30fc\u30f3\u306b\u4e00\u81f4\u3059\u308b\u884c\u3092\u53d6\u308a\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u3002
\u30fbLIKE\u6f14\u7b97\u5b50\u3067\u306f\u3001%\u3068_\u30a2\u30f3\u30c0\u30fc\u30d0\u30fc\u306e\uff12\u7a2e\u985e\u306e\u30ef\u30a4\u30eb\u30c9\u30ab\u30fc\u30c9\u3092\u4f7f\u7528\u3067\u304d\u308b\u3002
\u30fb\u30ef\u30a4\u30eb\u30c9\u30ab\u30fc\u30c9\u306f\u5168\u89d2\u30fb\u534a\u89d2\u3092\u533a\u5225\u3057\u306a\u3044\u3002
\u30fbESCAPE\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30ef\u30a4\u30eb\u30c9\u30ab\u30fc\u30c9\u3092\u6587\u5b57\u30ea\u30c6\u30e9\u30eb\u3068\u3057\u3066\u3001\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u3002
\u30fb\u30a8\u30b9\u30b1\u30fc\u30d7\u6587\u5b57\u306b\u306f\u3001\u4efb\u610f\u306e\uff11\u500d\u3068\u6587\u5b57\u3092\u6307\u5b9a\u3067\u304d\u308b\u3002
\u30fbIS NULL\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u5217\u306bNULL\u5024\u304c\u542b\u307e\u308c\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3067\u304d\u308b\u3002
\u30fbNULL\u5024\u3068\u306e\u6bd4\u8f03\u306f\u3001\u7b49\u53f7\uff1d\u3084\u4e0d\u7b49\u53f7\uff1c\u3067\u306f\u8a55\u4fa1\u3067\u304d\u306a\u3044\u3002
\u30fb\u7b49\u53f7\u30fb\u4e0d\u7b49\u53f7\u3092\u4f7f\u7528\u3057\u3066NULL\u5024\u3092\u8a55\u4fa1\u3057\u3066\u3082\u3001SQL\u6587\u306f\u30a8\u30e9\u30fc\u306b\u306f\u306a\u3089\u306a\u3044\u304c\u3001\u7d50\u679c\u306f\uff11\u4ef6\u3082\u53d6\u308a\u51fa\u3055\u308c\u306a\u3044\u3002
\u30fbAND\u6f14\u7b97\u5b50\u306f\u3001\u524d\u5f8c\u306e\u6761\u4ef6\u304c\u4e21\u65b9\u3068\u3082TRUE\u306e\u5834\u5408\u306bTRUE\u306b\u306a\u308b\u3002
\u30fbNOT\u6f14\u7b97\u5b50\u306f\u3001\u6761\u4ef6\u304cFALSE\u306e\u5834\u5408\u306bTRUE\u3092\u623b\u3059\u3002
\u30fb\u8ad6\u7406\u6f14\u7b97\u5b50\u306e\u512a\u5148\u9806\u4f4d\u306f\u3001\uff11\uff0eNOT\u30012.AND\u30013.OR
\u30fbOR\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3057\u305f\u8907\u6570\u306e\u6761\u4ef6\u3092\u3001IN\u6f14\u7b97\u5b50\u3067\u66f8\u304d\u63db\u3048\u3066\u3082\u5b9f\u884c\u6642\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306f\u540c\u3058\u3067\u3042\u308b\u3002
\u30fbORDER BY\u53e5\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30bd\u30fc\u30c8\u3057\u305f\uff08\u4e26\u3079\u66ff\u3048\u305f\uff09\u30c7\u30fc\u30bf\u3092\u53d6\u308a\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n\n\n\n
\u30fb\u964d\u9806\u3067\u30bd\u30fc\u30c8\u3059\u308b\u5834\u5408\u306f\u3001DESC\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u6307\u5b9a\u3059\u308b\u3002
\u30fbORDER BY\u53e5\u306f\u3001SELECT\u6587\u306e\u6700\u5f8c\u306b\u8a18\u8ff0\u3059\u308b\u3002
\u30fb\u30bd\u30fc\u30c8\u9806\u5e8f\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u306fASC\uff08\u6607\u9806\uff09\u3067\u3042\u308b\u3002
\u30fbNULL\u5024\u306f\u3001\u3082\u3063\u3068\u3082\u5927\u304d\u3044\u5024\u3068\u3057\u3066\u6271\u308f\u308c\u308b\u3002
\u30fbNULL\u5024\u3092\u542b\u3080\u30c7\u30fc\u30bf\u3092\u53d6\u308a\u51fa\u3059\u9806\u5e8f\u306f\u3001NULLS FIRST\u307e\u305f\u306f\u3001NULLS LAST\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u6307\u5b9a\u3067\u304d\u308b\u3002
\u30fbORDER BY\u53e5\u3068WHERE\u53e5\u306f\u3001\u540c\u6642\u306b\u6307\u5b9a\u3067\u304d\u308b\u3002
\u30fbORDER BY\u53e5\u306b\u306f\u3001\u5217\u5225\u540d\u3084\u5217\u306e\u4f4d\u7f6e\u3092\u6307\u5b9a\u3067\u304d\u308b\u3002
\u30fbORDER BY\u53e5\u306b\u306f\u3001\u8907\u6570\u306e\u5217\u3092\u6307\u5b9a\u3067\u304d\u308b\u3002
\u30fb\u8907\u6570\u306e\u5217\u3092\u6307\u5b9a\u3057\u305f\u5834\u5408\u3001\u5de6\u5074\u306b\u6307\u5b9a\u3057\u305f\u5217\u304b\u3089\u9806\u756a\u306b\u30bd\u30fc\u30c8\u3055\u308c\u308b\u3002\u307e\u305f\u3001\u8907\u6570\u306e\u5217\u3092\u6307\u5b9a\u3057\u305f\u5834\u5408\u3001\u5217\u3054\u3068\u306bASC\u307e\u305f\u306f\u3001DESC\u3092\u6307\u5b9a\u3067\u304d\u308b\u3002
\u30fb\u7d50\u679c\u30bb\u30c3\u30c8\u3067\u3001\u623b\u3055\u308c\u308b\u884c\u306e\u6570\u3092\u5236\u9650\u3059\u308b\u306b\u306f\u3001row_limitting_clause\u3092\u4f7f\u7528\u3059\u308b\u3002
\u30fbrow_limiting_clause\u306b\u306f\u3001OFFSET\u53e5\u3068FETCH\u53e5\u304c\u542b\u307e\u308c\u308b\u3002
\u30fbOFFSET\u53e5\u306b\u306f\u3001\u30b9\u30ad\u30c3\u30d7\u3059\u308b\u884c\u6570\uff08\u5236\u9650\u3092\u958b\u59cb\u3059\u308b\u884c\u306e\uff11\u3064\u524d\u306e\u884c\u6570\uff09\u3092\u6307\u5b9a\u3059\u308b\u3002
\u30fbFETC\uff48\u53e5\u306b\u306f\u3001\u8fd4\u3055\u308c\u308b\u884c\u6570\u307e\u305f\u306f\u3001\u884c\u306e\u5272\u5408\u3092\u6307\u5b9a\u3059\u308b\u3002
\u30fbROW\u3068ROWS\u306b\u533a\u5225\u306f\u306a\u3044\u304c\u3001OFFSET\u53e5\u3001FETCH\u53e5\u3068\u3082\u306b\u7701\u7565\u4e0d\u53ef\u3002
\u30fbFIRST\u3068NEXT\u306b\u533a\u5225\u306f\u306a\u3044\u304c\u3001FETCH\u53e5\u3092\u6307\u5b9a\u3059\u308b\u5834\u5408\u306f\u7701\u7565\u4e0d\u53ef\u3002<\/p>\n\n\n\n
\u7b2c\uff14\u7ae0
\u30fb\u5358\u4e00\u884c\u95a2\u6570\u306f\u3001\uff11\u4ef6\u306e\u5165\u529b\u30c7\u30fc\u30bf\u3054\u3068\u306b\u51e6\u7406\u3092\u884c\u3044\u3001\u5165\u529b\u30c7\u30fc\u30bf\u6bce\u306b\uff11\u4ef6\u306e\u7d50\u679c\u3092\u623b\u3059\u3002
\u30fb\u30b0\u30eb\u30fc\u30d7\u95a2\u6570\u306f\u3001\u8907\u6570\u4ef6\u306e\u5165\u529b\u30c7\u30fc\u30bf\u3092\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u3066\u3001\u96c6\u8a08\u51e6\u7406\u3092\u884c\u3063\u305f\u7d50\u679c\u3092\uff11\u3064\u3060\u3051\u623b\u3059\u3002
\u30fb\u5358\u4e00\u884c\u95a2\u6570\u306f\u3001SELECT\u53e5\u3001WHERE\u53e5\u3001ORDER BY\u53e5\u306a\u3069\u3067\u4f7f\u7528\u3067\u304d\u308b\u3002
\u30fb\u5358\u4e00\u884c\u95a2\u6570\u306f\u3001\u4efb\u610f\u306e\u30ec\u30d9\u30eb\u306b\u30cd\u30b9\u30c8\u3067\u304d\u308b\u3002
\u30fbUPPER\u95a2\u6570\u306f\u3001\u5f15\u6570\u306b\u6307\u5b9a\u3055\u308c\u305f\u6587\u5b57\u5217\u3092\u5927\u6587\u5b57\u306b\u5909\u63db\u3057\u3066\u623b\u3059\u3002
\u30fbLOWER\u95a2\u6570\u306f\u3001\u5f15\u6570\u306b\u6307\u5b9a\u3055\u308c\u305f\u6587\u5b57\u5217\u3092\u5c0f\u6587\u5b57\u306b\u5909\u63db\u3057\u3066\u623b\u3059\u3002
