{"id":182994,"date":"2024-11-10T01:03:17","date_gmt":"2024-11-09T17:03:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/182994\/"},"modified":"2024-11-10T01:03:18","modified_gmt":"2024-11-09T17:03:18","slug":"%e5%af%a6%e7%8f%bemysql%e5%88%86%e9%a0%81%e7%94%a8limit%e5%87%bd%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/182994\/","title":{"rendered":"\u5be6\u73feMySQL\u5206\u9801\u7528LIMIT\u51fd\u6578"},"content":{"rendered":"<h1 id=\"%e5%af%a6%e7%8f%bemysql%e5%88%86%e9%a0%81%e7%94%a8limit%e5%87%bd%e6%95%b8-HIBfTGLmLV\">\u5be6\u73feMySQL\u5206\u9801\u7528LIMIT\u51fd\u6578<\/h1>\n<p>\u5728\u73fe\u4ee3\u7684\u7db2\u9801\u61c9\u7528\u4e2d\uff0c\u6578\u64da\u7684\u5c55\u793a\u5f80\u5f80\u9700\u8981\u5206\u9801\u8655\u7406\uff0c\u4ee5\u63d0\u9ad8\u7528\u6236\u9ad4\u9a57\u548c\u7cfb\u7d71\u6027\u80fd\u3002MySQL\u4f5c\u70ba\u4e00\u500b\u6d41\u884c\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86LIMIT\u51fd\u6578\u4f86\u5be6\u73fe\u6578\u64da\u7684\u5206\u9801\u529f\u80fd\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528LIMIT\u51fd\u6578\u4f86\u5be6\u73feMySQL\u7684\u5206\u9801\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"limit%e5%87%bd%e6%95%b8%e7%9a%84%e5%9f%ba%e6%9c%ac%e7%94%a8%e6%b3%95-HIBfTGLmLV\">LIMIT\u51fd\u6578\u7684\u57fa\u672c\u7528\u6cd5<\/h2>\n<p>LIMIT\u51fd\u6578\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT column1, column2, ...\nFROM table_name\nLIMIT offset, count;<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>offset<\/code>\u8868\u793a\u5f9e\u54ea\u4e00\u689d\u8a18\u9304\u958b\u59cb\uff0c<code>count<\/code>\u5247\u8868\u793a\u8981\u8fd4\u56de\u7684\u8a18\u9304\u6578\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u5e0c\u671b\u5f9e\u7b2c11\u689d\u8a18\u9304\u958b\u59cb\uff0c\u4e26\u8fd4\u56de10\u689d\u8a18\u9304\uff0c\u6211\u5011\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n<pre><code>SELECT * FROM users\nLIMIT 10, 10;<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u7528\u6236\u8868\u4e2d\u7b2c11\u5230\u7b2c20\u689d\u8a18\u9304\u3002<\/p>\n<h2 id=\"%e5%88%86%e9%a0%81%e7%9a%84%e5%af%a6%e7%8f%be-HIBfTGLmLV\">\u5206\u9801\u7684\u5be6\u73fe<\/h2>\n<p>\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u5206\u9801\u901a\u5e38\u9700\u8981\u6839\u64da\u7528\u6236\u7684\u8acb\u6c42\u4f86\u52d5\u614b\u751f\u6210\u3002\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u7528\u6236\u5217\u8868\uff0c\u4e26\u5e0c\u671b\u6bcf\u9801\u986f\u793a10\u689d\u8a18\u9304\uff0c\u6211\u5011\u53ef\u4ee5\u6839\u64da\u7576\u524d\u9801\u78bc\u4f86\u8a08\u7b97<code>offset<\/code>\u7684\u503c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>SET @page := 1; -- \u7576\u524d\u9801\u78bc\nSET @pageSize := 10; -- \u6bcf\u9801\u986f\u793a\u7684\u8a18\u9304\u6578\nSET @offset := (@page - 1) * @pageSize; -- \u8a08\u7b97offset\n\nSELECT * FROM users\nLIMIT @offset, @pageSize;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u4f7f\u7528\u8b8a\u91cf\u4f86\u52d5\u614b\u8a08\u7b97<code>offset<\/code>\uff0c\u5f9e\u800c\u5be6\u73fe\u5206\u9801\u529f\u80fd\u3002<\/p>\n<h2 