{"id":155411,"date":"2024-11-02T18:48:20","date_gmt":"2024-11-02T10:48:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/155411\/"},"modified":"2024-11-02T18:48:21","modified_gmt":"2024-11-02T10:48:21","slug":"%e8%bf%94%e5%9b%9e%e4%b8%80%e5%80%8b%e6%99%82%e9%96%93%e6%ae%b5%e4%b8%ad%e6%9f%90%e5%80%8b%e9%9a%a8%e6%a9%9f%e6%99%82%e9%96%93%e7%9a%84-sql-%e5%87%bd%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/155411\/","title":{"rendered":"\u8fd4\u56de\u4e00\u500b\u6642\u9593\u6bb5\u4e2d\u67d0\u500b\u96a8\u6a5f\u6642\u9593\u7684 SQL \u51fd\u6578"},"content":{"rendered":"<h1 id=\"%e8%bf%94%e5%9b%9e%e4%b8%80%e5%80%8b%e6%99%82%e9%96%93%e6%ae%b5%e4%b8%ad%e6%9f%90%e5%80%8b%e9%9a%a8%e6%a9%9f%e6%99%82%e9%96%93%e7%9a%84-sql-%e5%87%bd%e6%95%b8-tzOtUbJUoE\">\u8fd4\u56de\u4e00\u500b\u6642\u9593\u6bb5\u4e2d\u67d0\u500b\u96a8\u6a5f\u6642\u9593\u7684 SQL \u51fd\u6578<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u96a8\u6a5f\u6642\u9593\u7684\u751f\u6210\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\uff0c\u5c24\u5176\u662f\u5728\u9032\u884c\u6e2c\u8a66\u6216\u6a21\u64ec\u6642\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728 SQL \u4e2d\u5275\u5efa\u4e00\u500b\u51fd\u6578\uff0c\u4ee5\u8fd4\u56de\u4e00\u500b\u6307\u5b9a\u6642\u9593\u6bb5\u5167\u7684\u96a8\u6a5f\u6642\u9593\u3002\u9019\u5c0d\u65bc\u958b\u767c\u8005\u548c\u6578\u64da\u5206\u6790\u5e2b\u4f86\u8aaa\uff0c\u90fd\u662f\u4e00\u500b\u975e\u5e38\u5be6\u7528\u7684\u5de5\u5177\u3002<\/p>\n<h2 id=\"%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-tzOtUbJUoE\">\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728 SQL \u4e2d\uff0c\u6642\u9593\u548c\u65e5\u671f\u7684\u8655\u7406\u901a\u5e38\u4f9d\u8cf4\u65bc\u5167\u5efa\u7684\u65e5\u671f\u6642\u9593\u51fd\u6578\u3002\u8981\u751f\u6210\u4e00\u500b\u96a8\u6a5f\u6642\u9593\uff0c\u6211\u5011\u9700\u8981\u78ba\u5b9a\u4e00\u500b\u8d77\u59cb\u6642\u9593\u548c\u7d50\u675f\u6642\u9593\uff0c\u7136\u5f8c\u5728\u9019\u500b\u7bc4\u570d\u5167\u751f\u6210\u4e00\u500b\u96a8\u6a5f\u7684\u6642\u9593\u6233\u3002<\/p>\n<h2 id=\"sql-%e9%9a%a8%e6%a9%9f%e6%99%82%e9%96%93%e7%94%9f%e6%88%90%e7%9a%84%e6%ad%a5%e9%a9%9f-tzOtUbJUoE\">SQL \u96a8\u6a5f\u6642\u9593\u751f\u6210\u7684\u6b65\u9a5f<\/h2>\n<p>\u4ee5\u4e0b\u662f\u751f\u6210\u96a8\u6a5f\u6642\u9593\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li>\u5b9a\u7fa9\u8d77\u59cb\u6642\u9593\u548c\u7d50\u675f\u6642\u9593\u3002<\/li>\n<li>\u8a08\u7b97\u6642\u9593\u7bc4\u570d\u7684\u7e3d\u79d2\u6578\u3002<\/li>\n<li>\u751f\u6210\u4e00\u500b\u96a8\u6a5f\u7684\u79d2\u6578\uff0c\u4e26\u5c07\u5176\u52a0\u5230\u8d77\u59cb\u6642\u9593\u4e0a\u3002<\/li>\n<\/ol>\n<h2 id=\"%e7%af%84%e4%be%8b-sql-%e5%87%bd%e6%95%b8-tzOtUbJUoE\">\u7bc4\u4f8b SQL \u51fd\u6578<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u7bc4 SQL \u51fd\u6578\uff0c\u8a72\u51fd\u6578\u63a5\u53d7\u5169\u500b\u65e5\u671f\u4f5c\u70ba\u53c3\u6578\uff0c\u4e26\u8fd4\u56de\u9019\u5169\u500b\u65e5\u671f\u4e4b\u9593\u7684\u4e00\u500b\u96a8\u6a5f\u6642\u9593\uff1a<\/p>\n<pre><code>\nCREATE FUNCTION GetRandomDateTime(startDate DATETIME, endDate DATETIME)\nRETURNS DATETIME\nBEGIN\n    DECLARE randomDateTime DATETIME;\n    DECLARE totalSeconds INT;\n    DECLARE randomSeconds INT;\n\n    -- \u8a08\u7b97\u8d77\u59cb\u6642\u9593\u548c\u7d50\u675f\u6642\u9593\u4e4b\u9593\u7684\u7e3d\u79d2\u6578\n    SET totalSeconds = TIMESTAMPDIFF(SECOND, startDate, endDate);\n\n    -- \u751f\u6210\u4e00\u500b\u96a8\u6a5f\u7684\u79d2\u6578\n    SET randomSeconds = FLOOR(RAND() * totalSeconds);\n\n    -- \u5c07\u96a8\u6a5f\u79d2\u6578\u52a0\u5230\u8d77\u59cb\u6642\u9593\u4e0a\n    SET randomDateTime = DATE_ADD(startDate, INTERVAL randomSeconds SECOND);\n\n    RETURN randomDateTime;\nEND;\n<\/code><\/pre>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e7%af%84%e4%be%8b-tzOtUbJUoE\">\u4f7f\u7528\u7bc4\u4f8b<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u60f3\u8981\u5728 2023 \u5e74 1 \u6708 1 \u65e5\u5230 2023 \u5e74 12 \u6708 31 \u65e5\u4e4b\u9593\u751f\u6210\u4e00\u500b\u96a8\u6a5f\u7684\u65e5\u671f\u6642\u9593\uff0c\u6211\u5011\u53ef\u4ee5\u9019\u6a23\u8abf\u7528\u6211\u5011\u7684\u51fd\u6578\uff1a<\/p>\n<pre><code>\nSELECT GetRandomDateTime('2023-01-01 00:00:00', '2023-12-31 23:59:59') AS RandomDateTime;\n<\/code><\/pre>\n<p>\u9019\u6a23\u7684\u67e5\u8a62\u5c07\u8fd4\u56de\u4e00\u500b\u5728\u6307\u5b9a\u7bc4\u570d\u5167\u7684\u96a8\u6a5f\u65e5\u671f\u6642\u9593\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-tzOtUbJUoE\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528\u9019\u500b\u51fd\u6578\u6642\uff0c\u6709\u5e7e\u9ede\u9700\u8981\u6ce8\u610f\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u8d77\u59cb\u6642\u9593\u65e9\u65bc\u7d50\u675f\u6642\u9593\uff0c\u5426\u5247\u51fd\u6578\u5c07\u7121\u6cd5\u6b63\u5e38\u5de5\u4f5c\u3002<\/li>\n<li>\u96a8\u6a5f\u6578\u7684\u751f\u6210\u4f9d\u8cf4\u65bc SQL \u7684\u96a8\u6a5f\u6578\u751f\u6210\u5668\uff0c\u53ef\u80fd\u6703\u53d7\u5230\u6578\u64da\u5eab\u7684\u914d\u7f6e\u5f71\u97ff\u3002<\/li>\n<li>\u5728\u9ad8\u4f75\u767c\u74b0\u5883\u4e2d\uff0c\u53ef\u80fd\u9700\u8981\u8003\u616e\u96a8\u6a5f\u6578\u7684\u552f\u4e00\u6027\uff0c\u4ee5\u907f\u514d\u91cd\u8907\u7684\u6642\u9593\u6233\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-tzOtUbJUoE\">\u7d50\u8ad6<\/h2>\n<p>\u751f\u6210\u96a8\u6a5f\u6642\u9593\u5728\u6578\u64da\u5eab\u64cd\u4f5c\u4e2d\u662f\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u529f\u80fd\uff0c\u5c24\u5176\u662f\u5728\u6e2c\u8a66\u548c\u6a21\u64ec\u5834\u666f\u4e2d\u3002\u901a\u904e\u4e0a\u8ff0\u7684 SQL \u51fd\u6578\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u5728\u6307\u5b9a\u7684\u6642\u9593\u7bc4\u570d\u5167\u7372\u53d6\u96a8\u6a5f\u7684\u65e5\u671f\u6642\u9593\uff0c\u5f9e\u800c\u63d0\u9ad8\u5de5\u4f5c\u6548\u7387\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u6216\u5176\u4ed6\u76f8\u95dc\u670d\u52d9\u611f\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd4\u56de\u4e00\u500b\u96a8\u6a5f\u6642\u9593\u7684 SQL \u51fd\u6578\uff0c\u5f9e\u6307\u5b9a\u7684\u6642\u9593\u6bb5\u4e2d\u96a8\u6a5f\u9078\u64c7\u4e00\u500b\u6642\u9593\uff0c\u4fbf\u65bc\u6578\u64da\u5206\u6790\u548c\u6e2c\u8a66\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-155411","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/155411","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=155411"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/155411\/revisions"}],"predecessor-version":[{"id":155412,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/155411\/revisions\/155412"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=155411"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=155411"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=155411"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}