\u30fbINITCAP\u95a2\u6570\u306f\u3001\u5f15\u6570\u306b\u6307\u5b9a\u3055\u308c\u305f\u6587\u5b57\u5217\u306b\u542b\u307e\u308c\u308b\u5358\u8a9e\u306e\u5148\u982d\u6587\u5b57\u3092\u5927\u6587\u5b57\u306b\u3001\uff12\u6587\u5b57\u76ee\u4ee5\u964d\u3092\u5c0f\u6587\u5b57\u306b\u5909\u63db\u3057\u3066\u623b\u3059\u3002
\u30fbCONCAT\u95a2\u6570\u306f\u3001\u5f15\u6570\u306b\u6307\u5b9a\u3055\u308c\u305f\uff12\u3064\u306e\u6587\u5b57\u5217\u3092\u7d50\u5408\u3057\u3066\u623b\u3059\u3002
\u30fbSUBSTR\u95a2\u6570\u306f\u3001\u5f15\u6570\u306b\u6307\u5b9a\u3057\u305f\u6587\u5b57\u5217\u306em\u6587\u756a\u76ee\u306e\u6587\u5b57\u304b\u3089n\u6587\u5b57\u306e\u6587\u5b57\u5217\u3092\u623b\u3059\u3002
\u30fbLENGTH\u95a2\u6570\u306f\u3001\u5f15\u6570\u306b\u6307\u5b9a\u3055\u308c\u305f\u6587\u5b57\u5217\u306e\u6587\u5b57\u6570\u3092\u623b\u3059\u3002
\u30fbINSTR\u95a2\u6570\u306f\u3001\u6307\u5b9a\u3057\u305f\u6587\u5b57\u30d1\u30bf\u30fc\u30f3\u304c\u73fe\u308c\u308b\u4f4d\u7f6e\u3092\u623b\u3059\u3002
\u30fbLPAD\u95a2\u6570\u3001RPAD\u95a2\u6570\u306f\u3001\u5f15\u6570\u306b\u6307\u5b9a\u3055\u308c\u305f\u6587\u5b57\u5217\u304cn\u6587\u5b57\u306b\u306a\u308b\u3088\u3046\u306b\u3001\u57cb\u3081\u8fbc\u307f\u6587\u5b57\u3092\u57cb\u3081\u8fbc\u3093\u3067\u623b\u3059\u3002
\u30fbTRIM\u95a2\u6570\u306f\u3001\u5f15\u6570\u306b\u6307\u5b9a\u3055\u308c\u305f\u6587\u5b57\u5217\u306e\u5de6\u53f3\uff08\u524d\u5f8c\uff09\u306b\u3042\u308b\u4efb\u610f\u306e\u6587\u5b57\u5217\uff08\u524a\u9664\u6587\u5b57\uff09\u3092\u53d6\u308a\u9664\u3044\u3066\u623b\u3059\u3002
\u30fbREPLACE\u95a2\u6570\u306f\u3001\u5f15\u6570\u306b\u6307\u5b9a\u3055\u308c\u305f\u6587\u5b57\u5217\u306e\u3046\u3061\u3001\u4efb\u610f\u306e\u6587\u5b57\u5217\uff08\u5909\u66f4\u524d\u6587\u5b57\uff09\u3092\u3001\u5225\u306e\u6587\u5b57\u5217\uff08\u5909\u66f4\u5f8c\u6587\u5b57\uff09\u306b\u7f6e\u304d\u63db\u3048\u308b\u3002
\u30fbROUND\u95a2\u6570\u306f\u3001\u5f15\u6570\u306b\u6307\u5b9a\u3055\u308c\u305f\u6570\u5024\u3092\u5c0f\u6570\u70b9\u4ee5\u4e0bn\u6841\u306b\u56db\u6368\u4e94\u5165\u3057\u3066\u623b\u3059\u3002
\u30fbTRUNC\u95a2\u6570\u306f\u3001\u5f15\u6570\u306b\u6307\u5b9a\u3057\u305f\u6570\u5024\u3092\u5c0f\u6570\u70b9\u4ee5\u4e0bn\u6841\u306b\u5207\u6368\u3066\u3066\u623b\u3059\u3002
\u30fbMOD\u95a2\u6570\u306f\u3001\u5f15\u6570n\u3092\u5f15\u6570m\u3067\u5272\u3063\u305f\u4f59\u308a\u3092\u623b\u3059\u3002
\u30fbROUND\u95a2\u6570\u3068TRUNC\u95a2\u6570\u306e\u5f15\u6570n\u306b\u306f\u3001\u8ca0\u306e\u5024\u3092\u6307\u5b9a\u3067\u304d\u308b\u3002
\u30fb\u65e5\u4ed8\u5024\u306f\u3001\u6b63\u898f-\u5e74-\u6708-\u65e5-\u6642-\u5206-\u79d2\u3092\u8868\u3059\u5185\u90e8\u7684\u306a\u6570\u5024\u66f8\u5f0f\u3067\u683c\u7d0d\u3055\u308c\u308b\u3002
\u30fb\u65e5\u4ed8\u5024\u306f\u3001\u5b9f\u884c\u74b0\u5883\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u8868\u793a\u66f8\u5f0f\u3067\u8868\u793a\u3055\u308c\u308b\u3002
\u30fb\u82f1\u8a9e\u74b0\u5883\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u8868\u793a\u66f8\u5f0f\u306f\u3001DD-MON-RR(\u65e5-\u6708-\u5e74)
\u30fb\u65e5\u672c\u8a9e\u74b0\u5883\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u8868\u793a\u66f8\u5f0f\u306f\u3001RR-MM-DD\uff08\u5e74-\u6708-\u65e5\uff09
\u30fb\u65e5\u4ed8\u5024\u306b\u6570\u5024\u3092\u52a0\u7b97\u3059\u308b\u3068\u3001\u6307\u5b9a\u3057\u305f\u6570\u5024\u304c\u65e5\u6570\u3068\u3057\u3066\u3001\u52a0\u7b97\u3055\u308c\u308b\u3002
\u30fb\u65e5\u4ed8\u5024\u306b\u6570\u5024\/24\u3092\u52a0\u7b97\u3059\u308b\u3068\u3001\u6307\u5b9a\u3057\u305f\u6570\u5024\u304c\u6642\u9593\u6570\u3068\u3057\u3066\u3001\u52a0\u7b97\u3055\u308c\u308b\u3002
\u30fb\u65e5\u4ed8\u5024\u304b\u3089\u65e5\u4ed8\u5024\u3092\u539f\u7523\u3059\u308b\u3068\u3001\u6307\u5b9a\u3057\u305f\uff12\u3064\u306e\u65e5\u4ed8\u5024\u306e\u9593\u306b\u7d4c\u904e\u3057\u305f\u65e5\u6570\u304c\u623b\u3055\u308c\u308b\u3002
\u30fb\u65e5\u4ed8\u5024\u306b\u5bfe\u3057\u3066\u3001\u9664\u7b97\u3084\u4e57\u7b97\u306f\u5b9f\u884c\u3067\u304d\u306a\u3044\u3002
\u30fb\u65e5\u4ed8\u5024\u540c\u58eb\u3092\u52a0\u7b97\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u306a\u3044\u3002
\u30fbSYSDATE\u95a2\u6570\u306f\u3001\u73fe\u5728\u306e\u65e5\u4ed8(\u65e5\u6642)\u3092\u623b\u3059\u3002
\u30fbMONTHS_BETWEEN\u95a2\u6570\u306f\u3001\u5f15\u6570\u306b\u6307\u5b9a\u3057\u305f\uff12\u3064\u306e\u65e5\u4ed8\u3042\u3044\u3060\u306e\u6708\u6570\u3092\u623b\u3059\u3002
\u30fbADD_MONTHS\u95a2\u6570\u306f\u3001\u5f15\u6570\u6307\u5b9a\u3057\u305f\u65e5\u4ed8\u306en\u30f6\u6708\u5f8c\u306e\u65e5\u4ed8\u3092\u623b\u3059\u3002
\u30fbNEXT_DAY\u95a2\u6570\u306f\u3001\u5f15\u6570\u306b\u6307\u5b9a\u3057\u305f\u65e5\u4ed8\u306e\u7fcc\u65e5\u4ee5\u964d\u306b\u6307\u5b9a\u3057\u305f\u66dc\u65e5\u306b\u306a\u308b\u6700\u521d\u306e\u65e5\u4ed8\u3092\u623b\u3059\u3002
\u30fbLAST_DAY\u95a2\u6570\u306f\u3001\u5f15\u6570\u306b\u6307\u5b9a\u3057\u305f\u65e5\u4ed8\u3092\u542b\u3080\u6708\u306e\u3001\u6700\u7d42\u65e5\u306e\u65e5\u4ed8\u3092\u623b\u3059\u3002
\u30fbROUND\u95a2\u6570\uff08\u65e5\u4ed8\u95a2\u6570\uff09\u306f\u3001\u5f15\u6570\u306b\u6307\u5b9a\u3055\u308c\u305f\u65e5\u4ed8\u5024\u3092\u56db\u6368\u4e94\u5165\u3057\u3066\u623b\u3059\u3002
\u30fbTRUNC\u95a2\u6570\uff08\u65e5\u4ed8\u95a2\u6570\uff09\u306f\u3001\u5f15\u6570\u306b\u6307\u5b9a\u3055\u308c\u305f\u65e5\u4ed8\u5024\u3092\u5207\u6368\u3066\u3066\u623b\u3059\u3002<\/p>\n\n\n\n
\u7b2c\uff15\u7ae0
\u30fb\u6697\u9ed9\u7684\u306a\u30c7\u30fc\u30bf\u578b\u5909\u63db\u3068\u306f\u3001Oracle\u30b5\u30fc\u30d0\u304c\u81ea\u52d5\u7684\u306b\u884c\u3046\u30c7\u30fc\u30bf\u578b\u306e\u5909\u63db\u3067\u3042\u308a\u3001\u30c7\u30fc\u30bf\u578b\u306e\u5909\u63db\u304c\u610f\u5473\u3092\u6301\u3064\u5834\u5408\u306b\u306e\u307f\u6210\u529f\u3059\u308b\u3002
\u30fb\u660e\u793a\u7684\u306a\u30c7\u30fc\u30bf\u578b\u5909\u63db\u3068\u306f\u3001\u30e6\u30fc\u30b6\u304c\u660e\u793a\u7684\u306b\u5909\u63db\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u3001\u5b9f\u884c\u3059\u308b\u30c7\u30fc\u30bf\u578b\u306e\u5909\u63db\u3067\u3042\u308a\u3001Oracle\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3067\u306f\u3001\u660e\u793a\u7684\u306a\u30c7\u30fc\u30bf\u578b\u5909\u63db\u304c\u63a8\u5968\u3055\u308c\u308b\u3002