id=\"%e7%b5%90%e5%90%88%e7%b8%bd%e8%a8%98%e9%8c%84%e6%95%b8-HIBfTGLmLV\">\u7d50\u5408\u7e3d\u8a18\u9304\u6578<\/h2>\n<p>\u5728\u5be6\u73fe\u5206\u9801\u6642\uff0c\u901a\u5e38\u9084\u9700\u8981\u77e5\u9053\u7e3d\u8a18\u9304\u6578\uff0c\u4ee5\u4fbf\u8a08\u7b97\u7e3d\u9801\u6578\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u7372\u53d6\u7e3d\u8a18\u9304\u6578\uff1a<\/p>\n<pre><code>SELECT COUNT(*) AS total FROM users;<\/code><\/pre>\n<p>\u7136\u5f8c\uff0c\u6211\u5011\u53ef\u4ee5\u6839\u64da\u7e3d\u8a18\u9304\u6578\u548c\u6bcf\u9801\u986f\u793a\u7684\u8a18\u9304\u6578\u4f86\u8a08\u7b97\u7e3d\u9801\u6578\uff1a<\/p>\n<pre><code>SET @total := (SELECT COUNT(*) FROM users);\nSET @totalPages := CEIL(@total \/ @pageSize); -- \u8a08\u7b97\u7e3d\u9801\u6578<\/code><\/pre>\n<h2 id=\"%e6%80%a7%e8%83%bd%e8%80%83%e9%87%8f-HIBfTGLmLV\">\u6027\u80fd\u8003\u91cf<\/h2>\n<p>\u5728\u4f7f\u7528LIMIT\u51fd\u6578\u9032\u884c\u5206\u9801\u6642\uff0c\u6027\u80fd\u662f\u4e00\u500b\u91cd\u8981\u7684\u8003\u91cf\u56e0\u7d20\u3002\u7576\u6578\u64da\u91cf\u975e\u5e38\u9f90\u5927\u6642\uff0c\u4f7f\u7528OFFSET\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\uff0c\u56e0\u70ba\u6578\u64da\u5eab\u9700\u8981\u8df3\u904e\u524d\u9762\u7684\u8a18\u9304\u3002\u70ba\u4e86\u63d0\u9ad8\u6027\u80fd\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u5176\u4ed6\u65b9\u6cd5\uff0c\u4f8b\u5982\u57fa\u65bc\u7d22\u5f15\u7684\u5206\u9801\uff0c\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u5168\u8868\u6383\u63cf\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-HIBfTGLmLV\">\u7d50\u8ad6<\/h2>\n<p>LIMIT\u51fd\u6578\u662fMySQL\u4e2d\u5be6\u73fe\u6578\u64da\u5206\u9801\u7684\u4e00\u500b\u5f37\u5927\u5de5\u5177\u3002\u901a\u904e\u5408\u7406\u4f7f\u7528LIMIT\u548cOFFSET\uff0c\u6211\u5011\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u548c\u5c55\u793a\u5927\u91cf\u6578\u64da\u3002\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u7d50\u5408\u7e3d\u8a18\u9304\u6578\u7684\u67e5\u8a62\u548c\u6027\u80fd\u512a\u5316\u7b56\u7565\uff0c\u53ef\u4ee5\u9032\u4e00\u6b65\u63d0\u5347\u7528\u6236\u9ad4\u9a57\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u6258\u7ba1\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u9019\u5c07\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u548c\u5feb\u901f\u7684\u6578\u64da\u8a2a\u554f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u4f7f\u7528MySQL\u7684LIMIT\u51fd\u6578\u5be6\u73fe\u5206\u9801\u529f\u80fd\uff0c\u8f15\u9b06\u7ba1\u7406\u5927\u91cf\u6578\u64da\uff0c\u63d0\u5347\u67e5\u8a62\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-182994","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/182994","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=182994"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/182994\/revisions"}],"predecessor-version":[{"id":182995,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/182994\/revisions\/182995"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=182994"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=182994"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=182994"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}