{"id":185308,"date":"2024-11-10T20:28:18","date_gmt":"2024-11-10T12:28:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/185308\/"},"modified":"2024-11-10T20:28:19","modified_gmt":"2024-11-10T12:28:19","slug":"%e4%bd%bf%e7%94%a8sql%e4%b8%ad%e7%9a%84row_number%e5%92%8cwhile%e5%be%aa%e7%92%b0%e5%b0%8d%e6%af%8f%e4%b8%80%e8%a1%8c%e5%9f%b7%e8%a1%8c%e6%93%8d%e4%bd%9c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/185308\/","title":{"rendered":"\u4f7f\u7528SQL\u4e2d\u7684ROW_NUMBER()\u548cwhile\u5faa\u74b0\u5c0d\u6bcf\u4e00\u884c\u57f7\u884c\u64cd\u4f5c"},"content":{"rendered":"<h1 id=\"%e4%bd%bf%e7%94%a8sql%e4%b8%ad%e7%9a%84row_number%e5%92%8cwhile%e5%be%aa%e7%92%b0%e5%b0%8d%e6%af%8f%e4%b8%80%e8%a1%8c%e5%9f%b7%e8%a1%8c%e6%93%8d%e4%bd%9c-jHYaxtrNGc\">\u4f7f\u7528SQL\u4e2d\u7684ROW_NUMBER()\u548cWHILE\u5faa\u74b0\u5c0d\u6bcf\u4e00\u884c\u57f7\u884c\u64cd\u4f5c<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0cSQL\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u67e5\u8a62\u8a9e\u8a00\uff0c\u80fd\u5920\u6709\u6548\u5730\u8655\u7406\u548c\u64cd\u4f5c\u6578\u64da\u3002\u7576\u9700\u8981\u5c0d\u67e5\u8a62\u7d50\u679c\u7684\u6bcf\u4e00\u884c\u57f7\u884c\u7279\u5b9a\u64cd\u4f5c\u6642\uff0c\u4f7f\u7528 <code>ROW_NUMBER()<\/code> \u51fd\u6578\u7d50\u5408 <code>WHILE<\/code> \u5faa\u74b0\u662f\u4e00\u7a2e\u5e38\u898b\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u5728SQL\u4e2d\u4f7f\u7528\u9019\u5169\u7a2e\u6280\u8853\u4f86\u9054\u6210\u9019\u4e00\u76ee\u7684\u3002<\/p>\n<h2 id=\"row_number-%e5%87%bd%e6%95%b8%e6%a6%82%e8%bf%b0-jHYaxtrNGc\">ROW_NUMBER() \u51fd\u6578\u6982\u8ff0<\/h2>\n<p><code>ROW_NUMBER()<\/code> \u662f\u4e00\u500b\u7a97\u53e3\u51fd\u6578\uff0c\u7528\u65bc\u70ba\u67e5\u8a62\u7d50\u679c\u96c6\u4e2d\u7684\u6bcf\u4e00\u884c\u5206\u914d\u4e00\u500b\u552f\u4e00\u7684\u5e8f\u865f\u3002\u9019\u500b\u5e8f\u865f\u662f\u6839\u64da\u6307\u5b9a\u7684\u6392\u5e8f\u898f\u5247\u751f\u6210\u7684\uff0c\u901a\u5e38\u7528\u65bc\u9700\u8981\u5c0d\u7d50\u679c\u96c6\u9032\u884c\u5206\u7d44\u6216\u6392\u5e8f\u7684\u60c5\u6cc1\u3002<\/p>\n<h3 id=\"row_number-%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-jHYaxtrNGc\">ROW_NUMBER() \u7684\u57fa\u672c\u8a9e\u6cd5<\/h3>\n<pre><code>SELECT \n    ROW_NUMBER() OVER (ORDER BY column_name) AS row_num,\n    column1,\n    column2\nFROM \n    table_name;\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c<code>column_name<\/code> \u662f\u7528\u4f86\u6392\u5e8f\u7684\u5217\uff0c<code>table_name<\/code> \u662f\u67e5\u8a62\u7684\u6578\u64da\u8868\u3002\u9019\u6a23\u7684\u67e5\u8a62\u5c07\u8fd4\u56de\u4e00\u500b\u5305\u542b\u884c\u865f\u7684\u7d50\u679c\u96c6\u3002<\/p>\n<h2 id=\"while-%e5%be%aa%e7%92%b0%e7%9a%84%e4%bd%bf%e7%94%a8-jHYaxtrNGc\">WHILE \u5faa\u74b0\u7684\u4f7f\u7528<\/h2>\n<p>\u5728SQL\u4e2d\uff0c<code>WHILE<\/code> \u5faa\u74b0\u53ef\u4ee5\u7528\u4f86\u91cd\u8907\u57f7\u884c\u4e00\u6bb5\u4ee3\u78bc\uff0c\u76f4\u5230\u6eff\u8db3\u7279\u5b9a\u689d\u4ef6\u70ba\u6b62\u3002\u9019\u5728\u9700\u8981\u5c0d\u67e5\u8a62\u7d50\u679c\u96c6\u4e2d\u7684\u6bcf\u4e00\u884c\u9032\u884c\u64cd\u4f5c\u6642\u975e\u5e38\u6709\u7528\u3002<\/p>\n<h3 id=\"while-%e5%be%aa%e7%92%b0%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-jHYaxtrNGc\">WHILE \u5faa\u74b0\u7684\u57fa\u672c\u8a9e\u6cd5<\/h3>\n<pre><code>DECLARE @counter INT = 1;\nDECLARE @max INT;\n\nSELECT @max = COUNT(*) FROM table_name;\n\nWHILE @counter &lt;= @max\nBEGIN\n    -- \u57f7\u884c\u64cd\u4f5c\n    SET @counter = @counter + 1;\nEND\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c<code>@counter<\/code> \u7528\u65bc\u8ddf\u8e2a\u7576\u524d\u884c\u865f\uff0c\u800c <code>@max<\/code> \u5247\u662f\u7d50\u679c\u96c6\u7684\u7e3d\u884c\u6578\u3002\u7576 <code>@counter<\/code> \u5c0f\u65bc\u6216\u7b49\u65bc <code>@max<\/code> \u6642\uff0c\u5faa\u74b0\u5c07\u6301\u7e8c\u57f7\u884c\u3002<\/p>\n<h2 id=\"%e7%b5%90%e5%90%88%e4%bd%bf%e7%94%a8-row_number-%e5%92%8c-while-%e5%be%aa%e7%92%b0-jHYaxtrNGc\">\u7d50\u5408\u4f7f\u7528 ROW_NUMBER() \u548c WHILE \u5faa\u74b0<\/h2>\n<p>\u5c07 <code>ROW_NUMBER()<\/code> \u548c <code>WHILE<\/code> \u5faa\u74b0\u7d50\u5408\u4f7f\u7528\uff0c\u53ef\u4ee5\u5c0d\u6bcf\u4e00\u884c\u57f7\u884c\u7279\u5b9a\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5c0d\u6bcf\u4e00\u884c\u9032\u884c\u66f4\u65b0\u64cd\u4f5c\uff1a<\/p>\n<pre><code>DECLARE @counter INT = 1;\nDECLARE @max INT;\n\nSELECT @max = COUNT(*) FROM (SELECT ROW_NUMBER() OVER (ORDER BY id) AS row_num FROM table_name) AS temp;\n\nWHILE @counter &lt;= @max\nBEGIN\n    UPDATE table_name\n    SET column_name = 'new_value'\n    WHERE id = (SELECT id FROM (SELECT id, ROW_NUMBER() OVER (ORDER BY id) AS row_num FROM table_name) AS temp WHERE row_num = @counter);\n    \n    SET @counter = @counter + 1;\nEND\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u9996\u5148\u8a08\u7b97\u51fa\u7d50\u679c\u96c6\u7684\u7e3d\u884c\u6578\uff0c\u7136\u5f8c\u4f7f\u7528 <code>WHILE<\/code> \u5faa\u74b0\u9010\u884c\u66f4\u65b0 <code>table_name<\/code> \u8868\u4e2d\u7684 <code>column_name<\/code> \u5217\u3002\u9019\u7a2e\u65b9\u6cd5\u96d6\u7136\u6709\u6548\uff0c\u4f46\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u554f\u984c\uff0c\u56e0\u6b64\u5728\u5be6\u969b\u61c9\u7528\u4e2d\u9700\u8981\u8b39\u614e\u4f7f\u7528\u3002<\/p>\n<h2 id=\"%e6%80%a7%e8%83%bd%e8%80%83%e9%87%8f-jHYaxtrNGc\">\u6027\u80fd\u8003\u91cf<\/h2>\n<p>\u5728\u4f7f\u7528 <code>ROW_NUMBER()<\/code> \u548c <code>WHILE<\/code> \u5faa\u74b0\u6642\uff0c\u6027\u80fd\u662f\u4e00\u500b\u91cd\u8981\u7684\u8003\u91cf\u56e0\u7d20\u3002\u5c0d\u65bc\u5927\u6578\u64da\u96c6\uff0c\u9019\u7a2e\u65b9\u6cd5\u53ef\u80fd\u6703\u5c0e\u81f4\u8f03\u9577\u7684\u57f7\u884c\u6642\u9593\u3002\u5efa\u8b70\u5728\u53ef\u80fd\u7684\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528\u6279\u91cf\u64cd\u4f5c\u6216\u5176\u4ed6\u66f4\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\u65b9\u6cd5\u4f86\u66ff\u4ee3\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-jHYaxtrNGc\">\u7e3d\u7d50<\/h2>\n<p>\u4f7f\u7528 <code>ROW_NUMBER()<\/code> \u548c <code>WHILE<\/code> \u5faa\u74b0\u53ef\u4ee5\u6709\u6548\u5730\u5c0dSQL\u67e5\u8a62\u7d50\u679c\u96c6\u4e2d\u7684\u6bcf\u4e00\u884c\u57f7\u884c\u64cd\u4f5c\u3002\u96d6\u7136\u9019\u7a2e\u65b9\u6cd5\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u975e\u5e38\u6709\u7528\uff0c\u4f46\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u9700\u8981\u8003\u616e\u6027\u80fd\u554f\u984c\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\u3002\u82e5\u60a8\u5c0d <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u6216\u5176\u4ed6 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u89e3\u6c7a\u65b9\u6848\u611f\u8208\u8da3\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728SQL\u4e2d\u4f7f\u7528ROW_NUMBER()\u51fd\u6578\u548cwhile\u5faa\u74b0\u5c0d\u6bcf\u4e00\u884c\u6578\u64da\u57f7\u884c\u64cd\u4f5c\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-185308","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/185308","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=185308"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/185308\/revisions"}],"predecessor-version":[{"id":185309,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/185308\/revisions\/185309"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=185308"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=185308"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=185308"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}