{"id":174805,"date":"2024-11-07T23:54:20","date_gmt":"2024-11-07T15:54:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/174805\/"},"modified":"2024-11-07T23:54:21","modified_gmt":"2024-11-07T15:54:21","slug":"%e5%a6%82%e4%bd%95%e5%88%a9%e7%94%a8%e8%a7%b8%e7%99%bc%e5%99%a8%e5%af%a6%e7%8f%be%e5%85%a9%e5%80%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e9%96%93%e7%9a%84%e5%90%8c%e6%ad%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/174805\/","title":{"rendered":"\u5982\u4f55\u5229\u7528\u89f8\u767c\u5668\u5be6\u73fe\u5169\u500b\u6578\u64da\u5eab\u9593\u7684\u540c\u6b65"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e5%88%a9%e7%94%a8%e8%a7%b8%e7%99%bc%e5%99%a8%e5%af%a6%e7%8f%be%e5%85%a9%e5%80%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e9%96%93%e7%9a%84%e5%90%8c%e6%ad%a5-jBAMmgwUht\">\u5982\u4f55\u5229\u7528\u89f8\u767c\u5668\u5be6\u73fe\u5169\u500b\u6578\u64da\u5eab\u9593\u7684\u540c\u6b65<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u7684\u5be6\u6642\u540c\u6b65\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002\u7121\u8ad6\u662f\u70ba\u4e86\u63d0\u9ad8\u6578\u64da\u7684\u53ef\u7528\u6027\uff0c\u9084\u662f\u70ba\u4e86\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\uff0c\u5169\u500b\u6578\u64da\u5eab\u4e4b\u9593\u7684\u540c\u6b65\u90fd\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\u3002\u89f8\u767c\u5668\uff08Triggers\uff09\u4f5c\u70ba\u4e00\u7a2e\u5f37\u5927\u7684\u6578\u64da\u5eab\u529f\u80fd\uff0c\u53ef\u4ee5\u5e6b\u52a9\u6211\u5011\u81ea\u52d5\u5316\u9019\u4e00\u904e\u7a0b\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528\u89f8\u767c\u5668\u5be6\u73fe\u5169\u500b\u6578\u64da\u5eab\u4e4b\u9593\u7684\u540c\u6b65\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e8%a7%b8%e7%99%bc%e5%99%a8%ef%bc%9f-jBAMmgwUht\">\u4ec0\u9ebc\u662f\u89f8\u767c\u5668\uff1f<\/h2>\n<p>\u89f8\u767c\u5668\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u5b58\u5132\u7a0b\u5e8f\uff0c\u5b83\u6703\u5728\u7279\u5b9a\u4e8b\u4ef6\u767c\u751f\u6642\u81ea\u52d5\u57f7\u884c\u3002\u9019\u4e9b\u4e8b\u4ef6\u901a\u5e38\u5305\u62ec\u63d2\u5165\uff08INSERT\uff09\u3001\u66f4\u65b0\uff08UPDATE\uff09\u6216\u522a\u9664\uff08DELETE\uff09\u64cd\u4f5c\u3002\u89f8\u767c\u5668\u53ef\u4ee5\u7528\u65bc\u6578\u64da\u9a57\u8b49\u3001\u5be9\u8a08\u3001\u4ee5\u53ca\u5728\u4e0d\u540c\u6578\u64da\u5eab\u4e4b\u9593\u9032\u884c\u6578\u64da\u540c\u6b65\u7b49\u591a\u7a2e\u7528\u9014\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e6%95%b8%e6%93%9a%e5%ba%ab%e5%90%8c%e6%ad%a5%ef%bc%9f-jBAMmgwUht\">\u70ba\u4ec0\u9ebc\u9700\u8981\u6578\u64da\u5eab\u540c\u6b65\uff1f<\/h2>\n<p>\u6578\u64da\u5eab\u540c\u6b65\u7684\u9700\u6c42\u4e3b\u8981\u4f86\u81ea\u65bc\u4ee5\u4e0b\u5e7e\u500b\u65b9\u9762\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