{"id":470,"date":"2009-12-19T23:11:00","date_gmt":"2009-12-19T14:11:00","guid":{"rendered":"http:\/\/www.code-life.jp\/blog\/archives\/470"},"modified":"2010-08-16T13:27:20","modified_gmt":"2010-08-16T04:27:20","slug":"mysql%e3%81%a7oracle%e3%81%aerownum%e3%81%ae%e3%82%88%e3%81%86%e3%81%aa%e8%a1%8c%e7%95%aa%e5%8f%b7%e3%82%92%e4%bb%98%e5%8a%a0%e3%81%99%e3%82%8b","status":"publish","type":"post","link":"https:\/\/www.code-life.jp\/blog\/2009\/12\/19\/mysql%e3%81%a7oracle%e3%81%aerownum%e3%81%ae%e3%82%88%e3%81%86%e3%81%aa%e8%a1%8c%e7%95%aa%e5%8f%b7%e3%82%92%e4%bb%98%e5%8a%a0%e3%81%99%e3%82%8b\/","title":{"rendered":"MySQL\u3067Oracle\u306erownum\u306e\u3088\u3046\u306a\u884c\u756a\u53f7\u3092\u4ed8\u52a0\u3059\u308b"},"content":{"rendered":"

MySQL\u3067Oracle\u306erownum\u306e\u3088\u3046\u306a\u884c\u756a\u53f7\u3092\u4ed8\u52a0\u3059\u308b\u65b9\u6cd5\u3068\u3057\u3066\u3001Web\u4e0a\u3067\u3088\u304f\u898b\u304b\u3051\u308b\u306e\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30e6\u30fc\u30b6\u30fc\u5909\u6570\u3092\u4f7f\u3063\u305fSQL\u6587\u3067\u30012\u3064\u306eSQL\u6587\u3092\u767a\u884c\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002<\/p>\n

set @i:=0;\r\nselect @i:=@i+1 as rownum,user_id from user;<\/pre>\n
\u3057\u304b\u3057\u3001kotori::log<\/a>\u3067\u7d39\u4ecb\u3055\u308c\u3066\u3044\u305f\u65b9\u6cd5\u3092\u7528\u3044\u308c\u3070\u3001\uff11\u56de\u306eSQL\u6587\u3067\u4ed8\u52a0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u30e1\u30e2\u30e1\u30e2\u3002<\/p>\n
select @i:=@i+1 as rownum,user_id from (select @i:=0) as dummy,user;<\/pre>\n
\u306a\u308b\u307b\u3069\u3002\u30b5\u30d6\u30af\u30a8\u30ea\u3067\u30e6\u30fc\u30b6\u30fc\u5909\u6570\u3092\u521d\u671f\u5316\u3057\u3066\u3044\u308b\u306e\u306d\u3002<\/p>\n
\u3067\u3001\u3075\u3068order by\u7bc0\u3067\u4e26\u3073\u66ff\u3048\u305f\u6642\u306e\u6319\u52d5\u304c\u6c17\u306b\u306a\u3063\u305f\u306e\u3067\u3001\u65e9\u901f\u8a66\u3057\u3066\u307f\u305f\u3002<\/p>\n
\u5168\u90e8\u3067\uff14\u3064\u8a66\u3057\u3066\u3044\u3066\u3001\u59cb\u3081\u306e\uff12\u3064\u304c\u30c6\u30fc\u30d6\u30eb\u306eid\u30ab\u30e9\u30e0\u3067\u4e26\u3073\u66ff\u3048(\u6607\u9806\u3001\u964d\u9806)\u3001\u6b8b\u308a\u306e\uff12\u3064(\uff13\u3064\u76ee\u3068\uff14\u3064\u76ee)\u304c\u751f\u6210\u3057\u305frownum\u3067\u4e26\u3073\u66ff\u3048\u305f\u3082\u306e\u3067\u3042\u308b\u3002<\/p>\n
\uff11\u3064\u76ee\u3002<\/p>\n
mysql>\u00a0 select @i := @i + 1 rownum, id\r\n\u00a0 \u00a0 ->\u00a0 from (select @i := 0) dummy, tablename\r\n\u00a0 \u00a0 ->\u00a0 order by id asc;\r\n+--------+----+\r\n| rownum | id |\r\n+--------+----+\r\n|\u00a0 \u00a0\u00a0 \u00a01 |\u00a0 2 |\r\n|\u00a0 \u00a0\u00a0 \u00a02 |\u00a0 3 |\r\n|\u00a0 \u00a0\u00a0 \u00a03 |\u00a0 5 |\r\n|\u00a0 \u00a0\u00a0 \u00a04 |\u00a0 7 |\r\n|\u00a0 \u00a0\u00a0 \u00a05 | 11 |\r\n+--------+----+\r\n5 rows in set (0.00 sec)<\/pre>\n
