{"id":77426,"date":"2024-10-16T10:48:17","date_gmt":"2024-10-16T02:48:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/77426\/"},"modified":"2024-10-16T10:48:18","modified_gmt":"2024-10-16T02:48:18","slug":"mysql%e8%88%87%e5%88%86%e9%a0%81","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/77426\/","title":{"rendered":"MySQL\u8207\u5206\u9801"},"content":{"rendered":"<h1 id=\"mysql%e8%88%87%e5%88%86%e9%a0%81-AOflIkCBIe\">MySQL\u8207\u5206\u9801<\/h1>\n<p>\u5728\u73fe\u4eca\u7684\u7db2\u7d61\u61c9\u7528\u4e2d\uff0c\u6578\u64da\u7684\u7ba1\u7406\u8207\u5c55\u793a\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u7576\u6578\u64da\u91cf\u9f90\u5927\u6642\uff0c\u5982\u4f55\u6709\u6548\u5730\u5c55\u793a\u9019\u4e9b\u6578\u64da\u6210\u70ba\u4e86\u4e00\u500b\u6311\u6230\u3002\u9019\u6642\uff0c\u5206\u9801\u6280\u8853\u4fbf\u61c9\u904b\u800c\u751f\u3002\u672c\u6587\u5c07\u63a2\u8a0eMySQL\u4e2d\u7684\u5206\u9801\u6280\u8853\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7ba1\u7406\u548c\u5c55\u793a\u6578\u64da\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%88%86%e9%a0%81%ef%bc%9f-AOflIkCBIe\">\u4ec0\u9ebc\u662f\u5206\u9801\uff1f<\/h2>\n<p>\u5206\u9801\u662f\u5c07\u5927\u91cf\u6578\u64da\u5206\u6210\u591a\u500b\u5c0f\u90e8\u5206\uff08\u5373\u9801\u9762\uff09\u9032\u884c\u5c55\u793a\u7684\u6280\u8853\u3002\u9019\u6a23\u4e0d\u50c5\u80fd\u63d0\u9ad8\u7528\u6236\u9ad4\u9a57\uff0c\u9084\u80fd\u6e1b\u5c11\u4e00\u6b21\u6027\u52a0\u8f09\u7684\u6578\u64da\u91cf\uff0c\u5f9e\u800c\u63d0\u9ad8\u61c9\u7528\u7684\u6027\u80fd\u3002\u5206\u9801\u901a\u5e38\u7528\u65bc\u986f\u793a\u5217\u8868\u3001\u641c\u7d22\u7d50\u679c\u6216\u4efb\u4f55\u9700\u8981\u5c55\u793a\u5927\u91cf\u6578\u64da\u7684\u5834\u666f\u3002<\/p>\n<h2 id=\"mysql%e4%b8%ad%e7%9a%84%e5%88%86%e9%a0%81%e5%af%a6%e7%8f%be-AOflIkCBIe\">MySQL\u4e2d\u7684\u5206\u9801\u5be6\u73fe<\/h2>\n<p>\u5728MySQL\u4e2d\uff0c\u5206\u9801\u901a\u5e38\u4f7f\u7528LIMIT\u548cOFFSET\u5b50\u53e5\u4f86\u5be6\u73fe\u3002\u9019\u5169\u500b\u5b50\u53e5\u53ef\u4ee5\u5e6b\u52a9\u6211\u5011\u63a7\u5236\u67e5\u8a62\u7d50\u679c\u7684\u6578\u91cf\u548c\u8d77\u59cb\u4f4d\u7f6e\u3002<\/p>\n<h3 id=\"limit%e5%92%8coffset%e7%9a%84%e7%94%a8%e6%b3%95-AOflIkCBIe\">LIMIT\u548cOFFSET\u7684\u7528\u6cd5<\/h3>\n<ul>\n<li><code>LIMIT n<\/code>\uff1a\u9650\u5236\u67e5\u8a62\u7d50\u679c\u7684\u6578\u91cf\u70ban\u689d\u3002<\/li>\n<li><code>OFFSET m<\/code>\uff1a\u6307\u5b9a\u67e5\u8a62\u7d50\u679c\u7684\u8d77\u59cb\u4f4d\u7f6e\uff0c\u5f9e\u7b2cm\u689d\u6578\u64da\u958b\u59cb\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<code>products<\/code>\u7684\u8868\uff0c\u4e26\u5e0c\u671b\u6bcf\u9801\u986f\u793a10\u689d\u6578\u64da\uff0c\u5247\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u67e5\u8a62\u4f86\u7372\u53d6\u7b2c1\u9801\u7684\u6578\u64da\uff1a<\/p>\n<pre><code>SELECT * FROM products LIMIT 10 OFFSET 0;<\/code><\/pre>\n<p>\u800c\u8981\u7372\u53d6\u7b2c2\u9801\u7684\u6578\u64da\uff0c\u5247\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n<pre><code>SELECT * FROM products LIMIT 10 OFFSET 10;<\/code><\/pre>\n<h2 id=\"%e8%a8%88%e7%ae%97%e7%b8%bd%e9%a0%81%e6%95%b8-AOflIkCBIe\">\u8a08\u7b97\u7e3d\u9801\u6578<\/h2>\n<p>\u5728\u5be6\u73fe\u5206\u9801\u6642\uff0c\u4e86\u89e3\u7e3d\u6578\u64da\u91cf\u548c\u7e3d\u9801\u6578\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u67e5\u8a62\u4f86\u8a08\u7b97\u7e3d\u6578\u64da\u91cf\uff1a<\/p>\n<pre><code>SELECT