{"id":143873,"date":"2024-11-01T01:58:18","date_gmt":"2024-10-31T17:58:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/143873\/"},"modified":"2024-11-01T01:58:19","modified_gmt":"2024-10-31T17:58:19","slug":"sql-%e6%89%b9%e9%87%8f%e6%9b%b4%e6%96%b0%e5%a4%9a%e5%bc%b5%e8%a1%a8%ef%bc%8c%e4%b8%80%e6%ac%a1%e6%93%8d%e4%bd%9c%e6%95%b8%e6%93%9a%e5%ba%ab%e9%ab%98%e6%95%88%e5%ae%8c%e6%88%90-sql-%e5%a4%9a%e5%bc%b5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/143873\/","title":{"rendered":"SQL \u6279\u91cf\u66f4\u65b0\u591a\u5f35\u8868\uff0c\u4e00\u6b21\u64cd\u4f5c\u6578\u64da\u5eab\u9ad8\u6548\u5b8c\u6210 (sql \u591a\u5f35\u8868\u540c\u6642\u66f4\u65b0\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"sql-%e6%89%b9%e9%87%8f%e6%9b%b4%e6%96%b0%e5%a4%9a%e5%bc%b5%e8%a1%a8%ef%bc%8c%e4%b8%80%e6%ac%a1%e6%93%8d%e4%bd%9c%e6%95%b8%e6%93%9a%e5%ba%ab%e9%ab%98%e6%95%88%e5%ae%8c%e6%88%90-xddxhpvmQU\">SQL \u6279\u91cf\u66f4\u65b0\u591a\u5f35\u8868\uff0c\u4e00\u6b21\u64cd\u4f5c\u6578\u64da\u5eab\u9ad8\u6548\u5b8c\u6210<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u6279\u91cf\u66f4\u65b0\u591a\u5f35\u8868\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\u3002\u9019\u7a2e\u64cd\u4f5c\u4e0d\u50c5\u53ef\u4ee5\u63d0\u9ad8\u6548\u7387\uff0c\u9084\u80fd\u6e1b\u5c11\u6578\u64da\u5eab\u7684\u9396\u5b9a\u6642\u9593\uff0c\u5f9e\u800c\u63d0\u5347\u6574\u9ad4\u6027\u80fd\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728 SQL \u4e2d\u9ad8\u6548\u5730\u6279\u91cf\u66f4\u65b0\u591a\u5f35\u8868\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e6%89%b9%e9%87%8f%e6%9b%b4%e6%96%b0%e5%a4%9a%e5%bc%b5%e8%a1%a8%ef%bc%9f-xddxhpvmQU\">\u70ba\u4ec0\u9ebc\u9700\u8981\u6279\u91cf\u66f4\u65b0\u591a\u5f35\u8868\uff1f<\/h2>\n<p>\u5728\u8a31\u591a\u61c9\u7528\u5834\u666f\u4e2d\uff0c\u6578\u64da\u4e4b\u9593\u5b58\u5728\u8457\u5bc6\u5207\u7684\u95dc\u806f\u3002\u4f8b\u5982\uff0c\u7576\u7528\u6236\u7684\u8cc7\u6599\u66f4\u65b0\u6642\uff0c\u53ef\u80fd\u9700\u8981\u540c\u6642\u66f4\u65b0\u7528\u6236\u7684\u8a02\u55ae\u3001\u5730\u5740\u7b49\u76f8\u95dc\u4fe1\u606f\u3002\u9019\u6a23\u7684\u64cd\u4f5c\u5982\u679c\u9010\u4e00\u57f7\u884c\uff0c\u5c07\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u548c\u6578\u64da\u4e0d\u4e00\u81f4\u7684\u98a8\u96aa\u3002\u56e0\u6b64\uff0c\u6279\u91cf\u66f4\u65b0\u591a\u5f35\u8868\u53ef\u4ee5\u6709\u6548\u89e3\u6c7a\u9019\u4e9b\u554f\u984c\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-sql-%e9%80%b2%e8%a1%8c%e6%89%b9%e9%87%8f%e6%9b%b4%e6%96%b0%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%96%b9%e6%b3%95-xddxhpvmQU\">\u4f7f\u7528 SQL \u9032\u884c\u6279\u91cf\u66f4\u65b0\u7684\u57fa\u672c\u65b9\u6cd5<\/h2>\n<p>\u5728 SQL \u4e2d\uff0c\u6279\u91cf\u66f4\u65b0\u591a\u5f35\u8868\u901a\u5e38\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u5e7e\u7a2e\u65b9\u5f0f\u5be6\u73fe\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u4e8b\u52d9 (Transaction)<\/strong>\uff1a\u5c07\u591a\u500b\u66f4\u65b0\u64cd\u4f5c\u5305\u88f9\u5728\u4e00\u500b\u4e8b\u52d9\u4e2d\uff0c\u78ba\u4fdd\u8981\u9ebc\u5168\u90e8\u6210\u529f\uff0c\u8981\u9ebc\u5168\u90e8\u5931\u6557\u3002<\/li>\n<li><strong>\u4f7f\u7528 JOIN \u8a9e\u53e5<\/strong>\uff1a\u5728\u66f4\u65b0\u6642\u4f7f\u7528 JOIN \u8a9e\u53e5\u4f86\u540c\u6642\u66f4\u65b0\u591a\u5f35\u8868\u3002<\/li>\n<li><strong>\u4f7f\u7528\u5b50\u67e5\u8a62<\/strong>\uff1a\u901a\u904e\u5b50\u67e5\u8a62\u4f86\u7372\u53d6\u9700\u8981\u66f4\u65b0\u7684\u6578\u64da\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e4%bd%bf%e7%94%a8%e4%ba%8b%e5%8b%99%e9%80%b2%e8%a1%8c%e6%89%b9%e9%87%8f%e6%9b%b4%e6%96%b0-xddxhpvmQU\">\u793a\u4f8b\uff1a\u4f7f\u7528\u4e8b\u52d9\u9032\u884c\u6279\u91cf\u66f4\u65b0<\/h3>\n<pre><code>BEGIN;\n\nUPDATE users SET status = 'active' WHERE last_login &gt; NOW() - INTERVAL 30 DAY;\nUPDATE orders SET status = 'completed' WHERE user_id IN (SELECT id FROM users WHERE status = 'active');\n\nCOMMIT;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u9996\u5148\u5c07\u6240\u6709\u6700\u8fd1\u767b\u9304\u7684\u7528\u6236\u72c0\u614b\u66f4\u65b0\u70ba\u201cactive\u201d\uff0c\u7136\u5f8c\u6839\u64da\u9019\u4e9b\u7528\u6236\u7684 ID \u66f4\u65b0\u4ed6\u5011\u7684\u8a02\u55ae\u72c0\u614b\u70ba\u201ccompleted\u201d\u3002\u9019\u6a23\u7684\u64cd\u4f5c\u78ba\u4fdd\u4e86\u6578\u64da\u7684\u4e00\u81f4\u6027\uff0c\u4e26\u4e14\u5728\u4e8b\u52d9\u4e2d\u57f7\u884c\u53ef\u4ee5\u907f\u514d\u90e8\u5206\u66f4\u65b0\u7684\u60c5\u6cc1\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e4%bd%bf%e7%94%a8-join-%e8%aa%9e%e5%8f%a5%e9%80%b2%e8%a1%8c%e6%9b%b4%e6%96%b0-xddxhpvmQU\">\u793a\u4f8b\uff1a\u4f7f\u7528 JOIN \u8a9e\u53e5\u9032\u884c\u66f4\u65b0<\/h3>\n<pre><code>UPDATE users u\nJOIN orders o ON u.id = o.user_id\nSET u.status = 'active', o.status = 'completed'\nWHERE u.last_login &gt; NOW() - INTERVAL 30 DAY;<\/code><\/pre>\n<p>\u9019\u500b\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528 JOIN \u8a9e\u53e5\u4f86\u540c\u6642\u66f4\u65b0\u591a\u5f35\u8868\u3002\u5728\u9019\u88e1\uff0c\u6211\u5011\u76f4\u63a5\u5728\u4e00\u500b SQL \u8a9e\u53e5\u4e2d\u66f4\u65b0\u4e86\u7528\u6236\u548c\u8a02\u55ae\u7684\u72c0\u614b\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u57f7\u884c\u7684\u6642\u9593\u548c\u8cc7\u6e90\u6d88\u8017\u3002<\/p>\n<h2 