{"id":80415,"date":"2024-10-16T14:18:16","date_gmt":"2024-10-16T06:18:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/80415\/"},"modified":"2024-10-16T14:18:16","modified_gmt":"2024-10-16T06:18:16","slug":"mysql%e4%b8%ad%e5%8f%96%e5%be%97%e6%9c%80%e5%be%8c%e4%b8%80%e6%a2%9d%e8%a8%98%e9%8c%84","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/80415\/","title":{"rendered":"MySQL\u4e2d\u53d6\u5f97\u6700\u5f8c\u4e00\u689d\u8a18\u9304"},"content":{"rendered":"<h1 id=\"mysql%e4%b8%ad%e5%8f%96%e5%be%97%e6%9c%80%e5%be%8c%e4%b8%80%e6%a2%9d%e8%a8%98%e9%8c%84-pXUcWmdayX\">MySQL\u4e2d\u53d6\u5f97\u6700\u5f8c\u4e00\u689d\u8a18\u9304<\/h1>\n<p>\u5728\u4f7f\u7528MySQL\u6578\u64da\u5eab\u6642\uff0c\u7d93\u5e38\u9700\u8981\u5f9e\u8868\u4e2d\u7372\u53d6\u6700\u5f8c\u4e00\u689d\u8a18\u9304\u3002\u9019\u5728\u8a31\u591a\u61c9\u7528\u5834\u666f\u4e2d\u90fd\u975e\u5e38\u91cd\u8981\uff0c\u4f8b\u5982\u986f\u793a\u6700\u65b0\u7684\u7528\u6236\u6d3b\u52d5\u3001\u6700\u65b0\u7684\u8a02\u55ae\u6216\u6700\u65b0\u7684\u6d88\u606f\u7b49\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728MySQL\u4e2d\u6709\u6548\u5730\u53d6\u5f97\u6700\u5f8c\u4e00\u689d\u8a18\u9304\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u7bc4\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-pXUcWmdayX\">\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728MySQL\u4e2d\uff0c\u8868\u7684\u8a18\u9304\u662f\u7121\u5e8f\u7684\uff0c\u9664\u975e\u660e\u78ba\u6307\u5b9a\u6392\u5e8f\u65b9\u5f0f\u3002\u56e0\u6b64\uff0c\u70ba\u4e86\u7372\u53d6\u6700\u5f8c\u4e00\u689d\u8a18\u9304\uff0c\u901a\u5e38\u9700\u8981\u4f7f\u7528ORDER BY\u5b50\u53e5\u4f86\u6307\u5b9a\u6392\u5e8f\u7684\u4f9d\u64da\uff0c\u7136\u5f8c\u4f7f\u7528LIMIT\u5b50\u53e5\u4f86\u9650\u5236\u8fd4\u56de\u7684\u8a18\u9304\u6578\u91cf\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8order-by%e5%92%8climit-pXUcWmdayX\">\u4f7f\u7528ORDER BY\u548cLIMIT<\/h2>\n<p>\u6700\u5e38\u898b\u7684\u65b9\u6cd5\u662f\u4f7f\u7528ORDER BY\u5b50\u53e5\u4f86\u6839\u64da\u67d0\u500b\u5b57\u6bb5\uff08\u901a\u5e38\u662f\u81ea\u589e\u7684ID\u6216\u6642\u9593\u6233\uff09\u9032\u884c\u6392\u5e8f\uff0c\u7136\u5f8c\u4f7f\u7528LIMIT 1\u4f86\u7372\u53d6\u6700\u5f8c\u4e00\u689d\u8a18\u9304\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT * FROM your_table_name\nORDER BY id DESC\nLIMIT 1;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c<code>your_table_name<\/code>\u662f\u4f60\u8981\u67e5\u8a62\u7684\u8868\u540d\uff0c<code>id<\/code>\u662f\u7528\u4f86\u6392\u5e8f\u7684\u5b57\u6bb5\u3002\u9019\u6a23\u7684\u67e5\u8a62\u5c07\u8fd4\u56deID\u6700\u5927\u7684\u90a3\u4e00\u689d\u8a18\u9304\uff0c\u5373\u6700\u5f8c\u63d2\u5165\u7684\u8a18\u9304\u3002<\/p>\n<h2 id=\"%e6%a0%b9%e6%93%9a%e6%99%82%e9%96%93%e6%88%b3%e7%8d%b2%e5%8f%96%e6%9c%80%e5%be%8c%e4%b8%80%e6%a2%9d%e8%a8%98%e9%8c%84-pXUcWmdayX\">\u6839\u64da\u6642\u9593\u6233\u7372\u53d6\u6700\u5f8c\u4e00\u689d\u8a18\u9304<\/h2>\n<p>\u5982\u679c\u4f60\u7684\u8868\u4e2d\u6709\u4e00\u500b\u6642\u9593\u6233\u5b57\u6bb5\uff0c\u4f8b\u5982<code>created_at<\/code>\uff0c\u4f60\u4e5f\u53ef\u4ee5\u6839\u64da\u9019\u500b\u5b57\u6bb5\u4f86\u7372\u53d6\u6700\u5f8c\u4e00\u689d\u8a18\u9304\uff1a<\/p>\n<pre><code>SELECT * FROM your_table_name\nORDER BY created_at DESC\nLIMIT 