\u30fb\u65e5\u4ed8\u5024\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u95a2\u6570\u3084\u3001\u6570\u5024\u3092\u65e5\u4ed8\u5024\u306b\u5909\u63db\u3059\u308b\u5909\u63db\u95a2\u6570\u306f\u3001\u5b58\u5728\u3057\u306a\u3044\u3002
\u30fbTO_CHAR\u95a2\u6570\u306e\u5f15\u6570\u306b\u65e5\u4ed8\u5024\u3092\u6307\u5b9a\u3059\u308b\u3068\u3001\u6307\u5b9a\u3055\u308c\u305f\u65e5\u4ed8\u66f8\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u3001\u65e5\u4ed8\u5024\u3092\u6587\u5b57\u5024\u306b\u5909\u63db\u3059\u308b\u3002
\u30fb\u65e5\u4ed8\u66f8\u5f0f\u5185\u306e\u534a\u89d2\u8a18\u53f7\u306f\u3001\u305d\u306e\u307e\u307e\u7d50\u679c\u306b\u8868\u793a\u3055\u308c\u308b\u3002
\u30fb\u65e5\u4ed8\u66f8\u5f0f\u5185\u306b\u8981\u7d20\u304a\u3088\u3073\u3001\u534a\u89d2\u8a18\u53f7\u4ee5\u5916\u3092\u6307\u5b9a\u3059\u308b\u5834\u5408\u306f\u3001\u201d\u30c0\u30d6\u30eb\u30af\u30a9\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u3067\u56f2\u3080\u3002
\u30fb\u65e5\u4ed8\u66f8\u5f0f\u306e\u5927\u6587\u5b57\u30fb\u5c0f\u6587\u5b57\u306f\u533a\u5225\u3055\u308c\u308b\u3002
\u30fbM\u8981\u7d20\u3092\u6307\u5b9a\u3059\u308b\u3068\u57cb\u3081\u8fbc\u307f\u30e2\u30fc\u30c9\u306e\u6709\u52b9\u30fb\u7121\u52b9\u3092\u5207\u308a\u66ff\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002
\u30fbYY\u8981\u7d20\u3068RR\u8981\u7d20\u306f\u3001\u4e16\u7d00\u306e\u6271\u3044\u65b9\u304c\u7570\u306a\u308b\u3002
\u30fbTO_DATE\u95a2\u6570\u306f\u3001\u5f15\u6570\u306b\u6307\u5b9a\u3055\u308c\u305f\u6587\u5b57\u5024\u3092\u65e5\u4ed8\u5024\u306b\u5909\u63db\u3057\u3066\u623b\u3059\u3002<\/p>\n\n\n\n
\u30fb\u6642\u523b\u304c\u6307\u5b9a\u3055\u308c\u306a\u304b\u3063\u305f\u5834\u5408\u306f\u3001\u5348\u524d0\u66420\u52060\u79d2\u3068\u3057\u3066\u3001\u51e6\u7406\u3059\u308b\u3002
\u30fbTO_NUMBER\u95a2\u6570\u306f\u3001\u5f15\u6570\u306b\u6307\u5b9a\u3055\u308c\u305f\u6587\u5b57\u5024\u3092\u6570\u5024\u306b\u5909\u63db\u3057\u3066\u623b\u3059\u3002
\u30fbNVL\u95a2\u6570\u306f\u3001\u5f15\u6570\u306e\u5f0f1\u306b\u6307\u5b9a\u3055\u308c\u305f\u5024\u304cNULL\u5024\u4ee5\u5916\u306e\u5834\u5408\u306f\u3001\u5f0f1\u3092\u3001NULL\u5024\u306e\u5834\u5408\u306f\u3001\u5f0f2\u3092\u623b\u3059\u3002
\u30fbNVL2\u95a2\u6570\u306f\u3001\u5f15\u6570\u306e\u5f0f1\u306b\u6307\u5b9a\u3055\u308c\u305f\u5024\u304cNULL\u5024\u4ee5\u5916\u306e\u5834\u5408\u306f\u3001\u5f0f2\u3092NULL\u5024\u306e\u5834\u5408\u306f\u3001\u5f0f3\u3092\u623b\u3059\u3002
\u30fbNULLIF\u95a2\u6570\u306f\u3001\u5f15\u6570\u306b\u6307\u5b9a\u3055\u308c\u305f\uff12\u3064\u306e\u5024\u3092\u6bd4\u8f03\u3057\u3066\u3001\u7b49\u3057\u3044\u5834\u5408\u306f\u3001NULL\u5024\u3092\u623b\u3057\u3001\u7b49\u3057\u304f\u306a\u3044\u5834\u5408\u306f\u3001\u5f0f1\u3092\u623b\u3059\u3002
\u30fbCOALESCE\u95a2\u6570\u306f\u3001\u5f15\u6570\u306b\u6307\u5b9a\u3055\u308c\u305f\u5f0f\u30ea\u30b9\u30c8\u3092\u5148\u982d\uff08\u5de6\u5074\uff09\u304b\u3089\u30c1\u30a7\u30c3\u30af\u3057\u3001\u6700\u521d\u306b\u898b\u3064\u304b\u3063\u305fNULL\u5024\u4ee5\u5916\u306e\u5024\u3092\u623b\u3059\u3002COALESCE\u95a2\u6570\u306e\u5f0f\u30ea\u30b9\u30c8\u306b\u306f\u3001\u540c\u3058\u30c7\u30fc\u30bf\u578b\uff08\u6570\u5024\u3001\u6587\u5b57\u5024\u307e\u305f\u306f\u3001\u65e5\u4ed8\u5024\uff09\u306e\u30c7\u30fc\u30bf\u3092\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002
\u30fbCASE\u5f0f\u3084DECODE\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001SQL\u6587\u306e\u4e2d\u306bIF-THEN-ELSE\u30ed\u30b8\u30c3\u30af\u3092\u5b9f\u88c5\u3067\u304d\u308b\u3002<\/p>\n\n\n\n
\u7b2c\uff16\u7ae0
\u30fb\u30b0\u30eb\u30fc\u30d7\u95a2\u6570\u306f\u3001\u884c\u306e\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306b\u96c6\u8a08\u3057\u305f\u7d50\u679c\u3092\uff11\u3064\u3060\u3051\u623b\u3059\u3002
\u30fb\u30b0\u30eb\u30fc\u30d7\u95a2\u6570\u306f\u3001SELECT\u53e5\u3001ORDER BY\u53e5\u3001HAVING\u53e5\u3067\u4f7f\u7528\u3067\u304d\u308b\u3002
\u30fb\u30b0\u30eb\u30fc\u30d7\u95a2\u6570\u306f\u3001WHERE\u53e5\u3067\u306f\u4f7f\u7528\u3067\u304d\u306a\u3044\u3002
\u30fbDISTINCT\u3092\u6307\u5b9a\u3059\u308b\u3068\u91cd\u8907\u3057\u305f\u5024\u306f\u3001\uff11\u56de\u3060\u3051\u51e6\u7406\u3055\u308c\u308b\u3002
\u30fbCOUNT\u95a2\u6570\u306f\u3001\u53d6\u308a\u51fa\u3055\u308c\u305f\u30c7\u30fc\u30bf\u306e\u4ef6\u6570\u3092\u623b\u3059\u3002
\u30fbMAX\u95a2\u6570\u306f\u3001\u6700\u5927\u5024\u3092\u3001MIN\u95a2\u6570\u306f\u3001\u6700\u5c0f\u5024\u3092\u623b\u3059\u3002
\u30fbAVG\u95a2\u6570\u306f\u3001\u5e73\u5747\u5024\u3092\u3001SUM\u95a2\u6570\u306f\u3001\u5408\u8a08\u5024\u3092\u623b\u3059\u3002
\u30fbCOUNT\u95a2\u6570\u3001MAX\u95a2\u6570\u3001MIN\u95a2\u6570\u306e\u5f15\u6570\u306b\u306f\u3001\u6587\u5b57\u578b\u3001\u6570\u5024\u578b\u3001\u65e5\u4ed8\u578b\u3092\u6307\u5b9a\u3067\u304d\u308b\u3002
\u30fbAVG\u95a2\u6570\u3001SUM\u95a2\u6570\u3001STDDEV\u95a2\u6570\u3001VARIANCE\u95a2\u6570\u306e\u5f15\u6570\u306b\u306f\u3001\u6570\u5024\u578b\u306e\u307f\u6307\u5b9a\u3067\u304d\u308b\u3002
\u30fb\u30b0\u30eb\u30fc\u30d7\u95a2\u6570\u306f\u3001NULL\u5024\u3092\u7121\u8996\u3057\u3066\u96c6\u8a08\u51e6\u7406\u3092\u884c\u3046\u3002
\u30fbGROUP BY\u53e5\u3092\u6307\u5b9a\u3059\u308b\u3068\u3001\u884c\u3092\u30b0\u30eb\u30fc\u30d7\u5316\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002
\u30fbGROUP BY\u53e5\u3092\u304a\u3088\u3073\u3001HAVING\u53e5\u306f\u3001WHERE\u53e5\u306e\u5f8c\u308d\u3001\u304b\u3064\u3001ORDER BY\u53e5\u306e\u524d\u306b\u6307\u5b9a\u3059\u308b\u3002\u307e\u305f\u3001GROUP BY\u53e5\u3068HAVING\u53e5\u306f\u3069\u3061\u3089\u3092\u5148\u306b\u8a18\u8ff0\u3057\u3066\u3082\u540c\u69d8\u306b\u52d5\u4f5c\u3059\u308b\u3002
\u30fbGROUP BY\u53e5\u306b\u5217\u5225\u540d\u306f\u6307\u5b9a\u3067\u304d\u306a\u3044\u3002
\u30fbSELECT\u53e5\u306e\u9078\u629e\u30ea\u30b9\u30c8\u306b\u306f\u3001GROUP BY\u53e5\u3067\u6307\u5b9a\u3057\u305f\u5217\u3068\u30b0\u30eb\u30fc\u30d7\u95a2\u6570\u306e\u307f\u6307\u5b9a\u3067\u304d\u308b\u3002
