{"id":6432,"date":"2024-11-14T09:17:37","date_gmt":"2024-11-14T01:17:37","guid":{"rendered":"https:\/\/fwq.ai\/blog\/6432\/"},"modified":"2024-11-14T09:17:37","modified_gmt":"2024-11-14T01:17:37","slug":"mysql%e8%a7%a6%e5%8f%91%e5%99%a8%e6%9c%89%e5%87%a0%e7%a7%8d","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/6432\/","title":{"rendered":"mysql\u89e6\u53d1\u5668\u6709\u51e0\u79cd"},"content":{"rendered":"<blockquote><p>\n  mysql\u63d0\u4f9b\u4e24\u79cd\u7c7b\u578b\u7684\u89e6\u53d1\u5668\uff1a\u884c\u7ea7\u548c\u8bed\u53e5\u7ea7\u3002\u884c\u7ea7\u89e6\u53d1\u5668\u5728\u5355\u4e2a\u884c\u64cd\u4f5c\uff08\u63d2\u5165\u3001\u66f4\u65b0\u3001\u5220\u9664\uff09\u65f6\u89e6\u53d1\uff0c\u53ef\u5206\u4e3a before\u3001after\u3001instead of \u4e09\u79cd\uff1b\u8bed\u53e5\u7ea7\u89e6\u53d1\u5668\u5728\u591a\u884c\u64cd\u4f5c\uff08insert\u3001update\u3001delete\u3001merge\uff09\u65f6\u89e6\u53d1\uff0c\u53ef\u5206\u4e3a before\u3001after \u4e24\u79cd\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202408\/02\/2024080217553091867.jpg\" class=\"aligncenter\" title=\"mysql\u89e6\u53d1\u5668\u6709\u51e0\u79cd\u63d2\u56fe\" alt=\"mysql\u89e6\u53d1\u5668\u6709\u51e0\u79cd\u63d2\u56fe\" \/><\/p>\n<p><strong>MySQL \u89e6\u53d1\u5668\u7c7b\u578b<\/strong><\/p>\n<p>MySQL \u63d0\u4f9b\u4e24\u79cd\u7c7b\u578b\u7684\u89e6\u53d1\u5668\uff1a<\/p>\n<p><strong>1. \u884c\u7ea7\u89e6\u53d1\u5668<\/strong><\/p>\n<p>\u884c\u7ea7\u89e6\u53d1\u5668\u5728\u5bf9\u5355\u4e2a\u8868\u4e2d\u7684\u7279\u5b9a\u884c\u8fdb\u884c\u63d2\u5165\u3001\u66f4\u65b0\u6216\u5220\u9664\u64cd\u4f5c\u65f6\u89e6\u53d1\u3002\u6709\u4e09\u79cd\u7c7b\u578b\uff1a<\/p>\n<ul>\n<li> <strong>BEFORE<\/strong>\uff1a\u5728\u64cd\u4f5c\u6267\u884c\u4e4b\u524d\u8fd0\u884c\u3002<\/li>\n<li> <strong>AFTER<\/strong>\uff1a\u5728\u64cd\u4f5c\u6267\u884c\u4e4b\u540e\u8fd0\u884c\u3002<\/li>\n<li> <strong>INSTEAD OF<\/strong>\uff1a\u66ff\u4ee3\u64cd\u4f5c\uff08\u901a\u5e38\u7528\u4e8e\u6267\u884c\u7279\u5b9a\u7684\u81ea\u5b9a\u4e49\u64cd\u4f5c\uff09\u3002<\/li>\n<\/ul>\n<p><strong>2. \u8bed\u53e5\u7ea7\u89e6\u53d1\u5668<\/strong><\/p>\n<p>\u8bed\u53e5\u7ea7\u89e6\u53d1\u5668\u5728\u5bf9\u8868\u4e2d\u7684\u591a\u884c\u6267\u884c INSERT\u3001UPDATE\u3001DELETE \u6216 MERGE \u8bed\u53e5\u65f6\u89e6\u53d1\u3002\u6709\u4e24\u79cd\u7c7b\u578b\uff1a<\/p>\n<ul>\n<li> <strong>BEFORE<\/strong>\uff1a\u5728\u4efb\u4f55\u884c\u53d7\u5f71\u54cd\u4e4b\u524d\u8fd0\u884c\u3002<\/li>\n<li> <strong>AFTER<\/strong>\uff1a\u5728\u6240\u6709\u53d7\u5f71\u54cd\u7684\u884c\u90fd\u5904\u7406\u5b8c\u6bd5\u4e4b\u540e\u8fd0\u884c\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662f\u89e6\u53d1\u5668\u6709\u51e0\u79cd\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>mysql\u63d0\u4f9b\u4e24\u79cd\u7c7b\u578b\u7684\u89e6\u53d1\u5668\uff1a\u884c\u7ea7\u548c\u8bed\u53e5\u7ea7\u3002\u884c\u7ea7\u89e6\u53d1\u5668\u5728\u5355\u4e2a\u884c\u64cd\u4f5c\uff08\u63d2\u5165\u3001\u66f4\u65b0\u3001\u5220\u9664\uff09\u65f6\u89e6\u53d1\uff0c\u53ef\u5206\u4e3a before\u3001after\u3001instead of \u4e09\u79cd\uff1b\u8bed\u53e5\u7ea7\u89e6\u53d1\u5668\u5728\u591a\u884c\u64cd\u4f5c\uff08insert\u3001update\u3001delete\u3001merge\uff09\u65f6\u89e6\u53d1\uff0c\u53ef\u5206\u4e3a before\u3001after \u4e24\u79cd\u3002 MySQL \u89e6\u53d1\u5668\u7c7b\u578b MySQL \u63d0\u4f9b\u4e24\u79cd\u7c7b\u578b\u7684\u89e6\u53d1\u5668\uff1a 1. \u884c\u7ea7\u89e6\u53d1\u5668 \u884c\u7ea7\u89e6\u53d1\u5668\u5728\u5bf9\u5355\u4e2a\u8868\u4e2d\u7684\u7279\u5b9a\u884c\u8fdb\u884c\u63d2\u5165\u3001\u66f4\u65b0\u6216\u5220\u9664\u64cd\u4f5c\u65f6\u89e6\u53d1\u3002\u6709\u4e09\u79cd\u7c7b\u578b\uff1a BEFORE\uff1a\u5728\u64cd\u4f5c\u6267\u884c\u4e4b\u524d\u8fd0\u884c\u3002 AFTER\uff1a\u5728\u64cd\u4f5c\u6267\u884c\u4e4b\u540e\u8fd0\u884c\u3002 INSTEAD OF\uff1a\u66ff\u4ee3\u64cd\u4f5c\uff08\u901a\u5e38\u7528\u4e8e\u6267\u884c\u7279\u5b9a\u7684\u81ea\u5b9a\u4e49\u64cd\u4f5c\uff09\u3002 2. \u8bed\u53e5\u7ea7\u89e6\u53d1\u5668 \u8bed\u53e5\u7ea7\u89e6\u53d1\u5668\u5728\u5bf9\u8868\u4e2d\u7684\u591a\u884c\u6267\u884c INSERT\u3001UPDATE\u3001DELETE \u6216 MERGE \u8bed\u53e5\u65f6\u89e6\u53d1\u3002\u6709\u4e24\u79cd\u7c7b\u578b\uff1a BEFORE\uff1a\u5728\u4efb\u4f55\u884c\u53d7\u5f71\u54cd\u4e4b\u524d\u8fd0\u884c\u3002 AFTER\uff1a\u5728\u6240\u6709\u53d7\u5f71\u54cd\u7684\u884c\u90fd\u5904\u7406\u5b8c\u6bd5\u4e4b\u540e\u8fd0\u884c\u3002 \u4ee5\u4e0a\u5c31\u662f\u89e6\u53d1\u5668\u6709\u51e0\u79cd\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-6432","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6432","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=6432"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6432\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=6432"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=6432"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=6432"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}