{"id":6321,"date":"2024-11-14T11:33:09","date_gmt":"2024-11-14T03:33:09","guid":{"rendered":"https:\/\/fwq.ai\/blog\/6321\/"},"modified":"2024-11-14T11:33:09","modified_gmt":"2024-11-14T03:33:09","slug":"mysql%e8%a7%a6%e5%8f%91%e5%99%a8%e6%9c%89%e5%93%aa%e4%ba%9b%e7%b1%bb%e5%9e%8b","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/6321\/","title":{"rendered":"mysql\u89e6\u53d1\u5668\u6709\u54ea\u4e9b\u7c7b\u578b"},"content":{"rendered":"<blockquote><p>\n  mysql\u652f\u6301\u56db\u79cd\u7c7b\u578b\u7684\u89e6\u53d1\u5668\uff1a\u4e4b\u524d\u89e6\u53d1\u5668\uff1a\u5728\u4e8b\u4ef6\u53d1\u751f\u524d\u6267\u884c\uff0c\u53ef\u4ee5\u963b\u6b62\u4e8b\u4ef6\u53d1\u751f\u3002\u4e4b\u540e\u89e6\u53d1\u5668\uff1a\u5728\u4e8b\u4ef6\u53d1\u751f\u540e\u6267\u884c\uff0c\u65e0\u6cd5\u963b\u6b62\u4e8b\u4ef6\uff0c\u4f46\u53ef\u5904\u7406\u53d8\u66f4\u3002\u66ff\u6362\u89e6\u53d1\u5668\uff1a\u4ee5\u4e0d\u540c\u65b9\u5f0f\u53d6\u4ee3\u539f\u672c\u7684\u4e8b\u4ef6\u3002\u5b9a\u65f6\u89e6\u53d1\u5668\uff1a\u5728\u7279\u5b9a\u65f6\u95f4\u6216\u95f4\u9694\u540e\u6267\u884c\uff0c\u4e0d\u4f9d\u8d56\u4e8e\u8868\u4e2d\u7684\u4e8b\u4ef6\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202407\/31\/2024073122341810321.jpg\" class=\"aligncenter\" title=\"mysql\u89e6\u53d1\u5668\u6709\u54ea\u4e9b\u7c7b\u578b\u63d2\u56fe\" alt=\"mysql\u89e6\u53d1\u5668\u6709\u54ea\u4e9b\u7c7b\u578b\u63d2\u56fe\" \/><\/p>\n<p><strong>MySQL\u89e6\u53d1\u5668\u7684\u7c7b\u578b<\/strong><\/p>\n<p>\u89e6\u53d1\u5668\u662f\u4e00\u79cd\u6570\u636e\u5e93\u5bf9\u8c61\uff0c\u5f53\u7279\u5b9a\u4e8b\u4ef6\u5728\u5173\u8054\u7684\u8868\u4e2d\u53d1\u751f\u65f6\uff0c\u5b83\u4f1a\u81ea\u52a8\u6267\u884c\u9884\u5b9a\u4e49\u7684\u64cd\u4f5c\u3002MySQL\u652f\u6301\u4ee5\u4e0b\u7c7b\u578b\u7684\u89e6\u53d1\u5668\uff1a<\/p>\n<p><strong>1. \u4e4b\u524d\u89e6\u53d1\u5668 (BEFORE)<\/strong><\/p>\n<ul>\n<li>\u5728\u4e8b\u4ef6\u53d1\u751f\u4e4b\u524d\u6267\u884c\u3002<\/li>\n<li>\u53ef\u4ee5\u963b\u6b62\u5373\u5c06\u53d1\u751f\u7684\u4e8b\u4ef6\uff0c\u4f8b\u5982\u63d2\u5165\u6216\u66f4\u65b0\u8bb0\u5f55\u3002<\/li>\n<\/ul>\n<p><strong>2. \u4e4b\u540e\u89e6\u53d1\u5668 (AFTER)<\/strong><\/p>\n<ul>\n<li>\u5728\u4e8b\u4ef6\u53d1\u751f\u4e4b\u540e\u6267\u884c\u3002<\/li>\n<li>\u65e0\u6cd5\u963b\u6b62\u4e8b\u4ef6\uff0c\u4f46\u53ef\u4ee5\u5bf9\u5df2\u53d1\u751f\u7684\u53d8\u66f4\u8fdb\u884c\u5904\u7406\u3002<\/li>\n<\/ul>\n<p><strong>3. \u66ff\u6362\u89e6\u53d1\u5668 (INSTEAD OF)<\/strong><\/p>\n<ul>\n<li>\u4ee5\u4e0d\u540c\u7684\u65b9\u5f0f\u53d6\u4ee3\u539f\u672c\u7684\u4e8b\u4ef6\u3002<\/li>\n<li>\u4ec5\u9002\u7528\u4e8eINSERT\u3001UPDATE\u548cDELETE\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<p><strong>4. \u5b9a\u65f6\u89e6\u53d1\u5668 (SCHEDULE)<\/strong><\/p>\n<ul>\n<li>\u5728\u7279\u5b9a\u65f6\u95f4\u6216\u95f4\u9694\u95f4\u9694\u540e\u6267\u884c\u3002<\/li>\n<li>\u4e0d\u4f9d\u8d56\u4e8e\u8868\u4e2d\u7684\u4e8b\u4ef6\u3002<\/li>\n<\/ul>\n<p><strong>\u89e6\u53d1\u5668\u4e8b\u4ef6<\/strong><\/p>\n<p>\u89e6\u53d1\u5668\u53ef\u4ee5\u9488\u5bf9\u4ee5\u4e0b\u4e8b\u4ef6\u8fdb\u884c\u89e6\u53d1\uff1a<\/p>\n<ul>\n<li>INSERT<\/li>\n<li>UPDATE<\/li>\n<li>DELETE<\/li>\n<li>TRUNCATE<\/li>\n<\/ul>\n<p><strong>\u89e6\u53d1\u5668\u64cd\u4f5c<\/strong><\/p>\n<p>\u89e6\u53d1\u5668\u53ef\u4ee5\u6267\u884c\u5404\u79cd\u64cd\u4f5c\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u63d2\u5165\u6216\u66f4\u65b0\u5176\u4ed6\u8868\u4e2d\u7684\u8bb0\u5f55<\/li>\n<li>\u53d1\u9001\u7535\u5b50\u90ae\u4ef6\u901a\u77e5<\/li>\n<li>\u8bb0\u5f55\u4e8b\u4ef6\u65e5\u5fd7<\/li>\n<li>\u6267\u884c\u590d\u6742\u7684\u4e1a\u52a1\u903b\u8f91<\/li>\n<\/ul>\n<p><strong>\u9009\u62e9\u5408\u9002\u7684\u89e6\u53d1\u5668\u7c7b\u578b<\/strong><\/p>\n<p>\u9009\u62e9\u5408\u9002\u7684\u89e6\u53d1\u5668\u7c7b\u578b\u53d6\u51b3\u4e8e\u89e6\u53d1\u5668\u7684\u9884\u671f\u884c\u4e3a\u548c\u9700\u8981\u5b8c\u6210\u7684\u64cd\u4f5c\u3002<\/p>\n<ul>\n<li>\u963b\u6b62\u4e8b\u4ef6\uff1aBEFORE\u89e6\u53d1\u5668<\/li>\n<li>\u5904\u7406\u53d8\u66f4\uff1aAFTER\u89e6\u53d1\u5668<\/li>\n<li>\u4ee5\u4e0d\u540c\u65b9\u5f0f\u66ff\u6362\u4e8b\u4ef6\uff1aINSTEAD OF\u89e6\u53d1\u5668<\/li>\n<li>\u5728\u7279\u5b9a\u65f6\u95f4\u95f4\u9694\u540e\u6267\u884c\uff1aSCHEDULE\u89e6\u53d1\u5668<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662f\u89e6\u53d1\u5668\u6709\u54ea\u4e9b\u7c7b\u578b\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\u652f\u6301\u56db\u79cd\u7c7b\u578b\u7684\u89e6\u53d1\u5668\uff1a\u4e4b\u524d\u89e6\u53d1\u5668\uff1a\u5728\u4e8b\u4ef6\u53d1\u751f\u524d\u6267\u884c\uff0c\u53ef\u4ee5\u963b\u6b62\u4e8b\u4ef6\u53d1\u751f\u3002\u4e4b\u540e\u89e6\u53d1\u5668\uff1a\u5728\u4e8b\u4ef6\u53d1\u751f\u540e\u6267\u884c\uff0c\u65e0\u6cd5\u963b\u6b62\u4e8b\u4ef6\uff0c\u4f46\u53ef\u5904\u7406\u53d8\u66f4\u3002\u66ff\u6362\u89e6\u53d1\u5668\uff1a\u4ee5\u4e0d\u540c\u65b9\u5f0f\u53d6\u4ee3\u539f\u672c\u7684\u4e8b\u4ef6\u3002\u5b9a\u65f6\u89e6\u53d1\u5668\uff1a\u5728\u7279\u5b9a\u65f6\u95f4\u6216\u95f4\u9694\u540e\u6267\u884c\uff0c\u4e0d\u4f9d\u8d56\u4e8e\u8868\u4e2d\u7684\u4e8b\u4ef6\u3002 MySQL\u89e6\u53d1\u5668\u7684\u7c7b\u578b \u89e6\u53d1\u5668\u662f\u4e00\u79cd\u6570\u636e\u5e93\u5bf9\u8c61\uff0c\u5f53\u7279\u5b9a\u4e8b\u4ef6\u5728\u5173\u8054\u7684\u8868\u4e2d\u53d1\u751f\u65f6\uff0c\u5b83\u4f1a\u81ea\u52a8\u6267\u884c\u9884\u5b9a\u4e49\u7684\u64cd\u4f5c\u3002MySQL\u652f\u6301\u4ee5\u4e0b\u7c7b\u578b\u7684\u89e6\u53d1\u5668\uff1a 1. \u4e4b\u524d\u89e6\u53d1\u5668 (BEFORE) \u5728\u4e8b\u4ef6\u53d1\u751f\u4e4b\u524d\u6267\u884c\u3002 \u53ef\u4ee5\u963b\u6b62\u5373\u5c06\u53d1\u751f\u7684\u4e8b\u4ef6\uff0c\u4f8b\u5982\u63d2\u5165\u6216\u66f4\u65b0\u8bb0\u5f55\u3002 2. \u4e4b\u540e\u89e6\u53d1\u5668 (AFTER) \u5728\u4e8b\u4ef6\u53d1\u751f\u4e4b\u540e\u6267\u884c\u3002 \u65e0\u6cd5\u963b\u6b62\u4e8b\u4ef6\uff0c\u4f46\u53ef\u4ee5\u5bf9\u5df2\u53d1\u751f\u7684\u53d8\u66f4\u8fdb\u884c\u5904\u7406\u3002 3. \u66ff\u6362\u89e6\u53d1\u5668 (INSTEAD OF) \u4ee5\u4e0d\u540c\u7684\u65b9\u5f0f\u53d6\u4ee3\u539f\u672c\u7684\u4e8b\u4ef6\u3002 \u4ec5\u9002\u7528\u4e8eINSERT\u3001UPDATE\u548cDELETE\u64cd\u4f5c\u3002 4. \u5b9a\u65f6\u89e6\u53d1\u5668 (SCHEDULE) \u5728\u7279\u5b9a\u65f6\u95f4\u6216\u95f4\u9694\u95f4\u9694\u540e\u6267\u884c\u3002 \u4e0d\u4f9d\u8d56\u4e8e\u8868\u4e2d\u7684\u4e8b\u4ef6\u3002 \u89e6\u53d1\u5668\u4e8b\u4ef6 \u89e6\u53d1\u5668\u53ef\u4ee5\u9488\u5bf9\u4ee5\u4e0b\u4e8b\u4ef6\u8fdb\u884c\u89e6\u53d1\uff1a INSERT UPDATE DELETE TRUNCATE \u89e6\u53d1\u5668\u64cd\u4f5c \u89e6\u53d1\u5668\u53ef\u4ee5\u6267\u884c\u5404\u79cd\u64cd\u4f5c\uff0c\u5305\u62ec\uff1a \u63d2\u5165\u6216\u66f4\u65b0\u5176\u4ed6\u8868\u4e2d\u7684\u8bb0\u5f55 \u53d1\u9001\u7535\u5b50\u90ae\u4ef6\u901a\u77e5 \u8bb0\u5f55\u4e8b\u4ef6\u65e5\u5fd7 \u6267\u884c\u590d\u6742\u7684\u4e1a\u52a1\u903b\u8f91 \u9009\u62e9\u5408\u9002\u7684\u89e6\u53d1\u5668\u7c7b\u578b \u9009\u62e9\u5408\u9002\u7684\u89e6\u53d1\u5668\u7c7b\u578b\u53d6\u51b3\u4e8e\u89e6\u53d1\u5668\u7684\u9884\u671f\u884c\u4e3a\u548c\u9700\u8981\u5b8c\u6210\u7684\u64cd\u4f5c\u3002 \u963b\u6b62\u4e8b\u4ef6\uff1aBEFORE\u89e6\u53d1\u5668 \u5904\u7406\u53d8\u66f4\uff1aAFTER\u89e6\u53d1\u5668 \u4ee5\u4e0d\u540c\u65b9\u5f0f\u66ff\u6362\u4e8b\u4ef6\uff1aINSTEAD OF\u89e6\u53d1\u5668 \u5728\u7279\u5b9a\u65f6\u95f4\u95f4\u9694\u540e\u6267\u884c\uff1aSCHEDULE\u89e6\u53d1\u5668 \u4ee5\u4e0a\u5c31\u662f\u89e6\u53d1\u5668\u6709\u54ea\u4e9b\u7c7b\u578b\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-6321","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6321","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=6321"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6321\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=6321"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=6321"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=6321"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}