\u30fb\u30b0\u30eb\u30fc\u30d7\u95a2\u6570\u306f\u3001\u6700\u5927\uff12\u30ec\u30d9\u30eb\u307e\u3067\u30cd\u30b9\u30c8\u3067\u304d\u308b\u3002
\u30fb\u30b0\u30eb\u30fc\u30d7\u95a2\u6570\u3092\u30cd\u30b9\u30c8\u3059\u308b\u5834\u5408\u306f\u3001GROUP BY\u53e5\u304c\u5fc5\u8981\u3002
\u30fbGROUP BY\u53e5\u306b\u5217\u5225\u540d\u306f\u6307\u5b9a\u3067\u304d\u306a\u3044\u3002\u6307\u5b9a\u3057\u305f\u5217\u3092SELECT\u53e5\u306e\u30ea\u30b9\u30c8\u306b\u6307\u5b9a\u3057\u306a\u304f\u3066\u3082\u30a8\u30e9\u30fc\u306b\u306f\u306a\u3089\u306a\u3044\u3002
\u30fbHAVING\u53e5\u3092\u6307\u5b9a\u3059\u308b\u3068\u3001\u53d6\u308a\u51fa\u3059\u30b0\u30eb\u30fc\u30d7\u3092\u5236\u9650\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002
\u30fbGROUP BY\u53e5\u3092\u6307\u5b9a\u305b\u305a\u306bHAVING\u53e5\u3092\u6307\u5b9a\u3057\u305f\u5834\u5408\u3001\u9078\u629e\u3055\u308c\u305f\u884c\u5168\u4f53\u304c\uff11\u30b0\u30eb\u30fc\u30d7\u3068\u3057\u3066\u51e6\u7406\u3055\u308c\u308b\u3002<\/p>\n\n\n\n
\u7b2c\uff17\u7ae0
\u30fb\u7d50\u5408\u3059\u308b\u8868\u306b\u91cd\u8907\u3059\u308b\u5217\u540d\u304c\u3042\u308b\u5834\u5408\u306f\u3001\u8868\u63a5\u982d\u8f9e\u3092\u6307\u5b9a\u3059\u308b\u3002
\u30fb\u8868\u63a5\u982d\u8f9e\u3092\u4f7f\u7528\u3059\u308b\u3068SQL\u6587\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5411\u4e0a\u3059\u308b\u3002
\u30fb\u8868\u63a5\u982d\u8f9e\u306b\u306f\u3001\u8868\u5225\u540d\u3092\u6307\u5b9a\u3067\u304d\u308b\u3002
\u30fb\u8868\u5225\u540d\u3092\u6307\u5b9a\u3059\u308b\u3068SQL\u6587\u5168\u4f53\u3067\u3082\u3068\u306e\u8868\u540d\u306f\u7121\u52b9\u306b\u306a\u308b\u3002
\u30fb\u81ea\u7136\u7d50\u5408\u3068\u306f\u3001\u7d50\u5408\u3059\u308b\uff12\u3064\u306e\u8868\u306b\u5171\u901a\u3057\u3066\u3001\u5b58\u5728\u3059\u308b\u3059\u3079\u3066\u306e\u5217\u306b\u57fa\u3065\u3044\u3066\u3001\u8868\u3092\u7d50\u5408\u3059\u308b\u7b49\u4fa1\u7d50\u5408\u3067\u3042\u308b\u3002
\u30fb\u81ea\u7136\u7d50\u5408\u3067\u306f\u3001\u660e\u793a\u7684\u306b\u7d50\u5408\u6761\u4ef6\u3092\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u306f\u306a\u3044\u3002
\u30fb\u81ea\u7136\u7d50\u5408\u3067\u306f\u3001\u540c\u540d\u306e\u5217\u306e\u30c7\u30fc\u30bf\u578b\u304c\u7570\u306a\u308b\u3068\u30a8\u30e9\u30fc\u306b\u6210\u308b\u3002
\u30fb\u81ea\u7136\u7d50\u5408\u306e\u7d50\u5408\u5217\u306b\u306f\u3001\u8868\u63a5\u982d\u8f9e\u3092\u6307\u5b9a\u3067\u304d\u306a\u3044\u3002
\u30fbUSING\u53e5\u3092\u4f7f\u7528\u3059\u308b\u3068\u7d50\u5408\u5217\u3092\u660e\u793a\u7684\u306b\u6307\u5b9a\u3067\u304d\u308b\u3002
\u30fb\u7d50\u5408\u3059\u308b\uff12\u3064\u306e\u8868\u306b\u5171\u901a\u3057\u3066\u5b58\u5728\u3059\u308b\u5217\u304c\u3001\u8907\u6570\u3042\u308b\u5834\u5408\u3082\u3001USING\u53e5\u3067\u7d50\u5408\u5217\u3092\u6307\u5b9a\u3067\u304d\u308b\u3002
\u30fbUSING\u53e5\u306e\u7d50\u5408\u5217\u306b\u306f\u3001\u8868\u63a5\u982d\u8f9e\u306f\u3001\u6307\u5b9a\u3067\u304d\u306a\u3044\u3002
\u30fb\uff11\u3064\u306e\u7d50\u5408\u306b\u5bfe\u3057\u3066\u3001NATURAL JOIN\u53e5\u3068USING\u53e5\u3092\u540c\u6642\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u306a\u3044\u3002
\u30fbON\u53e5\u3092\u4f7f\u7528\u3057\u305f\u7d50\u5408\u3067\u306f\u3001\u540d\u524d\u306e\u7570\u306a\u308b\u5217\u3092\u4f7f\u7528\u3057\u3066\u3001\u8868\u3092\u7d50\u5408\u3067\u304d\u308b\u3002\u5171\u901a\u306e\u5217\u540d\u306f\u8868\u63a5\u982d\u8f9e\u3067\u4fee\u98fe\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002
\u30fbON\u53e5\u3092\u4f7f\u7528\u3057\u305f\u7d50\u5408\u3067\u306f\u3001\u7d50\u5408\u6761\u4ef6\u306f\u3001ON\u53e5\u306b\u6307\u5b9a\u3059\u308b\u3002
\u30fbSQL\uff1a1999\u7d50\u5408\u69cb\u6587\u3068Oracle\u72ec\u81ea\u7d50\u5408\u69cb\u6587\u306b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u4e0a\u306e\u5dee\u306f\u306a\u3044\u3002
\u30fb\uff13\u3064\u4ee5\u4e0a\u306e\u8868\u3092\u7d50\u5408\u3059\u308b\u5834\u5408\u306f\u3001\uff11\u3064\u306eSQL\u6587\u306bNATURAL JOIN\u53e5\u3068USING\u53e5\u3001ON\u53e5\u3092\u540c\u6642\u306b\u4f7f\u7528\u3067\u304d\u308b\u3002
\u30fb\u975e\u7b49\u4fa1\u7d50\u5408\u3068\u306f\u3001\u7d50\u5408\u6761\u4ef6\u306b\uff1d\uff08\u7b49\u4fa1\u6f14\u7b97\u5b50\uff09\u4ee5\u5916\u306e\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3057\u3066\u3001\u6761\u4ef6\u3092\u6e80\u305f\u3059\u30c7\u30fc\u30bf\u3092\u53d6\u308a\u51fa\u3059\u7d50\u5408\u3067\u3042\u308b\u3002
\u30fb\u81ea\u5df1\u7d50\u5408\u3068\u306f\u3001\u540c\u4e00\u306e\u8868\u306b\uff12\u3064\u306e\u8868\u5225\u540d\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\uff11\u3064\u306e\u8868\u3092\uff12\u3064\u306e\u8868\u306b\u898b\u7acb\u3066\u3066\u3001\u30c7\u30fc\u30bf\u3092\u53d6\u308a\u51fa\u3059\u7d50\u5408\u3067\u3042\u308b\u3002
\u30fb\u5916\u90e8\u7d50\u5408\u3068\u306f\u3001\u7d50\u5408\u6761\u4ef6\u3092\u6e80\u305f\u3057\u305f\u30c7\u30fc\u30bf\u3060\u3051\u3067\u306a\u304f\u3001\u6761\u4ef6\u3092\u6e80\u305f\u3057\u3066\u3044\u306a\u3044\u30c7\u30fc\u30bf\u3082\u53d6\u308a\u51fa\u3059\u7d50\u5408\u3067\u3042\u308b\u3002
\u30fb\u5916\u90e8\u7d50\u5408\u306b\u306f\u3001\u5de6\u5074\u5916\u90e8\u7d50\u5408\u3001\u53f3\u5074\u5916\u90e8\u7d50\u5408\u3001\u5b8c\u5168\u5916\u90e8\u7d50\u5408\u306e\uff13\u3064\u306e\u7d50\u5408\u65b9\u6cd5\u304c\u3042\u308b\u3002
\u30fb\u30af\u30ed\u30b9\u7d50\u5408\u3068\u306f\u3001\u30c7\u30ab\u30eb\u30c8\u7a4d\uff08\u76f4\u7a4d\uff09\u3092\u623b\u3059\u7d50\u5408\u3067\u3042\u308b\u3002<\/p>\n\n\n\n
\u7b2c8\u7ae0
\u30fb\u526f\u554f\u5408\u305b\u306f\u3001()\u4e38\u62ec\u5f27\u3067\u56f2\u3080\u3002
\u30fb\u4e3b\u554f\u5408\u305b\u3068\u526f\u554f\u5408\u305b\u306eFROM\u53e5\u306b\u306f\u3001\u7570\u306a\u308b\u8868\u3092\u6307\u5b9a\u3067\u304d\u308b\u3002
\u30fb\uff11\u3064\u306e\u4e3b\u554f\u5408\u305b\u306b\u8907\u6570\u306e\u526f\u554f\u5408\u305b\u3092\u6307\u5b9a\u3067\u304d\u308b\u3002
\u30fb\u526f\u554f\u5408\u305b\u306f\u3001WHERE\u53e5\u3084HAVING\u53e5\u3001FROM\u53e5\u306a\u3069\u3067\u4f7f\u7528\u3067\u304d\u308b\u3002