u5197\u9918\uff1a<\/strong>\u5728\u591a\u500b\u6578\u64da\u5eab\u4e2d\u5b58\u5132\u76f8\u540c\u7684\u6578\u64da\u53ef\u4ee5\u63d0\u9ad8\u6578\u64da\u7684\u53ef\u7528\u6027\u3002<\/li>\n<li><strong>\u8ca0\u8f09\u5747\u8861\uff1a<\/strong>\u901a\u904e\u5c07\u8acb\u6c42\u5206\u6563\u5230\u591a\u500b\u6578\u64da\u5eab\uff0c\u53ef\u4ee5\u6e1b\u5c11\u55ae\u4e00\u6578\u64da\u5eab\u7684\u8ca0\u64d4\u3002<\/li>\n<li><strong>\u6578\u64da\u5099\u4efd\uff1a<\/strong>\u5be6\u6642\u540c\u6b65\u53ef\u4ee5\u4f5c\u70ba\u4e00\u7a2e\u6709\u6548\u7684\u6578\u64da\u5099\u4efd\u7b56\u7565\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e5%ba%ab%e5%90%8c%e6%ad%a5-jBAMmgwUht\">\u5982\u4f55\u5be6\u73fe\u6578\u64da\u5eab\u540c\u6b65<\/h2>\n<p>\u4ee5\u4e0b\u662f\u5229\u7528\u89f8\u767c\u5668\u5be6\u73fe\u5169\u500b\u6578\u64da\u5eab\u9593\u540c\u6b65\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e8%a8%ad%e7%bd%ae%e6%95%b8%e6%93%9a%e5%ba%ab%e7%92%b0%e5%a2%83-jBAMmgwUht\">1. \u8a2d\u7f6e\u6578\u64da\u5eab\u74b0\u5883<\/h3>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u6709\u5169\u500b\u6578\u64da\u5eab\uff0c\u5047\u8a2d\u6211\u5011\u7684\u6578\u64da\u5eab\u5206\u5225\u70ba <code>db1<\/code> \u548c <code>db2<\/code>\u3002\u5728\u9019\u5169\u500b\u6578\u64da\u5eab\u4e2d\uff0c\u6211\u5011\u5c07\u540c\u6b65\u4e00\u500b\u540d\u70ba <code>users<\/code> \u7684\u8868\u3002<\/p>\n<h3 id=\"2-%e5%89%b5%e5%bb%ba%e8%a7%b8%e7%99%bc%e5%99%a8-jBAMmgwUht\">2. \u5275\u5efa\u89f8\u767c\u5668<\/h3>\n<p>\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u9700\u8981\u5728 <code>db1<\/code> \u4e2d\u5275\u5efa\u4e00\u500b\u89f8\u767c\u5668\uff0c\u7576 <code>users<\/code> \u8868\u4e2d\u6709\u6578\u64da\u63d2\u5165\u6216\u66f4\u65b0\u6642\uff0c\u81ea\u52d5\u5c07\u9019\u4e9b\u8b8a\u66f4\u540c\u6b65\u5230 <code>db2<\/code>\u3002<\/p>\n<pre><code>\nCREATE TRIGGER after_user_insert\nAFTER INSERT ON db1.users\nFOR EACH ROW\nBEGIN\n    INSERT INTO db2.users (id, name, email)\n    VALUES (NEW.id, NEW.name, NEW.email);\nEND;\n<\/code><\/pre>\n<pre><code>\nCREATE TRIGGER after_user_update\nAFTER UPDATE ON db1.users\nFOR EACH ROW\nBEGIN\n    UPDATE db2.users\n    SET name = NEW.name, email = NEW.email\n    WHERE id = NEW.id;\nEND;\n<\/code><\/pre>\n<h3 id=\"3-%e6%b8%ac%e8%a9%a6%e8%a7%b8%e7%99%bc%e5%99%a8-jBAMmgwUht\">3. \u6e2c\u8a66\u89f8\u767c\u5668<\/h3>\n<p>\u5728\u5275\u5efa\u4e86\u89f8\u767c\u5668\u4e4b\u5f8c\uff0c\u60a8\u53ef\u4ee5\u901a\u904e\u5411 <code>db1.users<\/code> \u8868\u4e2d\u63d2\u5165\u6216\u66f4\u65b0\u6578\u64da\u4f86\u6e2c\u8a66\u89f8\u767c\u5668\u7684\u529f\u80fd\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\u9032\u884c\u6e2c\u8a66\uff1a<\/p>\n<pre><code>\nINSERT INTO db1.users (id, name, email) VALUES (1, 'John Doe', 