{"id":182938,"date":"2024-11-10T00:35:24","date_gmt":"2024-11-09T16:35:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/182938\/"},"modified":"2024-11-10T00:35:24","modified_gmt":"2024-11-09T16:35:24","slug":"%e5%af%a6%e6%99%82%e6%8e%8c%e6%8f%a1%e6%95%b8%e6%93%9a%e8%ae%8a%e5%8b%95%ef%bc%8c%e6%95%b8%e6%93%9a%e5%ba%ab%e4%ba%8b%e4%bb%b6%e9%80%9a%e7%9f%a5%e5%8a%a9%e4%bd%a0%e8%a7%a3%e6%b1%ba%e7%93%b6%e9%a0%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/182938\/","title":{"rendered":"\u5be6\u6642\u638c\u63e1\u6578\u64da\u8b8a\u52d5\uff0c\u6578\u64da\u5eab\u4e8b\u4ef6\u901a\u77e5\u52a9\u4f60\u89e3\u6c7a\u74f6\u9838\u554f\u984c (\u6578\u64da\u5eab\u4e8b\u4ef6\u901a\u77e5)"},"content":{"rendered":"<h1 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id=\"%e5%a6%82%e4%bd%95%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e5%ba%ab%e4%ba%8b%e4%bb%b6%e9%80%9a%e7%9f%a5-GybfoOxNBS\">\u5982\u4f55\u5be6\u73fe\u6578\u64da\u5eab\u4e8b\u4ef6\u901a\u77e5<\/h2>\n<p>\u5be6\u73fe\u6578\u64da\u5eab\u4e8b\u4ef6\u901a\u77e5\u7684\u5177\u9ad4\u6b65\u9a5f\u53ef\u80fd\u56e0\u6578\u64da\u5eab\u7cfb\u7d71\u800c\u7570\u3002\u4ee5\u4e0b\u662f\u4ee5 PostgreSQL \u70ba\u4f8b\u7684\u57fa\u672c\u5be6\u73fe\u6b65\u9a5f\uff1a<\/p>\n<pre><code>-- \u5275\u5efa\u4e00\u500b\u89f8\u767c\u5668\u51fd\u6578\nCREATE OR REPLACE FUNCTION notify_event()\nRETURNS TRIGGER AS $$\nBEGIN\n    PERFORM pg_notify('data_change', TG_TABLE_NAME || ' ' || TG_OP);\n    RETURN NEW;\nEND;\n$$ LANGUAGE plpgsql;\n\n-- \u5275\u5efa\u89f8\u767c\u5668\nCREATE TRIGGER data_change_trigger\nAFTER INSERT OR UPDATE OR DELETE ON your_table\nFOR EACH ROW EXECUTE FUNCTION notify_event();\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u7576\u6307\u5b9a\u8868\u7684\u6578\u64da\u767c\u751f\u8b8a\u5316\u6642\uff0c\u89f8\u767c\u5668\u6703\u81ea\u52d5\u8abf\u7528\u51fd\u6578\uff0c\u4e26\u901a\u904e pg_notify \u767c\u9001\u901a\u77e5\u3002<\/p>\n<h2 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