\u30fb\u526f\u554f\u5408\u305b\u306f\u3001GROUP BY\u53e5\u3067\u306f\u4f7f\u7528\u3067\u304d\u306a\u3044\u3002
\u30fb\u526f\u554f\u5408\u305b\u306e\u5b9f\u884c\u7d50\u679c\u304c0\u4ef6\u306e\u5834\u5408\u3001\u4e3b\u554f\u5408\u305b\u306e\u5b9f\u884c\u7d50\u679c\u30820\u4ef6\u306b\u306a\u308b\u3002<\/p>\n\n\n\n
\u25bc\u526f\u554f\u5408\u305b\u306e\u57fa\u672c\u69cb\u6587
SELECT \u5217\u540d [,\u5217\u540d\u30fb\u30fb\u30fb]
FROM \u8868\u540d
WHERE \u5217\u540d \u6bd4\u8f03\u6f14\u7b97\u5b50( SELECT \u5217\u540d
FROM \u8868\u540d
[WHERE \u6761\u4ef6\u5f0f] );<\/p>\n\n\n\n
\u30fb\u5358\u4e00\u884c\u526f\u554f\u5408\u305b\u3067\u306f\u3001\u5358\u4e00\u884c\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3059\u308b\u3002
\u30fb\u8907\u6570\u884c\u526f\u554f\u5408\u305b\u3067\u306f\u3001\u8907\u6570\u884c\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3059\u308b\u3002
\u30fbANY\u304a\u3088\u3073ALL\u6f14\u7b97\u5b50\u306f\u3001\u5358\u4e00\u884c\u6f14\u7b97\u5b50\u3068\u30bb\u30c3\u30c8\u3067\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002
\u30fb\uff1dANY\uff08\u5024\u306e\u30ea\u30b9\u30c8\uff09\u306f\u3001\u6bd4\u8f03\u5bfe\u8c61\u306e\u5217\u306e\u5024\u304c\u30ea\u30b9\u30c8\u5185\u306e\u6700\u5c0f\u5024\u3088\u308a\u3082\u5927\u304d\u3044\u5834\u5408\u306bTRUE\u3092\u623b\u3059\u3002<\/p>\n\n\n\n
\u30fb\uff1cANY\uff08\u5024\u306e\u30ea\u30b9\u30c8\uff09\u306f\u3001\u6bd4\u8f03\u5bfe\u8c61\u306e\u5217\u306e\u5024\u304c\u30ea\u30b9\u30c8\u5185\u306e\u6700\u5927\u5024\u3088\u308a\u3082\u3001\u5c0f\u3055\u3044\u5834\u5408\u306bTRUE\u3092\u623b\u3059\u3002
\u30fb\uff1eALL\uff08\u5024\u306e\u30ea\u30b9\u30c8\uff09\u306f\u3001\u6bd4\u8f03\u5bfe\u8c61\u306e\u5217\u306e\u5024\u304c\u30ea\u30b9\u30c8\u5185\u306e\u6700\u5927\u5024\u3088\u308a\u3082\u5927\u304d\u3044\u5834\u5408\u306bTRUE\u3092\u623b\u3059\u3002
\u30fb\uff1cALL\uff08\u5024\u306e\u30ea\u30b9\u30c8\uff09\u306f\u3001\u6bd4\u8f03\u5bfe\u8c61\u306e\u5217\u306e\u5024\u304c\u30ea\u30b9\u30c8\u5185\u306e\u6700\u5c0f\u5024\u3088\u308a\u3082\u5c0f\u3055\u3044\u5834\u5408\u306bTRUE\u3092\u623b\u3059\u3002
\u30fbNOT IN\uff08\u30ea\u30b9\u30c8\uff09\u306f\u3001\u30ea\u30b9\u30c8\u5185\u306e\u5168\u3066\u306e\u5024\u3068\u7b49\u3057\u304f\u306a\u3044\u6642\u306bTRUE\u3092\u623b\u3059\u3002
\u30fbNOT IN\uff08\u30ea\u30b9\u30c8\uff09\u306f\u3001\u30ea\u30b9\u30c8\u306bNULL\u5024\u304c\u542b\u307e\u308c\u308b\u3068\u30c7\u30fc\u30bf\u306f\u30011\u4ef6\u3082\u623b\u3055\u308c\u306a\u3044\u3002<\/p>\n\n\n\n
\u7b2c9\u7ae0
\u30fb\u96c6\u5408\u6f14\u7b97\u5b50\u306f\u3001\u8907\u6570\u306e\u554f\u3044\u5408\u308f\u305b\u306e\u7d50\u679c\u3092\uff11\u3064\u306b\u307e\u3068\u3081\u308b\u305f\u3081\u306b\u4f7f\u7528\u3059\u308b\u3002
\u30fb\u96c6\u5408\u6f14\u7b97\u5b50\u3092\u542b\u3080\u554f\u5408\u305b\u3092\u8907\u5408\u554f\u5408\u305b\u3068\u547c\u3076\u3002
\u30fbUNION \uff12\u3064\u306e\u554f\u5408\u305b\u7d50\u679c\u3092\u9023\u7d50\u3057\u3001\u91cd\u8907\u3057\u305f\u884c\u3092\u6392\u9664\u3057\u3066\u623b\u3059\u3002
\u30fbUNION ALL 2\u3064\u306e\u554f\u5408\u305b\u7d50\u679c\u3092\u9023\u7d50\u3057\u3001\u91cd\u8907\u3057\u305f\u884c\u3082\u542b\u3081\u3066\u623b\u3059\u3002
\u30fbINTERSECT \uff12\u3064\u306e\u554f\u5408\u305b\u7d50\u679c\u306e\u3046\u3061\u3001\u5171\u901a\u3059\u308b\u884c\u3060\u3051\u3092\u623b\u3059\u3002
\u30fbMINUS \uff11\u3064\u76ee\u306e\u554f\u5408\u305b\u7d50\u679c\u306e\u3046\u3061\u30012\u3064\u76ee\u306e\u554f\u3044\u5408\u308f\u305b\u7d50\u679c\u306b\u306a\u3044\u884c\u3092\u623b\u3059\u3002
\u30fbUNION ALL\u6f14\u7b97\u5b50\u4ee5\u5916\u306e\u96c6\u5408\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u554f\u5408\u305b\u7d50\u679c\u306f\u3001SELECT\u53e5\u306b\u6307\u5b9a\u3055\u308c\u3066\u3044\u308b\u5217\u306e\u5024\u3067\u3001\u6607\u9806\u306b\u30bd\u30fc\u30c8\u3055\u308c\u308b\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u5834\u5408\uff09<\/p>\n\n\n\n
\u30fbMINUS\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u30011\u3064\u76ee\u306e\u554f\u5408\u305b\u30682\u3064\u76ee\u306e\u554f\u5408\u305b\u306e\u9806\u756a\u3092\u5165\u308c\u66ff\u3048\u308b\u3068\u3001\u554f\u5408\u305b\u7d50\u679c\u304c\u5909\u308f\u308b\u3002
\u30fb\u8907\u5408\u554f\u3044\u5408\u308f\u305b\u3067\u306f\u3001SELECT\u53e5\u306b\u6307\u5b9a\u3059\u308b\u5217\uff08\u307e\u305f\u306f\u5f0f\uff09\u306e\u500b\u6570\u3092\uff12\u3064\u306e\u554f\u5408\u305b\u3067\u540c\u6570\u306b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002
\u30fb2\u3064\u76ee\u306e\u554f\u5408\u305b\u306eSELECT\u53e5\u306b\u6307\u5b9a\u3059\u308b\u5217\u306e\u30c7\u30fc\u30bf\u578b\u306f\u30011\u3064\u76ee\u306e\u554f\u5408\u305b\u306eSELECT\u53e5\u306b\u6307\u5b9a\u3055\u308c\u3066\u3044\u308b\u5217\u306e\u30c7\u30fc\u30bf\u578b\u3068\u540c\u3058\u30c7\u30fc\u30bf\u578b\u30b0\u30eb\u30fc\u30d7\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002
\u30fbORDER BY\u53e5\u306f\u3001\u8907\u5408\u554f\u5408\u305b\u306e\u6700\u5f8c\u306e\u554f\u5408\u305b\u306b\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002\u307e\u305f\u3001\u6700\u521d\u306e\u554f\u5408\u305b\u306eSELECT\u53e5\u306b\u6307\u5b9a\u3055\u308c\u3066\u3044\u308b\u5217\u307e\u305f\u306f\u3001\u5217\u5225\u540d\u3092\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002
\u30fb\u8907\u5408\u554f\u5408\u305b\u3067\u306f\u3001NULL\u5024\u306f\u3001\u7121\u8996\u3055\u308c\u306a\u3044\u3002
\u30fb\u96c6\u5408\u6f14\u7b97\u5b50\u306e\u512a\u5148\u9806\u4f4d\u306f\u3001\u3059\u3079\u3066\u540c\u3058\u3067\u3042\u308b\u3002
\u30fb\uff08\uff09\u4e38\u62ec\u5f27\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u96c6\u5408\u6f14\u7b97\u5b50\u306e\u512a\u5148\u9806\u4f4d\u3092\u660e\u793a\u7684\u306b\u6307\u5b9a\u3067\u304d\u308b\u3002<\/p>\n\n\n\n
\u7b2c10\u7ae0
\u30fbINSERT\u53e5\u306b\u6307\u5b9a\u3059\u308b\u5217\u540d\u3092\u7701\u7565\u3059\u308b\u5834\u5408\u306f\u3001VALUES\u53e5\u306b\u306f\u3001\u8868\u306b\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u5217\u3068\u540c\u6570\u306e\u5024\u3092\u3001\u8868\u306e\u5217\u69cb\u6210\u3068\u540c\u3058\u3058\u3085\u3093\u3070\u3093\u3067\u6307\u5b9a\u3059\u308b\u3002
