{"id":5186,"date":"2024-11-14T09:01:45","date_gmt":"2024-11-14T01:01:45","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5186\/"},"modified":"2024-11-14T09:01:45","modified_gmt":"2024-11-14T01:01:45","slug":"sql%e4%b8%adrownum%e7%9a%84%e7%94%a8%e6%b3%95","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5186\/","title":{"rendered":"sql\u4e2drownum\u7684\u7528\u6cd5"},"content":{"rendered":"<blockquote><p>\n  sql \u4e2d rownum \u662f\u8fd4\u56de\u884c\u5e8f\u53f7\u7684\u4f2a\u5217\uff0c\u7528\u4e8e\u6392\u5e8f\u6216\u57fa\u4e8e\u884c\u9650\u5236\u6570\u636e\u3002\u8bed\u6cd5\u4e3a\uff1aselect column_list, rownum from table_name [where condition] [order by column_name]\uff0c\u5176\u4e2d column_list \u662f\u8981\u9009\u62e9\u7684\u5217\uff0ctable_name \u662f\u8981\u67e5\u8be2\u7684\u8868\uff0cwhere condition \u662f\u53ef\u9009\u7684\u7b5b\u9009\u6761\u4ef6\uff0corder by column_name \u662f\u53ef\u9009\u7684\u6392\u5e8f\u6761\u4ef6\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202405\/24\/2024052419152894548.jpg\" class=\"aligncenter\" title=\"sql\u4e2drownum\u7684\u7528\u6cd5\u63d2\u56fe\" alt=\"sql\u4e2drownum\u7684\u7528\u6cd5\u63d2\u56fe\" \/><\/p>\n<p><strong>SQL \u4e2d ROWNUM \u7528\u6cd5<\/strong><\/p>\n<p>ROWNUM \u662f SQL \u4e2d\u4e00\u4e2a\u4f2a\u5217\uff0c\u7528\u4e8e\u8fd4\u56de\u5f53\u524d\u884c\u5728\u7ed3\u679c\u96c6\u4e2d\u7684\u884c\u7684\u5e8f\u53f7\u3002\u5b83\u5e38\u7528\u4e8e\u5bf9\u6570\u636e\u8fdb\u884c\u6392\u5e8f\u6216\u8fdb\u884c\u57fa\u4e8e\u884c\u7684\u9650\u5236\u3002<\/p>\n<p><strong>\u7528\u6cd5<\/strong><\/p>\n<p>\u8bed\u6cd5\uff1aSELECT column_list, ROWNUM<br \/>FROM table_name<br \/>[WHERE condition]<br \/>[ORDER BY column_name]<\/p>\n<p><strong>\u53c2\u6570<\/strong><\/p>\n<ul>\n<li> <strong>column_list\uff1a<\/strong>\u8981\u9009\u62e9\u7684\u5217<\/li>\n<li> <strong>table_name\uff1a<\/strong>\u8981\u67e5\u8be2\u7684\u8868<\/li>\n<li> <strong>WHERE condition\uff1a<\/strong>\u53ef\u9009\uff0c\u7528\u4e8e\u8fc7\u6ee4\u7ed3\u679c<\/li>\n<li> <strong>ORDER BY column_name\uff1a<\/strong>\u53ef\u9009\uff0c\u7528\u4e8e\u5bf9\u7ed3\u679c\u8fdb\u884c\u6392\u5e8f<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b<\/strong><\/p>\n<p>\u4ee5\u4e0b\u793a\u4f8b\u83b7\u53d6\u5458\u5de5\u8868\u4e2d\u6240\u6709\u5458\u5de5\u7684\u59d3\u540d\u548c\u884c\u5e8f\u53f7\uff1a<\/p>\n<pre>SELECT name, ROWNUM\nFROM employees;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0b\u793a\u4f8b\u83b7\u53d6\u5458\u5de5\u8868\u4e2d\u5de5\u8d44\u6700\u9ad8\u7684 5 \u540d\u5458\u5de5\u7684\u59d3\u540d\u548c\u884c\u5e8f\u53f7\uff1a<\/p>\n<pre>SELECT name, ROWNUM\nFROM employees\nORDER BY salary DESC\nLIMIT 