id=\"%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-xddxhpvmQU\">\u6700\u4f73\u5be6\u8e10<\/h2>\n<ul>\n<li><strong>\u4f7f\u7528\u4e8b\u52d9<\/strong>\uff1a\u5728\u9032\u884c\u6279\u91cf\u66f4\u65b0\u6642\uff0c\u59cb\u7d42\u4f7f\u7528\u4e8b\u52d9\u4f86\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002<\/li>\n<li><strong>\u907f\u514d\u9577\u6642\u9593\u9396\u5b9a<\/strong>\uff1a\u76e1\u91cf\u6e1b\u5c11\u6bcf\u500b\u4e8b\u52d9\u7684\u57f7\u884c\u6642\u9593\uff0c\u4ee5\u907f\u514d\u9577\u6642\u9593\u9396\u5b9a\u6578\u64da\u3002<\/li>\n<li><strong>\u6e2c\u8a66\u6027\u80fd<\/strong>\uff1a\u5728\u751f\u7522\u74b0\u5883\u4e2d\u57f7\u884c\u6279\u91cf\u66f4\u65b0\u4e4b\u524d\uff0c\u61c9\u5728\u6e2c\u8a66\u74b0\u5883\u4e2d\u9032\u884c\u6027\u80fd\u6e2c\u8a66\u3002<\/li>\n<li><strong>\u5b9a\u671f\u5099\u4efd<\/strong>\uff1a\u5728\u9032\u884c\u5927\u898f\u6a21\u66f4\u65b0\u4e4b\u524d\uff0c\u52d9\u5fc5\u5099\u4efd\u6578\u64da\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u60c5\u6cc1\u767c\u751f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-xddxhpvmQU\">\u7e3d\u7d50<\/h2>\n<p>\u6279\u91cf\u66f4\u65b0\u591a\u5f35\u8868\u662f\u4e00\u9805\u91cd\u8981\u7684\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u80fd\u5920\u63d0\u9ad8\u6548\u7387\u4e26\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002\u901a\u904e\u4f7f\u7528\u4e8b\u52d9\u3001JOIN \u8a9e\u53e5\u548c\u5b50\u67e5\u8a62\u7b49\u6280\u8853\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u5be6\u73fe\u9019\u4e00\u76ee\u6a19\u3002\u5728\u9032\u884c\u9019\u4e9b\u64cd\u4f5c\u6642\uff0c\u9075\u5faa\u6700\u4f73\u5be6\u8e10\u5c07\u6709\u52a9\u65bc\u6e1b\u5c11\u6f5b\u5728\u7684\u554f\u984c\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u64cd\u4f5c\uff0cServer.HK \u63d0\u4f9b\u4e86\u7a69\u5b9a\u548c\u53ef\u9760\u7684\u670d\u52d9\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u6578\u64da\u5eab\u548c\u61c9\u7528\u7a0b\u5e8f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9ad8\u6548\u6279\u91cf\u66f4\u65b0\u591a\u5f35\u8868\u7684SQL\u6280\u5de7\uff0c\u5be6\u73fe\u4e00\u6b21\u64cd\u4f5c\u540c\u6642\u66f4\u65b0\u6578\u64da\u5eab\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\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-143873","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/143873","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=143873"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/143873\/revisions"}],"predecessor-version":[{"id":143874,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/143873\/revisions\/143874"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=143873"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=143873"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=143873"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}