COUNT(*) FROM products;<\/code><\/pre>\n<p>\u5047\u8a2d\u7e3d\u6578\u64da\u91cf\u70ba<code>total_count<\/code>\uff0c\u5247\u7e3d\u9801\u6578\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u516c\u5f0f\u8a08\u7b97\uff1a<\/p>\n<pre><code>total_pages = CEIL(total_count \/ items_per_page);<\/code><\/pre>\n<p>\u9019\u88e1\uff0c<code>items_per_page<\/code>\u662f\u6bcf\u9801\u986f\u793a\u7684\u6578\u64da\u689d\u6578\u3002<\/p>\n<h2 id=\"%e5%88%86%e9%a0%81%e7%9a%84%e5%84%aa%e5%8c%96-AOflIkCBIe\">\u5206\u9801\u7684\u512a\u5316<\/h2>\n<p>\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u5206\u9801\u67e5\u8a62\u53ef\u80fd\u6703\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\u800c\u8b8a\u5f97\u7de9\u6162\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u512a\u5316\u5206\u9801\u67e5\u8a62\u7684\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u7d22\u5f15\uff1a<\/strong>\u78ba\u4fdd\u67e5\u8a62\u7684\u5b57\u6bb5\u4e0a\u6709\u9069\u7576\u7684\u7d22\u5f15\uff0c\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<li><strong>\u907f\u514d\u4f7f\u7528OFFSET\uff1a<\/strong>\u7576\u6578\u64da\u91cf\u975e\u5e38\u5927\u6642\uff0c\u4f7f\u7528OFFSET\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u57fa\u65bc\u6e38\u6a19\u7684\u5206\u9801\u65b9\u6cd5\u3002<\/li>\n<li><strong>\u7de9\u5b58\u7d50\u679c\uff1a<\/strong>\u5c0d\u65bc\u4e0d\u7d93\u5e38\u8b8a\u52d5\u7684\u6578\u64da\uff0c\u53ef\u4ee5\u8003\u616e\u5c07\u67e5\u8a62\u7d50\u679c\u7de9\u5b58\uff0c\u4ee5\u6e1b\u5c11\u5c0d\u6578\u64da\u5eab\u7684\u8acb\u6c42\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-AOflIkCBIe\">\u7d50\u8ad6<\/h2>\n<p>MySQL\u7684\u5206\u9801\u6280\u8853\u662f\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u4e0d\u53ef\u6216\u7f3a\u7684\u5de5\u5177\u3002\u901a\u904e\u5408\u7406\u4f7f\u7528LIMIT\u548cOFFSET\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u548c\u5c55\u793a\u6578\u64da\uff0c\u63d0\u5347\u7528\u6236\u9ad4\u9a57\u3002\u540c\u6642\uff0c\u5c0d\u65bc\u6027\u80fd\u7684\u512a\u5316\u4e5f\u662f\u5fc5\u9808\u8003\u616e\u7684\u56e0\u7d20\u3002\u4e86\u89e3\u9019\u4e9b\u57fa\u672c\u6982\u5ff5\u5f8c\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5728\u5be6\u969b\u61c9\u7528\u4e2d\u9748\u6d3b\u904b\u7528\uff0c\u5f9e\u800c\u63d0\u9ad8\u61c9\u7528\u7684\u6574\u9ad4\u6027\u80fd\u3002<\/p>\n<p>\u5982\u9700\u9032\u4e00\u6b65\u4e86\u89e3\u6709\u95dc<code>VPS<\/code>\u3001<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u53ca\u5176\u4ed6\u76f8\u95dc\u6280\u8853\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MySQL\u4e2d\u7684\u5206\u9801\u6280\u8853\uff0c\u63d0\u5347\u6578\u64da\u67e5\u8a62\u6548\u7387\uff0c\u512a\u5316\u7528\u6236\u9ad4\u9a57\uff0c\u8b93\u60a8\u7684\u61c9\u7528\u7a0b\u5f0f\u66f4\u6d41\u66a2\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-77426","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/77426","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=77426"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/77426\/revisions"}],"predecessor-version":[{"id":77427,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/77426\/revisions\/77427"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=77426"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=77426"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=77426"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}