{"id":200857,"date":"2025-05-06T09:57:56","date_gmt":"2025-05-06T01:57:56","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200857\/"},"modified":"2025-05-06T09:57:56","modified_gmt":"2025-05-06T01:57:56","slug":"mysql-%e7%bb%9f%e8%ae%a1-30-%e4%b8%87%e6%9d%a1%e6%95%b0%e6%8d%ae%e8%80%97%e6%97%b6-13-%e7%a7%92%ef%bc%8c%e6%ad%a3%e5%b8%b8%e5%90%97%ef%bc%9f%e5%a6%82%e4%bd%95%e4%bc%98%e5%8c%96%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200857\/","title":{"rendered":"MYSQL \u7edf\u8ba1 30 \u4e07\u6761\u6570\u636e\u8017\u65f6 13 \u79d2\uff0c\u6b63\u5e38\u5417\uff1f\u5982\u4f55\u4f18\u5316\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>MYSQL \u7edf\u8ba1 30 \u4e07\u6761\u6570\u636e\u8017\u65f6 13 \u79d2\uff0c\u6b63\u5e38\u5417\uff1f\u5982\u4f55\u4f18\u5316\uff1f<\/h1>\n<p>\u6b22\u8fce\u5404\u4f4d\u5c0f\u4f19\u4f34\u6765\u5230\u4e3b\u673a\u5b9d\u8d1d\uff0c\u76f8\u805a\u4e8e\u6b64\u90fd\u662f\u7f18\u54c8\u54c8\u54c8\uff01\u4eca\u5929\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u8bb2\u5230\u7b49\u7b49\u77e5\u8bc6\uff0c\u5982\u679c\u4f60\u5bf9\u76f8\u5173\u7684\u77e5\u8bc6\u975e\u5e38\u611f\u5174\u8da3\u6216\u8005\u6b63\u5728\u81ea\u5b66\uff0c\u90fd\u53ef\u4ee5\u5173\u6ce8\u6211\uff0c\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u6587\u7ae0\uff01\u5f53\u7136\uff0c\u6709\u4ec0\u4e48\u5efa\u8bae\u4e5f\u6b22\u8fce\u5728\u8bc4\u8bba\u7559\u8a00\u63d0\u51fa\uff01\u4e00\u8d77\u5b66\u4e60\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241117\/17318329786739ac92880f6.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>mysql \u7edf\u8ba1\u8fd1 30 \u4e07\u6761\u6570\u636e\u65f6\u95f4\u8fc7\u957f\uff1f<\/strong><\/p>\n<p>\u5f53\u9700\u8981\u7edf\u8ba1\u5927\u91cf\u6570\u636e\u65f6\uff0c\u4f8b\u5982\u8fd9\u91cc\u63d0\u5230\u7684\u4e8c\u5341\u4e5d\u4e07\u6761\u6570\u636e\uff0cmysql \u7684\u6267\u884c\u901f\u5ea6\u4f3c\u4e4e\u4ee4\u4eba\u62c5\u5fe7\uff0c\u76f4\u63a5\u4f7f\u7528 count(*) \u67e5\u8be2\u9700\u8981 13 \u79d2\u591a\u3002\u5bf9\u4e8e\u8fd9\u79cd\u6570\u91cf\u7ea7\u7684\u6570\u636e\uff0c\u8fd9\u4e2a\u65f6\u95f4\u5f00\u9500\u662f\u5426\u6b63\u5e38\u5462\uff1f<\/p>\n<p><strong>\u53ef\u80fd\u7684\u4f18\u5316\u65b9\u6848<\/strong><\/p>\n<ul>\n<li><strong>\u907f\u514d\u4f7f\u7528 count(*)\uff1a<\/strong> count(*) \u5bf9\u6574\u4e2a\u8868\u8fdb\u884c\u5168\u8868\u626b\u63cf\uff0c\u5bf9\u4e8e\u5927\u8868\u6765\u8bf4\u4ee3\u4ef7\u6bd4\u8f83\u9ad8\u3002\u5efa\u8bae\u5c06\u5176\u66ff\u6362\u4e3a\u6761\u4ef6\u67e5\u8be2\u6216\u7d22\u5f15\u626b\u63cf\u3002<\/li>\n<li><strong>\u7ef4\u62a4\u7edf\u8ba1\u6570\u636e\uff1a<\/strong> \u4e0d\u8981\u5728\u6bcf\u6b21\u67e5\u8be2\u65f6\u90fd\u7edf\u8ba1\uff0c\u53ef\u4ee5\u8003\u8651\u901a\u8fc7\u89e6\u53d1\u5668\u6216\u5176\u4ed6\u673a\u5236\u5728\u6570\u636e\u66f4\u65b0\u65f6\u81ea\u52a8\u7ef4\u62a4\u7edf\u8ba1\u6570\u636e\u3002<\/li>\n<li><strong>\u5229\u7528\u89e6\u53d1\u5668\uff1a<\/strong> mysql \u652f\u6301\u4f7f\u7528\u89e6\u53d1\u5668\u6765\u5728\u4e8b\u4ef6\u53d1\u751f\u65f6\u81ea\u52a8\u6267\u884c\u4efb\u52a1\uff0c\u53ef\u4ee5\u5728\u6570\u636e\u66f4\u65b0\u65f6\u81ea\u52a8\u66f4\u65b0\u7edf\u8ba1\u6570\u636e\uff0c\u907f\u514d\u624b\u52a8\u7ef4\u62a4\u3002<\/li>\n<\/ul>\n<p><strong>\u5177\u4f53\u5b9e\u73b0<\/strong><\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528\u89e6\u53d1\u5668\u7ef4\u62a4\u7edf\u8ba1\u6570\u636e\u7684\u793a\u4f8b\uff1a<\/p>\n<pre>CREATE TRIGGER `trigger_t_order` AFTER INSERT ON `t_order_old`\nFOR EACH ROW\nBEGIN\n  -- \u66f4\u65b0\u7edf\u8ba1\u6570\u636e\n  UPDATE `t_order_stats` SET `count` = `count` + 1 WHERE `order_id` = NEW.`order_id`;\nEND<\/pre>\n<p>\u901a\u8fc7\u8fd9\u6837\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u4f7f\u7528\u6237\u5728\u9700\u8981\u65f6\u5feb\u901f\u83b7\u53d6\u7edf\u8ba1\u6570\u636e\uff0c\u800c\u65e0\u9700\u6bcf\u6b21\u90fd\u5bf9\u5927\u91cf\u6570\u636e\u8fdb\u884c\u626b\u63cf\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u300aMYSQL \u7edf\u8ba1 30 \u4e07\u6761\u6570\u636e\u8017\u65f6 13 \u79d2\uff0c\u6b63\u5e38\u5417\uff1f\u5982\u4f55\u4f18\u5316\uff1f\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8e\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff01<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>MYSQL \u7edf\u8ba1 30 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