\uff12\u3064\u76ee\u3002<\/p>\n
mysql>\u00a0 select @i := @i + 1 rownum, id\r\n\u00a0 \u00a0 ->\u00a0 from (select @i:= 0) dummy, tablename\r\n\u00a0 \u00a0 ->\u00a0 order by id desc;\r\n+--------+----+\r\n| rownum | id |\r\n+--------+----+\r\n|\u00a0 \u00a0\u00a0 \u00a01 | 11 |\r\n|\u00a0 \u00a0\u00a0 \u00a02 |\u00a0 7 |\r\n|\u00a0 \u00a0\u00a0 \u00a03 |\u00a0 5 |\r\n|\u00a0 \u00a0\u00a0 \u00a04 |\u00a0 3 |\r\n|\u00a0 \u00a0\u00a0 \u00a05 |\u00a0 2 |\r\n+--------+----+\r\n5 rows in set (0.00 sec)<\/pre>\n
\uff13\u3064\u76ee<\/p>\n
mysql>\u00a0 select @i := @i + 1 rownum, id\r\n\u00a0 \u00a0 ->\u00a0 from (select @i := 0) dummy, tablename\r\n\u00a0 \u00a0 ->\u00a0 order by rownum asc;\r\n+--------+----+\r\n| rownum | id |\r\n+--------+----+\r\n|\u00a0 \u00a0\u00a0 \u00a01 |\u00a0 2 |\r\n|\u00a0 \u00a0\u00a0 \u00a02 |\u00a0 3 |\r\n|\u00a0 \u00a0\u00a0 \u00a03 |\u00a0 5 |\r\n|\u00a0 \u00a0\u00a0 \u00a04 |\u00a0 7 |\r\n|\u00a0 \u00a0\u00a0 \u00a05 | 11 |\r\n+--------+----+\r\n5 rows in set (0.00 sec)<\/pre>\n
\uff14\u3064\u76ee<\/p>\n
mysql>\u00a0 select @i := @i + 1 rownum, id\r\n\u00a0 \u00a0 ->\u00a0 from (select @i := 0) dummy, tablename\r\n\u00a0 \u00a0 ->\u00a0 order by rownum desc;\r\n+--------+----+\r\n| rownum | id |\r\n+--------+----+\r\n|\u00a0 \u00a0\u00a0 \u00a05 | 11 |\r\n|\u00a0 \u00a0\u00a0 \u00a04 |\u00a0 7 |\r\n|\u00a0 \u00a0\u00a0 \u00a03 |\u00a0 5 |\r\n|\u00a0 \u00a0\u00a0 \u00a02 |\u00a0 3 |\r\n|\u00a0 \u00a0\u00a0 \u00a01 |\u00a0 2 |\r\n+--------+----+\r\n5 rows in set (0.00 sec)<\/pre>\n
\u3046\uff5e\u3093\u3002\uff12\u3064\u76ee\u306eSQL\u6587\u306e\u7d50\u679c\u304c\u4e88\u60f3\u3057\u3066\u3044\u305f\u7d50\u679c\u3068\u7570\u306a\u3063\u3066\u3044\u308b\u3002\u4e88\u60f3\u3057\u3066\u3044\u305f\u7d50\u679c\u306f\uff14\u3064\u76ee\u306eSQL\u6587\u3068\u540c\u69d8\u306e\u7d50\u679c\u3060\u3063\u305f\u306e\u3060\u3051\u308c\u3069\u2026\u2026\u3002<\/p>\n
Oracle\u3067\u4ee5\u4e0b\u306e\u3088\u3046\u306aSQL\u6587\u3092\u66f8\u3044\u3066\u78ba\u8a8d\u3057\u3066\u307f\u305f\u304c\u3001\u3069\u3061\u3089\u3082\uff14\u3064\u76ee\u3068\u540c\u3058\u7d50\u679c\u3002<\/p>\n
 select rownum, id from tablename order by id desc;\r\n\u00a0select rownum, id from tablename order by rownum desc;<\/pre>\n
\u3068\u306a\u308b\u3068\uff12\u3064\u76ee\u306eSQL\u6587\u306f\u3001\uff14\u3064\u76ee\u306eSQL\u3068\u6bd4\u3079\u3066<\/p>\n
@i := @i + 1 rownum<\/pre>\n
\u3092\u8a55\u4fa1\u3059\u308b\u30bf\u30a4\u30df\u30f3\u30b0\u304c\u9055\u3046\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308b\u3002<\/p>\n
\uff12\u3064\u76ee\u306eSQL\u6587\u3067\u306f\u3001id\u30ab\u30e9\u30e0\u3067\u4e26\u3073\u66ff\u3048\u305f\u5f8c\u306b\u8a55\u4fa1\u3055\u308c\u3066\u3044\u308b\u3088\u3046\u306b\u898b\u3048\u308b\u3002<\/p>\n