5;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n<ul>\n<li>ROWNUM \u5728\u6bcf\u4e2a\u7ed3\u679c\u96c6\u4e2d\u90fd\u662f\u552f\u4e00\u7684\u4e14\u8fde\u7eed\u7684\u3002<\/li>\n<li>ROWNUM \u7684\u503c\u4ece 1 \u5f00\u59cb\u3002<\/li>\n<li>ROWNUM \u4e0d\u80fd\u5728\u5b50\u67e5\u8be2\u6216\uff08\u4f8b\u5982 SUM\u3001AVG\uff09\u4e2d\u4f7f\u7528\u3002<\/li>\n<li>ROWNUM \u4e0e\u6570\u636e\u5e93\u5f15\u64ce\u6709\u5173\uff0c\u4e0d\u540c\u6570\u636e\u5e93\u5f15\u64ce\u53ef\u80fd\u4f1a\u6709\u4e0d\u540c\u7684\u5b9e\u73b0\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fsql\u4e2drownum\u7684\u7528\u6cd5\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>sql \u4e2d rownum \u662f\u8fd4\u56de\u884c\u5e8f\u53f7\u7684\u4f2a\u5217\uff0c\u7528\u4e8e\u6392\u5e8f\u6216\u57fa\u4e8e\u884c\u9650\u5236\u6570\u636e\u3002\u8bed\u6cd5\u4e3a\uff1aselect column_list, rownum from table_name [where condition] [order by column_name]\uff0c\u5176\u4e2d column_list \u662f\u8981\u9009\u62e9\u7684\u5217\uff0ctable_name \u662f\u8981\u67e5\u8be2\u7684\u8868\uff0cwhere condition \u662f\u53ef\u9009\u7684\u7b5b\u9009\u6761\u4ef6\uff0corder by column_name \u662f\u53ef\u9009\u7684\u6392\u5e8f\u6761\u4ef6\u3002 SQL \u4e2d ROWNUM \u7528\u6cd5 ROWNUM \u662f SQL \u4e2d\u4e00\u4e2a\u4f2a\u5217\uff0c\u7528\u4e8e\u8fd4\u56de\u5f53\u524d\u884c\u5728\u7ed3\u679c\u96c6\u4e2d\u7684\u884c\u7684\u5e8f\u53f7\u3002\u5b83\u5e38\u7528\u4e8e\u5bf9\u6570\u636e\u8fdb\u884c\u6392\u5e8f\u6216\u8fdb\u884c\u57fa\u4e8e\u884c\u7684\u9650\u5236\u3002 \u7528\u6cd5 \u8bed\u6cd5\uff1aSELECT column_list, ROWNUMFROM table_name[WHERE condition][ORDER BY column_name] \u53c2\u6570 column_list\uff1a\u8981\u9009\u62e9\u7684\u5217 table_name\uff1a\u8981\u67e5\u8be2\u7684\u8868 WHERE condition\uff1a\u53ef\u9009\uff0c\u7528\u4e8e\u8fc7\u6ee4\u7ed3\u679c ORDER BY column_name\uff1a\u53ef\u9009\uff0c\u7528\u4e8e\u5bf9\u7ed3\u679c\u8fdb\u884c\u6392\u5e8f \u793a\u4f8b \u4ee5\u4e0b\u793a\u4f8b\u83b7\u53d6\u5458\u5de5\u8868\u4e2d\u6240\u6709\u5458\u5de5\u7684\u59d3\u540d\u548c\u884c\u5e8f\u53f7\uff1a SELECT name, ROWNUM FROM employees; \u767b\u5f55\u540e\u590d\u5236 \u4ee5\u4e0b\u793a\u4f8b\u83b7\u53d6\u5458\u5de5\u8868\u4e2d\u5de5\u8d44\u6700\u9ad8\u7684 5 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-5186","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5186","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=5186"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5186\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5186"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5186"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5186"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}