{"id":186104,"date":"2024-11-11T03:08:19","date_gmt":"2024-11-10T19:08:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/186104\/"},"modified":"2024-11-11T03:08:20","modified_gmt":"2024-11-10T19:08:20","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9c%ac%e5%9c%b0%e7%9b%a3%e8%81%bd%e7%9a%84%e5%af%a6%e7%8f%be%e5%8f%8a%e5%85%b6%e4%bd%9c%e7%94%a8%e5%88%86%e6%9e%90%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9c%ac%e5%9c%b0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/186104\/","title":{"rendered":"\u6578\u64da\u5eab\u672c\u5730\u76e3\u807d\u7684\u5be6\u73fe\u53ca\u5176\u4f5c\u7528\u5206\u6790\uff08\u6578\u64da\u5eab\u672c\u5730\u76e3\u807d\uff09"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9c%ac%e5%9c%b0%e7%9b%a3%e8%81%bd%e7%9a%84%e5%af%a6%e7%8f%be%e5%8f%8a%e5%85%b6%e4%bd%9c%e7%94%a8%e5%88%86%e6%9e%90-FBrvDdKgyo\">\u6578\u64da\u5eab\u672c\u5730\u76e3\u807d\u7684\u5be6\u73fe\u53ca\u5176\u4f5c\u7528\u5206\u6790<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u53ef\u9760\u6027\u5c0d\u65bc\u4f01\u696d\u7684\u904b\u71df\u81f3\u95dc\u91cd\u8981\u3002\u6578\u64da\u5eab\u672c\u5730\u76e3\u807d\uff08Local Database Listening\uff09\u662f\u4e00\u7a2e\u6709\u6548\u7684\u6280\u8853\uff0c\u65e8\u5728\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u97ff\u61c9\u901f\u5ea6\u548c\u6578\u64da\u4e00\u81f4\u6027\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u6578\u64da\u5eab\u672c\u5730\u76e3\u807d\u7684\u5be6\u73fe\u65b9\u5f0f\u53ca\u5176\u5728\u5be6\u969b\u61c9\u7528\u4e2d\u7684\u4f5c\u7528\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9c%ac%e5%9c%b0%e7%9b%a3%e8%81%bd%ef%bc%9f-FBrvDdKgyo\">\u4ec0\u9ebc\u662f\u6578\u64da\u5eab\u672c\u5730\u76e3\u807d\uff1f<\/h2>\n<p>\u6578\u64da\u5eab\u672c\u5730\u76e3\u807d\u662f\u6307\u5728\u6578\u64da\u5eab\u7cfb\u7d71\u5167\u90e8\u9032\u884c\u7684\u76e3\u807d\u64cd\u4f5c\uff0c\u901a\u5e38\u7528\u65bc\u6355\u6349\u6578\u64da\u8b8a\u66f4\u4e8b\u4ef6\u3002\u9019\u7a2e\u6280\u8853\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u53ca\u6642\u7372\u53d6\u6578\u64da\u8b8a\u66f4\u7684\u901a\u77e5\uff0c\u5f9e\u800c\u5be6\u73fe\u66f4\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\u548c\u61c9\u7528\u53cd\u61c9\u3002\u8207\u9060\u7a0b\u76e3\u807d\u76f8\u6bd4\uff0c\u672c\u5730\u76e3\u807d\u7684\u5ef6\u9072\u66f4\u4f4e\uff0c\u6027\u80fd\u66f4\u4f73\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9c%ac%e5%9c%b0%e7%9b%a3%e8%81%bd%e7%9a%84%e5%af%a6%e7%8f%be%e6%96%b9%e5%bc%8f-FBrvDdKgyo\">\u6578\u64da\u5eab\u672c\u5730\u76e3\u807d\u7684\u5be6\u73fe\u65b9\u5f0f<\/h2>\n<p>\u6578\u64da\u5eab\u672c\u5730\u76e3\u807d\u7684\u5be6\u73fe\u901a\u5e38\u4f9d\u8cf4\u65bc\u6578\u64da\u5eab\u7684\u89f8\u767c\u5668\uff08Triggers\uff09\u548c\u4e8b\u4ef6\uff08Events\uff09\u6a5f\u5236\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u5be6\u73fe\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e8%a7%b8%e7%99%bc%e5%99%a8-FBrvDdKgyo\">1. \u4f7f\u7528\u89f8\u767c\u5668<\/h3>\n<p>\u89f8\u767c\u5668\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u5b58\u5132\u904e\u7a0b\uff0c\u7576\u7279\u5b9a\u4e8b\u4ef6\uff08\u5982\u63d2\u5165\u3001\u66f4\u65b0\u6216\u522a\u9664\uff09\u767c\u751f\u6642\u81ea\u52d5\u57f7\u884c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u89f8\u767c\u5668\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE TRIGGER after_insert_example\nAFTER INSERT ON example_table\nFOR EACH ROW\nBEGIN\n    INSERT INTO log_table (action, timestamp)\n    VALUES ('INSERT', NOW());\nEND;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6bcf\u7576\u5728 `example_table` \u4e2d\u63d2\u5165\u65b0\u6578\u64da\u6642\uff0c\u89f8\u767c\u5668\u6703\u81ea\u52d5\u5728 `log_table` \u4e2d\u8a18\u9304\u9019\u4e00\u64cd\u4f5c\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e4%ba%8b%e4%bb%b6%e9%80%9a%e7%9f%a5-FBrvDdKgyo\">2. \u4f7f\u7528\u4e8b\u4ef6\u901a\u77e5<\/h3>\n<p>\u8a31\u591a\u6578\u64da\u5eab\u7cfb\u7d71\uff08\u5982 