\u3068\u3044\u3046\u308f\u3051\u3067\u8abf\u3079\u3066\u307f\u305f\u3068\u3053\u308d\u3001MySQL\u306e\u30b5\u30a4\u30c8\u306e8.4. \u30e6\u30fc\u30b6\u306b\u3088\u3063\u3066\u5b9a\u7fa9\u3055\u308c\u305f\u5909\u6570<\/a>\u306e\u30da\u30fc\u30b8\u3067\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u8aac\u660e\u304c\u3002<\/p>\n
\n
\u30e6\u30fc\u30b6\u5909\u6570\u306e\u8a55\u4fa1\u9806\u5e8f\u306f\u5b9a\u7fa9\u3055\u308c\u3066\u304a\u3089\u305a\u3001\u4e0e\u3048\u3089\u308c\u305f\u30af\u30a8\u30ea\u5185\u306e\u8981\u7d20\u306b\u57fa\u3065\u3044\u3066\u5909\u66f4\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002SELECT @a, @a := @a+1 ...<\/code>\u3067\u306f\u3001MySQL\u306f@a<\/code>\u3092\u5148\u306b\u8a55\u4fa1\u3057\u6b21\u306b\u5272\u308a\u5f53\u3066\u304c\u5b9f\u884c\u3055\u308c\u308b\u3088\u3046\u306b\u898b\u3048\u307e\u3059\u304c\u3001\u30af\u30a8\u30ea\u306e\u5909\u66f4\uff08\u4f8b\u3048\u3070GROUP BY<\/code>\u3001HAVING<\/code>\u307e\u305f\u306fORDER BY<\/code>\u7bc0\u306b\u3088\u308b\u5909\u66f4\uff09\u306f\u8a55\u4fa1\u9806\u5e8f\u3092\u5909\u66f4\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/blockquote>\n
\u3053\u306e\u30a8\u30f3\u30c8\u30ea\u3067\u7d39\u4ecb\u3057\u305frownum\u3082\u3069\u304d\u306f\u3001\u4f7f\u7528\u3059\u308b\u6642\u306b\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u306a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
MySQL\u3067Oracle\u306erownum\u306e\u3088\u3046\u306a\u884c\u756a\u53f7\u3092\u4ed8\u52a0\u3059\u308b\u65b9\u6cd5\u3068\u3057\u3066\u3001Web\u4e0a\u3067\u3088\u304f\u898b\u304b\u3051\u308b\u306e\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30e6\u30fc\u30b6\u30fc\u5909\u6570\u3092\u4f7f\u3063\u305fSQL\u6587\u3067\u30012\u3064\u306eSQL\u6587\u3092\u767a\u884c\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002 set @i:=0; select… \u7d9a\u304d\u3092\u8aad\u3080 MySQL\u3067Oracle\u306erownum\u306e\u3088\u3046\u306a\u884c\u756a\u53f7\u3092\u4ed8\u52a0\u3059\u308b<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[11],"tags":[],"_links":{"self":[{"href":"https:\/\/www.code-life.jp\/blog\/wp-json\/wp\/v2\/posts\/470"}],"collection":[{"href":"https:\/\/www.code-life.jp\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.code-life.jp\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.code-life.jp\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.code-life.jp\/blog\/wp-json\/wp\/v2\/comments?post=470"}],"version-history":[{"count":3,"href":"https:\/\/www.code-life.jp\/blog\/wp-json\/wp\/v2\/posts\/470\/revisions"}],"predecessor-version":[{"id":826,"href":"https:\/\/www.code-life.jp\/blog\/wp-json\/wp\/v2\/posts\/470\/revisions\/826"}],"wp:attachment":[{"href":"https:\/\/www.code-life.jp\/blog\/wp-json\/wp\/v2\/media?parent=470"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.code-life.jp\/blog\/wp-json\/wp\/v2\/categories?post=470"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.code-life.jp\/blog\/wp-json\/wp\/v2\/tags?post=470"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}