\u30fbINSERT\u53e5\u306b\u6307\u5b9a\u3059\u308b\u5217\u540d\u3092\u7701\u7565\u3059\u308b\u5834\u5408\u306f\u3001VALUES\u53e5\u306b\u306f\u3001\u5217\u540d\u306e\u30ea\u30b9\u30c8\u3068\u540c\u6570\u306e\u5024\u3092\u3001\u540c\u3058\u9806\u756a\u3067\u6307\u5b9a\u3059\u308b\u3002
\u30fb\u5217\u306e\u30ea\u30b9\u30c8\u304b\u3089\u7701\u7565\u3055\u308c\u305f\u5217\u306b\u306f\u3001NULL\u5024\u304c\u683c\u7d0d\u3055\u308c\u308b\uff08\u6697\u9ed9\u7684\u624b\u6cd5\uff09
\u30fb\u5217\u306bNULL\u30ad\u30fc\u30ef\u30fc\u30c9\u3084\u2019 \u2019\u304b\u3089\u306e\u6587\u5b57\u5217\u3092\u6307\u5b9a\u3059\u308b\u3068NULL\u5024\u304c\u683c\u7d0d\u3055\u308c\u308b\uff08\u660e\u793a\u7684\u624b\u6cd5\uff09
\u30fb\u526f\u554f\u5408\u305b\u3092\u4f7f\u7528\u3057\u305fINSERT\u6587\u306b\u306f\u3001VALUES\u53e5\u306f\u3001\u6307\u5b9a\u3057\u306a\u3044\u3002
\u30fbUPDATE\u6587\u306eWHERE\u53e5\u3092\u7701\u7565\u3059\u308b\u3068\u3001\u8868\u5185\u306e\u3059\u3079\u3066\u306e\u884c\u304c\u66f4\u65b0\u3055\u308c\u308b\u3002
\u30fbDELETE\u6587\u3067WHERE\u53e5\u3092\u7701\u7565\u3059\u308b\u3068\u3001\u8868\u5185\u306e\u3059\u3079\u3066\u306e\u884c\u304c\u524a\u9664\u3055\u308c\u308b\u3002
\u30fbDELETE\u6587\u306eWHERE\u53e5\u306b\u306f\u3001\u526f\u554f\u5408\u305b\u3092\u4f7f\u7528\u3057\u305f\u6761\u4ef6\u3092\u6307\u5b9a\u3067\u304d\u308b\u3002
\u30fb\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3068\u306f\u3001\u8ad6\u7406\u7684\u306a\u51e6\u7406\u5358\u4f4d\u3067\u3042\u308b\u3002
\u30fbDDL\u3068DCL\u306f\u30011\u6587\u3067\uff11\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3068\u306a\u308b\u3002
\u30fbDML\u3092\u542b\u3080\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u306f\u3001\u8ad6\u7406\u7684\u306a\u6700\u5c0f\u4f5c\u696d\u5358\u4f4d\u3068\u3057\u3066\u6271\u308f\u308c\u308b\uff11\u3064\u307e\u305f\u306f\u3001\u8907\u6570\u306eDML\u3067\u69cb\u6210\u3055\u308c\u308b\u3002
\u30fbCOMMIT\u6587\u3092\u5b9f\u884c\u3059\u308b\u3068\u3059\u3079\u3066\u306e\u51e6\u7406\u304c\u78ba\u5b9a\u3059\u308b\u3002
\u30fbROLLBACK\u6587\u3092\u5b9f\u884c\u3059\u308b\u3068\u3059\u3079\u3066\u306e\u51e6\u7406\u304c\u53d6\u308a\u6d88\u3055\u308c\u308b\u3002
\u30fbSAVEPOINT\u6587\u3092\u5b9f\u884c\u3059\u308b\u3068\u30bb\u30fc\u30d6\u30dd\u30a4\u30f3\u30c8\u304c\u4f5c\u6210\u3055\u308c\u308b\u3002
\u30fbROLLBACK TO SAVEPOINT\u6587\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001\u6307\u5b9a\u3057\u305f\u30bb\u30fc\u30d6\u30dd\u30a4\u30f3\u30c8\u307e\u3067\u306e\u51e6\u7406\u3092\u53d6\u308a\u6d88\u3059\uff08\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3059\u308b\uff09\u3002\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u306f\u7d99\u7d9a\u3059\u308b\u3002
\u30fbCOMMIT\u6587\u3067\u51e6\u7406\u3092\u78ba\u5b9a\u3057\u305f\u5f8c\u306f\u3001\u51e6\u7406\u3092\u53d6\u308a\u6d88\u3059\u3053\u3068\u306f\u3067\u304d\u306a\u3044\u3002
\u30fb\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3057\u305f\u6642\u70b9\u4ee5\u964d\u306b\u4f5c\u6210\u3055\u308c\u305f\u30bb\u30fc\u30d6\u30dd\u30a4\u30f3\u30c8\u306f\u3001\u7834\u68c4\u3055\u308c\u308b\u3002
\u30fbDDL\u304a\u3088\u3073DCL\u3092\u5b9f\u884c\u3059\u308b\u3068\u81ea\u52d5\u30b3\u30df\u30c3\u30c8\u304c\u5b9f\u884c\u3055\u308c\u308b\u3002
\u30fbSQL * Plus\uff08\u30bb\u30c3\u30b7\u30e7\u30f3\uff09\u304c\u7570\u5e38\u7d42\u4e86\u3059\u308b\u3068\u3001\u81ea\u52d5\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u304c\u5b9f\u884c\u3055\u308c\u308b\u3002
\u30fbTRUNCATE\u6587\u306f\u3001DDL\u306e\u305f\u3081\u3001\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u306f\u3067\u304d\u306a\u3044\u3002
\u30fb\u672a\u30b3\u30df\u30c3\u30c8\u306e\u30c7\u30fc\u30bf\u306f\u3001\u4ed6\u306e\u30bb\u30c3\u30b7\u30e7\u30f3\u304b\u3089\u306f\u3001\u53c2\u7167\u3067\u304d\u306a\u3044\u3002\u5909\u66f4\uff08\u8ffd\u52a0\u3001\u66f4\u65b0\u3001\u524a\u9664\uff09\u3092\u884c\u3063\u305f\u30bb\u30c3\u30b7\u30e7\u30f3\u3060\u3051\u3067\u78ba\u8a8d\u3067\u304d\u308b\u3002
\u30fb\u30ed\u30c3\u30af\u306f\u3001\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u4fee\u4e86\u307e\u3067\u4fdd\u6301\u3055\u308c\u308b\u3002
\u30fb\u30b3\u30df\u30c3\u30c8\u5f8c\u306f\u3001\u3059\u3079\u3066\u306e\u30bb\u30c3\u30b7\u30e7\u30f3\u3067\u5909\u66f4\u5f8c\u306e\u30c7\u30fc\u30bf\u3092\u53c2\u7167\u3067\u304d\u308b\u3002
\u30fb\u8aad\u307f\u53d6\u308a\u64cd\u4f5c\u306f\u3001\u66f8\u304d\u8fbc\u307f\u64cd\u4f5c\u306b\u3088\u3063\u3066\u3001\u5f85\u6a5f\u3055\u305b\u3089\u308c\u306a\u3044\u3002
\u30fb\u540c\u4e00\u30e6\u30fc\u30b6\u3067\u3082\u3001\u30bb\u30c3\u30b7\u30e7\u30f3\u304c\u7570\u306a\u308b\u3068\u672a\u30b3\u30df\u30c3\u30c8\u306e\u30c7\u30fc\u30bf\u306f\u53c2\u7167\u3067\u304d\u306a\u3044\u3002
\u30fbFOR UPDATE\u53e5\u3092\u6307\u5b9a\u3059\u308b\u3068\u3001SELECT\u6587\u3067\u3082\u8aad\u307f\u53d6\u308a\u64cd\u4f5c\u306e\u5bfe\u8c61\u884c\u304c\u30ed\u30c3\u30af\u3055\u308c\u308b\u3002<\/p>\n\n\n\n
\u7b2c11\u7ae0
\u30fb\u30e6\u30fc\u30b6\u306f\u3001\u30e6\u30fc\u30b6\u540d\u3068\u540c\u3058\u540d\u524d\u306e\u30b9\u30ad\u30fc\u30de\u3092\uff11\u3064\u6240\u6709\u3059\u308b\u3002
\u30fb\u4ed6\u306e\u30e6\u30fc\u30b6\u304c\u6240\u6709\u3059\u308b\u30b9\u30ad\u30fc\u30de\u5185\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u53c2\u7167\u3059\u308b\u306b\u306f\u3001\u30b9\u30ad\u30fc\u30de\u540d.\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u540d\u3092\u6307\u5b9a\u3059\u308b\u3002
\u30fb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u540d\u306e\u5148\u982d\u6587\u5b57\u306f\u3001\u6570\u5b57\u4ee5\u5916\u306e\u6587\u5b57\u3002
\u30fb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u540d\u306e\u30a2\u30eb\u30d5\u30a1\u30d9\u30c3\u30c8\u306e\u5927\u6587\u5b57\u30fb\u5c0f\u6587\u5b57\u306f\u3001\u533a\u5225\u3055\u308c\u306a\u3044\u3002
\u30fb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u540d\u306b\u4f7f\u7528\u3067\u304d\u308b\u8a18\u53f7\u306f\u3001_\u30a2\u30f3\u30c0\u30fc\u30d0\u30fc\u3001$\u3001#\u306e\u307f\u3067\u3042\u308b\u3002