1;<\/code><\/pre>\n<p>\u9019\u6a23\u7684\u67e5\u8a62\u5c07\u8fd4\u56de\u6700\u65b0\u5275\u5efa\u7684\u8a18\u9304\uff0c\u9069\u5408\u7528\u65bc\u9700\u8981\u6839\u64da\u6642\u9593\u7372\u53d6\u6700\u65b0\u6578\u64da\u7684\u5834\u666f\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e5%ad%90%e6%9f%a5%e8%a9%a2-pXUcWmdayX\">\u4f7f\u7528\u5b50\u67e5\u8a62<\/h2>\n<p>\u9664\u4e86\u4f7f\u7528ORDER BY\u548cLIMIT\u5916\uff0c\u9084\u53ef\u4ee5\u4f7f\u7528\u5b50\u67e5\u8a62\u4f86\u7372\u53d6\u6700\u5f8c\u4e00\u689d\u8a18\u9304\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT * FROM your_table_name\nWHERE id = (SELECT MAX(id) FROM your_table_name);<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u9996\u5148\u901a\u904e\u5b50\u67e5\u8a62\u7372\u53d6ID\u7684\u6700\u5927\u503c\uff0c\u7136\u5f8c\u518d\u6839\u64da\u9019\u500b\u503c\u67e5\u8a62\u5c0d\u61c9\u7684\u8a18\u9304\u3002\u9019\u7a2e\u65b9\u6cd5\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u53ef\u80fd\u6703\u66f4\u6e05\u6670\uff0c\u4f46\u6027\u80fd\u4e0a\u53ef\u80fd\u4e0d\u5982\u76f4\u63a5\u4f7f\u7528ORDER BY\u548cLIMIT\u3002<\/p>\n<h2 id=\"%e8%80%83%e6%85%ae%e6%80%a7%e8%83%bd-pXUcWmdayX\">\u8003\u616e\u6027\u80fd<\/h2>\n<p>\u5728\u8655\u7406\u5927\u578b\u6578\u64da\u96c6\u6642\uff0c\u6027\u80fd\u662f\u4e00\u500b\u91cd\u8981\u7684\u8003\u91cf\u56e0\u7d20\u3002\u4f7f\u7528<code>ORDER BY<\/code>\u548c<code>LIMIT<\/code>\u7684\u67e5\u8a62\u901a\u5e38\u662f\u9ad8\u6548\u7684\uff0c\u4f46\u5982\u679c\u8868\u4e2d\u6c92\u6709\u9069\u7576\u7684\u7d22\u5f15\uff0c\u67e5\u8a62\u6027\u80fd\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\u3002\u56e0\u6b64\uff0c\u5efa\u8b70\u5728\u7d93\u5e38\u67e5\u8a62\u7684\u5b57\u6bb5\u4e0a\u5efa\u7acb\u7d22\u5f15\uff0c\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-pXUcWmdayX\">\u7e3d\u7d50<\/h2>\n<p>\u5728MySQL\u4e2d\u7372\u53d6\u6700\u5f8c\u4e00\u689d\u8a18\u9304\u7684\u65b9\u6cd5\u6709\u591a\u7a2e\uff0c\u6700\u5e38\u898b\u7684\u65b9\u5f0f\u662f\u4f7f\u7528<code>ORDER BY<\/code>\u548c<code>LIMIT<\/code>\u3002\u6839\u64da\u5177\u9ad4\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u6709\u6548\u63d0\u9ad8\u6578\u64da\u67e5\u8a62\u7684\u6548\u7387\u3002\u7121\u8ad6\u662f\u6839\u64daID\u9084\u662f\u6642\u9593\u6233\u9032\u884c\u6392\u5e8f\uff0c\u7406\u89e3\u9019\u4e9b\u57fa\u672c\u64cd\u4f5c\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u548c\u61c9\u7528\u958b\u767c\u90fd\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u679c\u4f60\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\u4f60\u7684MySQL\u6578\u64da\u5eab\uff0c\u9019\u5c07\u70ba\u4f60\u7684\u61c9\u7528\u63d0\u4f9b\u7a69\u5b9a\u548c\u5feb\u901f\u7684\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728MySQL\u4e2d\u53d6\u5f97\u6700\u5f8c\u4e00\u689d\u8a18\u9304\uff0c\u4f7f\u7528ORDER BY\u548cLIMIT\u8a9e\u53e5\u8f15\u9b06\u7372\u53d6\u6700\u65b0\u6578\u64da\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-80415","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/80415","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=80415"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/80415\/revisions"}],"predecessor-version":[{"id":80416,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/80415\/revisions\/80416"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=80415"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=80415"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=80415"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}