'john@example.com');\nUPDATE db1.users SET name = 'Jane Doe' WHERE id = 1;\n<\/code><\/pre>\n<p>\u7136\u5f8c\uff0c\u60a8\u53ef\u4ee5\u67e5\u8a62 <code>db2.users<\/code> \u8868\uff0c\u78ba\u8a8d\u6578\u64da\u662f\u5426\u5df2\u6210\u529f\u540c\u6b65\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-jBAMmgwUht\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528\u89f8\u767c\u5668\u9032\u884c\u6578\u64da\u540c\u6b65\u6642\uff0c\u60a8\u9700\u8981\u8003\u616e\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u89f8\u767c\u5668\u7684\u6027\u80fd\uff1a\u904e\u591a\u7684\u89f8\u767c\u5668\u53ef\u80fd\u6703\u5f71\u97ff\u6578\u64da\u5eab\u7684\u6027\u80fd\uff0c\u56e0\u6b64\u61c9\u8b39\u614e\u4f7f\u7528\u3002<\/li>\n<li>\u932f\u8aa4\u8655\u7406\uff1a\u78ba\u4fdd\u5728\u89f8\u767c\u5668\u4e2d\u6dfb\u52a0\u9069\u7576\u7684\u932f\u8aa4\u8655\u7406\u908f\u8f2f\uff0c\u4ee5\u9632\u6b62\u6578\u64da\u4e0d\u4e00\u81f4\u3002<\/li>\n<li>\u7248\u672c\u63a7\u5236\uff1a\u5728\u9032\u884c\u6578\u64da\u5eab\u7d50\u69cb\u8b8a\u66f4\u6642\uff0c\u8a18\u5f97\u66f4\u65b0\u89f8\u767c\u5668\u7684\u908f\u8f2f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-jBAMmgwUht\">\u7e3d\u7d50<\/h2>\n<p>\u5229\u7528\u89f8\u767c\u5668\u5be6\u73fe\u5169\u500b\u6578\u64da\u5eab\u4e4b\u9593\u7684\u540c\u6b65\u662f\u4e00\u7a2e\u9ad8\u6548\u4e14\u81ea\u52d5\u5316\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u901a\u904e\u8a2d\u7f6e\u9069\u7576\u7684\u89f8\u767c\u5668\uff0c\u60a8\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u5728\u4e0d\u540c\u6578\u64da\u5eab\u4e4b\u9593\u7684\u4e00\u81f4\u6027\u548c\u53ef\u7528\u6027\u3002\u7121\u8ad6\u662f\u7528\u65bc\u6578\u64da\u5197\u9918\u3001\u8ca0\u8f09\u5747\u8861\u9084\u662f\u6578\u64da\u5099\u4efd\uff0c\u89f8\u767c\u5668\u90fd\u80fd\u63d0\u4f9b\u5f37\u5927\u7684\u652f\u6301\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u90e8\u7f72\u60a8\u7684\u6578\u64da\u5eab\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5229\u7528\u89f8\u767c\u5668\u5728\u5169\u500b\u6578\u64da\u5eab\u4e4b\u9593\u5be6\u73fe\u9ad8\u6548\u540c\u6b65\uff0c\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u8207\u5373\u6642\u66f4\u65b0\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-174805","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/174805","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=174805"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/174805\/revisions"}],"predecessor-version":[{"id":174806,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/174805\/revisions\/174806"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=174805"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=174805"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=174805"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}