\u30fb\u8868\u3092\u4f5c\u6210\u3059\u308b\u306b\u306f\u3001CREATE TABLE\u6a29\u9650\u304c\u5fc5\u8981\u3067\u3042\u308b\u3002
\u30fbDEFAULT\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u4efb\u610f\u306e\u5217\u306b\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u8a2d\u5b9a\u3067\u304d\u308b\u3002
\u30fbDEFAULT\u5024\u306b\u306f\u3001\u30ea\u30c6\u30e9\u30eb\u3001\u5f0f\u3001SQL\u95a2\u6570\uff08SYSDATE\u3084USER\u306a\u3069\uff09\u3092\u6307\u5b9a\u3067\u304d\u308b\u3002
\u30fbDEFAULT\u5024\u306b\u306f\u3001\u5225\u306e\u5217\u306e\u540d\u524d\u306f\u6307\u5b9a\u3067\u304d\u306a\u3044\u3002
\u30fb\u8868\u3092\u524a\u9664\u3059\u308b\u3068\u3001\u8868\u5185\u306e\u3059\u3079\u3066\u306e\u30c7\u30fc\u30bf\u3068\u8868\u306b\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u5236\u7d04\u3001\u7d22\u5f15\u3082\u524a\u9664\u3055\u308c\u308b\u3002
\u30fb\u8868\u3092\u524a\u9664\u3057\u3066\u3082\u3001\u8868\u3092\u53c2\u7167\u3059\u308b\u30d3\u30e5\u30fc\u3068\u30b7\u30ce\u30cb\u30e0\u306f\u3001\u524a\u9664\u3055\u308c\u306a\u3044\uff08\u7121\u52b9\u306b\u306a\u308b\uff09\u3002
\u30fb\u8868\u306e\u6240\u6709\u8005\u307e\u305f\u306f\u3001DROP ANY TABLE\u6a29\u9650\u3092\u6301\u3064\u30e6\u30fc\u30b6\u3060\u3051\u304c\u8868\u3092\u524a\u9664\u3067\u304d\u308b\u3002
\u30fbVARCHAR2\u578b\u306e\u6700\u5927\u30b5\u30a4\u30ba\u306e\u6307\u5b9a\u306f\u3001\u7701\u7565\u3067\u304d\u306a\u3044\u3002
\u30fbCHAR\u578b\u306e\u6700\u5927\u30b5\u30a4\u30ba\u306e\u6307\u5b9a\u3092\u7701\u7565\u3057\u305f\u5834\u5408\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306e1\u304c\u4f7f\u7528\u3055\u308c\u308b\u3002
\u30fbLONG\u5217\u306f\u3001\u526f\u554f\u5408\u305b\u3092\u4f7f\u7528\u3057\u305f\u8868\u306e\u4f5c\u6210\u6642\u306b\u30b3\u30d4\u30fc\u3067\u304d\u306a\u3044\uff08\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\uff09
\u30fbLONG\u5217\u306f\u3001GROUP BY\u53e5\u3068ORDER BY\u53e5\u306b\u6307\u5b9a\u3067\u304d\u306a\u3044\u3002
\u30fbLONG\u5217\u306f\u3001\uff11\u3064\u306e\u8868\u306b\uff11\u3064\u3060\u3051\u5b9a\u7fa9\u3067\u304d\u308b\uff08LONG\u5217\u307e\u305f\u306fLONG RAW\u5217\u306e\u3069\u3061\u3089\u304b\uff11\u3064\u3060\u3051\uff09
\u30fbLONG\u5217\u306b\u306f\u3001\u5236\u7d04\u3092\u5b9a\u7fa9\u3067\u304d\u306a\u3044\u3002
\u30fbDATE\u578b\u3067\u306f\u3001\u4e16\u7d00\u3001\u5e74\u3001\u6708\u3001\u65e5\u3001\u6642\u3001\u5206\u3001\u79d2\u304c\u5185\u90e8\u7684\u306a\u6570\u5024\u66f8\u5f0f\u3067\u683c\u7d0d\u3055\u308c\u308b\u3002
\u30fb\uff11\u3064\u306e\u8868\u306b\u8907\u6570\u306eLOB\u578b\u306e\u5217\u3092\u5b9a\u7fa9\u3067\u304d\u308b\u3002
\u30fbTIMESTAMP\u578b\u306f\u3001\u79d2\u306e\u5c0f\u6570\u70b9\u4ee5\u4e0b\u306e\u5024\u3082\u683c\u7d0d\u3067\u304d\u308b\u3002
\u30fbINTERVAL YEAR TO MONTH\u578b\u3068INTERVAL DAY TO SECOND\u578b\u306f\u3001\uff12\u3064\u306e\u65e5\u4ed8\u30fb\u6642\u523b\u306e\u9593\u9694\u3092\u683c\u7d0d\u3067\u304d\u308b\u3002
\u30fb\u8868\u5185\u306e\u65e2\u5b58\u306e\u30c7\u30fc\u30bf\u304c\u3001\u8ffd\u52a0\u3059\u308b\u5236\u7d04\u306e\u30eb\u30fc\u30eb\u306b\u5f93\u3063\u3066\u3044\u308c\u3070\u3001\u5236\u7d04\u306e\u8ffd\u52a0\u304c\u3067\u304d\u308b\u3002
\u30fb\u5236\u7d04\u306f\u3001\u30c7\u30fc\u30bf\u306e\u5909\u66f4\u6642\uff08\u8ffd\u52a0\u3001\u66f4\u65b0\u3001\u524a\u9664\uff09\u306b\u81ea\u52d5\u7684\u306b\u30c1\u30a7\u30c3\u30af\u3055\u308c\u308b\u3002
\u30fb\u5236\u7d04\u306f\u5217\u30ec\u30d9\u30eb\u307e\u305f\u306f\u3001\u8868\u30ec\u30d9\u30eb\u3067\u5b9a\u7fa9\u3067\u304d\u308b\uff08\u5b9a\u7fa9\u3055\u308c\u305f\u5236\u7d04\u306b\u6a5f\u80fd\u7684\u306a\u5dee\u306f\u306a\u3044\uff09
\u30fbNOT NULL\u5236\u7d04\u306f\u3001\u5217\u30ec\u30d9\u30eb\u3067\u306e\u307f\u5b9a\u7fa9\u3067\u304d\u308b\u3002
\u30fb\u8907\u6570\u306e\u5217\u306e\u7d44\u307f\u5408\u308f\u305b\u304b\u3089\u306a\u308b\u5236\u7d04\uff08\u8907\u5408\u306e\u5236\u7d04\uff09\u306f\u3001\u8868\u30ec\u30d9\u30eb\u3067\u306e\u307f\u5b9a\u7fa9\u3067\u304d\u308b\u3002
\u30fb\u5236\u7d04\u540d\u3092\u7701\u7565\u3059\u308b\u3068\u3001\u5236\u7d04\u540d\u306f\u3001SYS_Cn\u306e\u5f62\u5f0f\u306b\u6210\u308b\u3002
\u30fb\uff11\u3064\u306e\u5217\u306b\u8907\u6570\u306e\u5217\u30ec\u30d9\u30eb\u5236\u7d04\u3092\u5b9a\u7fa9\u3059\u308b\u5834\u5408\u3001\u30ab\u30f3\u30de\u3067\u306f\u306a\u304f\u3001\u6539\u884c\u307e\u305f\u306f\u3001\u30b9\u30da\u30fc\u30b9\u3067\u533a\u5207\u308b\u3002
\u30fb\uff11\u3064\u306e\u8868\u306b\u8907\u6570\u306e\u8868\u30ec\u30d9\u30eb\u5236\u7d04\u3092\u5b9a\u7fa9\u3059\u308b\u5834\u5408\u3001\u6539\u884c\u3084\u30b9\u30da\u30fc\u30b9\u3067\u306f\u306a\u304f\u3001\u30ab\u30f3\u30de\u3067\u533a\u5207\u308b\u3002
\u30fbNOT NULL\u5236\u7d04\u3092\u5b9a\u7fa9\u3059\u308b\u3068\u3001\u305d\u306e\u5217\u306b\u306f\u3001NULL\u5024\u3092\u8a2d\u5b9a\u3067\u304d\u306a\u3044\u3002
\u30fbUNIQUE\u5236\u7d04\uff08\u4e00\u610f\u30ad\u30fc\u5236\u7d04\uff09\u3092\u5b9a\u7fa9\u3059\u308b\u3068\u3001\u305d\u306e\u5217\uff08\u307e\u305f\u306f\u5217\u306e\u7d44\u5408\u305b\uff09\u306b\u306f\u3001\u91cd\u8907\u3057\u305f\u5024\u3092\u683c\u7d0d\u3067\u304d\u306a\u3044\u304c\u3001NULL\u5024\u3092\u542b\u3080\u3053\u3068\u306f\u3067\u304d\u308b\u3002
\u30fbUNIQUE\u5236\u7d04\u3092\u5b9a\u7fa9\u3059\u308b\u3068\u81ea\u52d5\u7684\u306b\u5236\u7d04\u3068\u540c\u3058\u540d\u524d\u306e\u4e00\u610f\u7d22\u5f15\u304c\u4f5c\u6210\u3055\u308c\u308b\u3002
\u30fb\u5217\u306e\u7d44\u5408\u305b\u306b\u5bfe\u3057\u3066\u3001UNIQUE\u5236\u7d04\u3092\u5b9a\u7fa9\u3059\u308b\u5834\u5408\u306f\u3001\u8868\u30ec\u30d9\u30eb\u5236\u7d04\u306e\u69cb\u6587\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002
\u30fbPRIMARY key\u5236\u7d04\uff08\u4e3b\u30ad\u30fc\u5236\u7d04\uff09\u3092\u5b9a\u7fa9\u3059\u308b\u3068\u3001\u305d\u306e\u5217\uff08\u307e\u305f\u306f\u5217\u306e\u7d44\u5408\u305b\uff09\u306b\u306f\u3001\u91cd\u8907\u3057\u305f\u5024\u3084NULL\u5024\u3092\u683c\u7d0d\u3067\u304d\u306a\u3044\u3002