PostgreSQL\uff09\u652f\u6301\u4e8b\u4ef6\u901a\u77e5\u529f\u80fd\uff0c\u5141\u8a31\u61c9\u7528\u7a0b\u5e8f\u8a02\u95b1\u7279\u5b9a\u4e8b\u4ef6\u3002\u7576\u4e8b\u4ef6\u767c\u751f\u6642\uff0c\u6578\u64da\u5eab\u6703\u767c\u9001\u901a\u77e5\u7d66\u6240\u6709\u8a02\u95b1\u8005\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 PostgreSQL \u7684\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>LISTEN new_data;\nNOTIFY new_data, 'New row added to example_table';<\/code><\/pre>\n<p>\u9019\u6a23\uff0c\u7576 `example_table` \u4e2d\u6dfb\u52a0\u65b0\u884c\u6642\uff0c\u6240\u6709\u8a02\u95b1\u4e86 `new_data` \u4e8b\u4ef6\u7684\u61c9\u7528\u7a0b\u5e8f\u90fd\u6703\u6536\u5230\u901a\u77e5\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9c%ac%e5%9c%b0%e7%9b%a3%e8%81%bd%e7%9a%84%e4%bd%9c%e7%94%a8%e5%88%86%e6%9e%90-FBrvDdKgyo\">\u6578\u64da\u5eab\u672c\u5730\u76e3\u807d\u7684\u4f5c\u7528\u5206\u6790<\/h2>\n<p>\u6578\u64da\u5eab\u672c\u5730\u76e3\u807d\u7684\u4e3b\u8981\u4f5c\u7528\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u5373\u6642\u6578\u64da\u66f4\u65b0\uff1a<\/strong>\u901a\u904e\u672c\u5730\u76e3\u807d\uff0c\u61c9\u7528\u7a0b\u5e8f\u53ef\u4ee5\u5373\u6642\u7372\u53d6\u6578\u64da\u8b8a\u66f4\uff0c\u5f9e\u800c\u63d0\u9ad8\u7528\u6236\u9ad4\u9a57\u3002<\/li>\n<li><strong>\u6578\u64da\u4e00\u81f4\u6027\uff1a<\/strong>\u672c\u5730\u76e3\u807d\u53ef\u4ee5\u5e6b\u52a9\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\uff0c\u7279\u5225\u662f\u5728\u591a\u7528\u6236\u74b0\u5883\u4e2d\u3002<\/li>\n<li><strong>\u6027\u80fd\u512a\u5316\uff1a<\/strong>\u7531\u65bc\u672c\u5730\u76e3\u807d\u6e1b\u5c11\u4e86\u7db2\u7d61\u5ef6\u9072\uff0c\u80fd\u5920\u986f\u8457\u63d0\u9ad8\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u6027\u80fd\u3002<\/li>\n<li><strong>\u7c21\u5316\u4ee3\u78bc\uff1a<\/strong>\u4f7f\u7528\u89f8\u767c\u5668\u548c\u4e8b\u4ef6\u901a\u77e5\u53ef\u4ee5\u6e1b\u5c11\u61c9\u7528\u7a0b\u5e8f\u4e2d\u5c0d\u6578\u64da\u5eab\u72c0\u614b\u7684\u8f2a\u8a62\uff0c\u5f9e\u800c\u7c21\u5316\u4ee3\u78bc\u7d50\u69cb\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-FBrvDdKgyo\">\u7d50\u8ad6<\/h2>\n<p>\u6578\u64da\u5eab\u672c\u5730\u76e3\u807d\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u6280\u8853\uff0c\u80fd\u5920\u986f\u8457\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002\u901a\u904e\u4f7f\u7528\u89f8\u767c\u5668\u548c\u4e8b\u4ef6\u901a\u77e5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5be6\u73fe\u5373\u6642\u7684\u6578\u64da\u66f4\u65b0\u548c\u66f4\u9ad8\u7684\u4e00\u81f4\u6027\u3002\u5728\u7576\u4eca\u5feb\u901f\u8b8a\u5316\u7684\u5546\u696d\u74b0\u5883\u4e2d\uff0c\u9019\u7a2e\u6280\u8853\u7121\u7591\u662f\u63d0\u5347\u61c9\u7528\u7a0b\u5e8f\u8cea\u91cf\u7684\u91cd\u8981\u5de5\u5177\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\u61c9\u7528\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u5e6b\u52a9\u60a8\u5be6\u73fe\u6700\u4f73\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u6578\u64da\u5eab\u672c\u5730\u76e3\u807d\u7684\u5be6\u73fe\u65b9\u6cd5\u53ca\u5176\u5728\u6578\u64da\u8b8a\u66f4\u76e3\u63a7\u4e2d\u7684\u91cd\u8981\u4f5c\u7528\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\u8207\u5373\u6642\u6027\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-186104","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186104","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=186104"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186104\/revisions"}],"predecessor-version":[{"id":186105,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186104\/revisions\/186105"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=186104"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=186104"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=186104"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}