\u30fbFOREIGN KEY\u5236\u7d04\uff08\u5916\u90e8\u30ad\u30fc\u5236\u7d04\uff09\u3092\u5b9a\u7fa9\u3059\u308b\u3068\u3001\u305d\u306e\u5217\u306b\u306f\u3001\u53c2\u7167\u5148\u306e\u5217\u306b\u5b58\u5728\u3059\u308b\u5024\u3057\u304b\u683c\u7d0d\u3067\u304d\u306a\u3044\u3002
\u30fbFOREIGN KEY\u5236\u7d04\uff08\u5916\u90e8\u30ad\u30fc\u5236\u7d04\uff09\u3092\u5b9a\u7fa9\u3057\u3066\u3082\u3001NULL\u5024\u3092\u8a2d\u5b9a\u3067\u304d\u308b\u3002
\u30fbFOREIGN KEY\u5236\u7d04\u306f\u3001UNIQUE\u5236\u7d04\u307e\u305f\u306f\u3001PRIMARY KEY\u5236\u7d04\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u5217\u3057\u304b\u53c2\u7167\u3067\u304d\u306a\u3044\u3002
\u30fbCHECK\u5236\u7d04\u3092\u5b9a\u7fa9\u3059\u308b\u3068\u3001\u305d\u306e\u5217\u306b\u306f\u3001\u6307\u5b9a\u3057\u305f\u6761\u4ef6\u306b\u5bfe\u3057\u3066\u3001TRUE\u307e\u305f\u306f\u3001NULL\u3092\u623b\u3059\u5024\u3057\u304b\u683c\u7d0d\u3067\u304d\u306a\u3044\u3002<\/p>\n\n\n\n
\u30fbCHECK\u5236\u7d04\u306e\u6761\u4ef6\u306b\u306f\u3001\u4e00\u90e8\u306e\u6307\u5b9a\u3092\u9664\u304d\u3001\u57fa\u672c\u7684\u306bWHERE\u53e5\u306b\u6307\u5b9a\u3067\u304d\u308b\u6761\u4ef6\u3068\u540c\u69d8\u306e\u6307\u5b9a\u3092\u884c\u3048\u308b\u3002
\u30fbCHECK\u5236\u7d04\u306f\u3001\uff11\u3064\u306e\u5217\u306b\u8907\u6570\u5b9a\u7fa9\u3067\u304d\u308b\u3002
\u30fbCHECK\u5236\u7d04\u306e\u5b9a\u7fa9\u306b\u306f\u3001\u6b21\u306e\u5f0f\u306f\u4f7f\u7528\u3067\u304d\u306a\u3044\u3002
\u30fbCURRVAL\u3001NEXTVAL,LEVEL\u3001ROWNUM\u7591\u4f3c\u5217\u306e\u53c2\u7167
\u30fbSYSDATE\u3001UID\u3001USER\u3001USERENV\u95a2\u6570\u306e\u547c\u3073\u51fa\u3057\u3002
\u30fb\u4ed6\u306e\u884c\u306e\u5024\u3092\u53c2\u7167\u3059\u308b\u554f\u5408\u305b
\u30fb\u526f\u554f\u5408\u305b\u3092\u4f7f\u7528\u3057\u305f\u8868\u306e\u4f5c\u6210\u3067\u306f\u3001\u30c7\u30fc\u30bf\u578b\u3068NOT NULL\u5236\u7d04\u306f\u3001\u65b0\u3057\u3044\u8868\u306b\u30b3\u30d4\u30fc\u3055\u308c\u3001NOT NULL\u5236\u7d04\u4ee5\u5916\u306e\u5236\u7d04\u306f\u3001\u30b3\u30d4\u30fc\u3055\u308c\u306a\u3044\u3002
\u30fb\u526f\u554f\u5408\u305b\u306eSELECT\u53e5\u3067\u8a08\u7b97\u5f0f\u3084\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u660e\u793a\u7684\u306b\u5217\u540d\uff08\u5217\u5225\u540d\uff09\u3092\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002
\u30fb\u65e2\u5b58\u306e\u8868\u306e\u69cb\u9020\u3092\u5909\u66f4\u3059\u308b\u5834\u5408\u306f\u3001ALTER TABLE\u6587\u3092\u4f7f\u7528\u3059\u308b\u3002
\u30fb\u65e2\u5b58\u306e\u8868\u306b\u5217\u3092\u8ffd\u52a0\u3067\u304d\u308b\uff08ALTER TABLE\u6587\u3067ADD\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u3046\uff09
\u30fb\u65e2\u5b58\u306e\u30c7\u30fc\u30bf\u304c\u6709\u308b\u8868\u306b\u5217\u3092\u8ffd\u52a0\u3059\u308b\u3068\u3001\u65e2\u5b58\u306e\u884c\u306e\u65b0\u3057\u3044\u5217\u306e\u5024\u306f\u3001DEFAULT\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u6307\u5b9a\u3057\u305f\u5024\u304b\u3001NULL\u306b\u306a\u308b\u3002
\u30fb\u65e2\u5b58\u306e\u30c7\u30fc\u30bf\u304c\u5236\u7d04\u306e\u30eb\u30fc\u30eb\u3092\u6e80\u305f\u3057\u3066\u3044\u308c\u3070\u3001\u65e2\u5b58\u306e\u8868\u306b\u5236\u7d04\u3092\u8ffd\u52a0\u3067\u304d\u308b\u3002
\u30fb\u65b0\u3057\u304f\u8ffd\u52a0\u3059\u308b\u5217\u306bNOT NULL\u5236\u7d04\u3092\u8ffd\u52a0\u3067\u304d\u308b\u306e\u306f\u3001\u8868\u304c\u7a7a\u306e\u5834\u5408\u304b\u3001DEFAULT\u30aa\u30d7\u30b7\u30e7\u30f3\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3067\u3042\u308b\u3002
\u30fb\u65e2\u5b58\u306e\u5217\u306e\u30c7\u30fc\u30bf\u578b\u3001\u30b5\u30a4\u30ba\u3001\u304a\u3088\u3073\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306f\u3001\u5909\u66f4\u3067\u304d\u308b\uff08ALTER TABLE\u6587\u3067MODIFY\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u3046\uff09
\u30fb\u30b5\u30a4\u30ba\u307e\u305f\u306f\u7cbe\u5ea6\u306e\u5897\u52a0\u306f\u3044\u3064\u3067\u3082\u3067\u304d\u308b\u3002
\u30fb\u5217\u306e\u30b5\u30a4\u30ba\u306f\u3001\u6b21\u306e\u5834\u5408\u306e\u307f\u6e1b\u5c11\u3067\u304d\u308b\u3002
\u30fb\u5217\u306bNULL\u5024\u306e\u307f\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u3002
\u30fb\u8868\u306b\u884c\u304c\u306a\u3044\u3002
\u30fb\u5217\u306e\u30b5\u30a4\u30ba\u306f\u3001\u65e2\u5b58\u306e\u5217\u306e\u5024\u672a\u6e80\u306b\u306f\u6e1b\u5c11\u3067\u304d\u306a\u3044\u3002
\u30fb\u5217\u306bNULL\u5024\u306e\u307f\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u30c7\u30fc\u30bf\u578b\u3092\u5909\u66f4\u3067\u304d\u308b\u3002
\u30fb\u5217\u306bNULL\u5024\u4ee5\u5916\u306e\u30c7\u30fc\u30bf\u304c\u542b\u307e\u308c\u3066\u3044\u3066\u3082\u3001\u30b5\u30a4\u30ba\u3092\u5909\u66f4\u3057\u306a\u3044\u5834\u5408\u306f\u3001CHAR\u578b\u304b\u3089VARCHAR2\u578b\u3001\u307e\u305f\u306f\u3001VARCHAR\uff12\u578b\u304b\u3089CHAR\u578b\u3078\u306f\u30c7\u30fc\u30bf\u578b\u3092\u5909\u66f4\u3067\u304d\u308b\u3002
\u30fb\u30b5\u30a4\u30ba\u3092\u5927\u304d\u304f\u3059\u308b\u5909\u66f4\u306f\u3001\u3044\u3064\u3067\u3082\u53ef\u80fd\u3002
\u30fb\u30b5\u30a4\u30ba\u3092\u5c0f\u3055\u304f\u3059\u308b\u5909\u66f4\u306f\u3001\u65e2\u5b58\u306e\u30c7\u30fc\u30bf\u304c\u5165\u3089\u306a\u304f\u306a\u308b\u3088\u3046\u306a\u30b5\u30a4\u30ba\u3078\u306e\u5909\u66f4\u306f\u3067\u304d\u306a\u3044\u3002
\u30fb\u5217\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306e\u5909\u66f4\u306f\u3001\u4ee5\u5f8c\u306e\u8c79\u3078\u306e\u633f\u5165\u306e\u307f\u306b\u9069\u7528\u3055\u308c\u308b\u3002
\u30fb\u5217\u3092\u524a\u9664\u3057\u305f\u5f8c\u3082\u3001\u8868\u306b\u306f\uff11\u3064\u4ee5\u4e0a\u306e\u5217\u3092\u6b8b\u3059\u5fc5\u8981\u304c\u3042\u308b\u3002
\u30fb\u5217\u306e\u524a\u9664\u306f\u3082\u3068\u306b\u623b\u305b\u306a\u3044\u3002
\u30fb\u5225\u306e\u5217\u304b\u3089\u53c2\u7167\u3055\u308c\u308b\u4e3b\u30ad\u30fc\u306f\u3001CASCADE\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u6307\u5b9a\u3057\u306a\u3044\u9650\u308a\u524a\u9664\u3067\u304d\u306a\u3044\u3002
\u30fb\uff11\u5ea6\u306b\uff11\u3064\u306e\u5217\u306e\u307f\u3092\u524a\u9664\u3059\u308b\u5834\u5408\u306f\u3001ALTER TABLE DROP COLUMN\u6587\u3082\u4f7f\u7528\u3067\u304d\u308b\u3002
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