{"id":5795,"date":"2024-11-14T09:33:15","date_gmt":"2024-11-14T01:33:15","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5795\/"},"modified":"2024-11-14T09:33:15","modified_gmt":"2024-11-14T01:33:15","slug":"mysql%e7%9a%84%e8%a7%a6%e5%8f%91%e5%99%a8%e6%80%8e%e4%b9%88%e7%94%a8","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5795\/","title":{"rendered":"mysql\u7684\u89e6\u53d1\u5668\u600e\u4e48\u7528"},"content":{"rendered":"<blockquote><p>\n  \u89e6\u53d1\u5668\u662f mysql \u4e2d\u7528\u4e8e\u5728\u7279\u5b9a\u7684\u6570\u636e\u4fee\u6539\u4e8b\u4ef6\uff08\u63d2\u5165\u3001\u66f4\u65b0\u3001\u5220\u9664\uff09\u53d1\u751f\u65f6\u81ea\u52a8\u6267\u884c\u6307\u5b9a\u64cd\u4f5c\u7684\u6570\u636e\u5e93\u5bf9\u8c61\u3002\u89e6\u53d1\u5668\u7684\u7528\u9014\u5305\u62ec\uff1a\u6570\u636e\u5b8c\u6574\u6027\uff1a\u786e\u4fdd\u6570\u636e\u7684\u51c6\u786e\u6027\u548c\u4e00\u81f4\u6027\u3002\u4e1a\u52a1\u89c4\u5219\uff1a\u5b9e\u65bd\u4e1a\u52a1\u903b\u8f91\uff0c\u5982\u8ba1\u7b97\u6d3e\u751f\u5217\u6216\u521b\u5efa\u5173\u8054\u6570\u636e\u3002\u6570\u636e\u5ba1\u8ba1\uff1a\u8bb0\u5f55\u8868\u4e2d\u6570\u636e\u7684\u66f4\u6539\uff0c\u4ee5\u4fbf\u5ba1\u8ba1\u548c\u8ddf\u8e2a\u3002\u81ea\u52a8\u5316\u4efb\u52a1\uff1a\u81ea\u52a8\u5316\u91cd\u590d\u6027\u64cd\u4f5c\uff0c\u5982\u53d1\u9001\u901a\u77e5\u6216\u66f4\u65b0\u7f13\u5b58\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202406\/02\/2024060201542692767.jpg\" class=\"aligncenter\" title=\"mysql\u7684\u89e6\u53d1\u5668\u600e\u4e48\u7528\u63d2\u56fe\" alt=\"mysql\u7684\u89e6\u53d1\u5668\u600e\u4e48\u7528\u63d2\u56fe\" \/><\/p>\n<p><strong>MySQL \u89e6\u53d1\u5668\u7684\u7528\u9014<\/strong><\/p>\n<p><strong>\u7b80\u4ecb<\/strong><br \/>\u89e6\u53d1\u5668\u662f MySQL \u4e2d\u4e00\u79cd\u6570\u636e\u5e93\u5bf9\u8c61\uff0c\u7528\u4e8e\u5728\u7279\u5b9a\u7684\u4e8b\u4ef6\u53d1\u751f\u65f6\u81ea\u52a8\u6267\u884c\u6307\u5b9a\u7684\u64cd\u4f5c\u3002\u4e8b\u4ef6\u53ef\u80fd\u662f\u8868\u4e2d\u7684\u6570\u636e\u88ab\u63d2\u5165\u3001\u66f4\u65b0\u6216\u5220\u9664\u3002<\/p>\n<p><strong>\u4f7f\u7528\u89e6\u53d1\u5668\u7684\u597d\u5904<\/strong><\/p>\n<ul>\n<li> <strong>\u6570\u636e\u5b8c\u6574\u6027\uff1a<\/strong>\u89e6\u53d1\u5668\u53ef\u7528\u4e8e\u6267\u884c\u6570\u636e\u9a8c\u8bc1\uff0c\u786e\u4fdd\u6570\u636e\u7684\u51c6\u786e\u6027\u548c\u4e00\u81f4\u6027\u3002<\/li>\n<li> <strong>\u4e1a\u52a1\u89c4\u5219\uff1a<\/strong>\u89e6\u53d1\u5668\u53ef\u7528\u4e8e\u5b9e\u65bd\u4e1a\u52a1\u903b\u8f91\uff0c\u4f8b\u5982\u8ba1\u7b97\u6d3e\u751f\u5217\u6216\u81ea\u52a8\u521b\u5efa\u5173\u8054\u6570\u636e\u3002<\/li>\n<li> <strong>\u6570\u636e\u5ba1\u8ba1\uff1a<\/strong>\u89e6\u53d1\u5668\u53ef\u7528\u4e8e\u8bb0\u5f55\u5bf9\u8868\u6240\u505a\u7684\u66f4\u6539\uff0c\u4ee5\u4fbf\u8fdb\u884c\u5ba1\u8ba1\u548c\u8ddf\u8e2a\u3002<\/li>\n<li> <strong>\u81ea\u52a8\u5316\u4efb\u52a1\uff1a<\/strong>\u89e6\u53d1\u5668\u53ef\u7528\u4e8e\u81ea\u52a8\u5316\u91cd\u590d\u6027\u4efb\u52a1\uff0c\u4f8b\u5982\u5728\u63d2\u5165\u65b0\u884c\u65f6\u53d1\u9001\u901a\u77e5\u6216\u66f4\u65b0\u7f13\u5b58\u3002<\/li>\n<\/ul>\n<p><strong>\u89e6\u53d1\u5668\u7684\u7c7b\u578b<\/strong><\/p>\n<ul>\n<li> <strong>BEFORE \u89e6\u53d1\u5668\uff1a<\/strong>\u5728\u4e8b\u4ef6\u53d1\u751f\u4e4b\u524d\u6267\u884c\u3002<\/li>\n<li> <strong>AFTER \u89e6\u53d1\u5668\uff1a<\/strong>\u5728\u4e8b\u4ef6\u53d1\u751f\u4e4b\u540e\u6267\u884c\u3002<\/li>\n<li> <strong>INSTEAD OF \u89e6\u53d1\u5668\uff1a<\/strong>\u4ee3\u66ff\u4e8b\u4ef6\u6267\u884c\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<p><strong>\u521b\u5efa\u89e6\u53d1\u5668<\/strong><br \/>\u4f7f\u7528 CREATE TRIGGER \u8bed\u53e5\u521b\u5efa\u89e6\u53d1\u5668\u3002\u8be5\u8bed\u53e5\u9700\u8981\u6307\u5b9a\u89e6\u53d1\u5668\u7684\u4ee5\u4e0b\u4fe1\u606f\uff1a<\/p>\n<ul>\n<li>\u540d\u79f0<\/li>\n<li>\u4e8b\u4ef6\uff08INSERT\u3001UPDATE\u3001DELETE\uff09<\/li>\n<li>\u8868<\/li>\n<li>\u6267\u884c\u7684\u64cd\u4f5c\uff08SQL \u8bed\u53e5\uff09<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b<\/strong><br \/>\u4ee5\u4e0b\u89e6\u53d1\u5668\u5728\u5411\u8868 &#8220;customers&#8221; \u4e2d\u63d2\u5165\u65b0\u884c\u65f6\u5411\u53e6\u4e00\u4e2a\u8868 &#8220;sales&#8221; \u4e2d\u63d2\u5165\u4e00\u6761\u9500\u552e\u8bb0\u5f55\uff1a<\/p>\n<pre>CREATE TRIGGER insert_sale\nAFTER INSERT ON customers\nFOR EACH ROW\nINSERT INTO sales (customer_id, product_id, quantity)\nVALUES (NEW.customer_id, NEW.product_id, NEW.quantity);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n<ul>\n<li>\u89e6\u53d1\u5668\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6027\u80fd\u95ee\u9898\uff0c\u56e0\u4e3a\u5b83\u4eec\u4f1a\u589e\u52a0\u6570\u636e\u5e93\u64cd\u4f5c\u7684\u590d\u6742\u6027\u3002<\/li>\n<li>\u5728\u89e6\u53d1\u5668\u4e2d\u6267\u884c\u7684\u8bed\u53e5\u5fc5\u987b\u662f\u786e\u5b9a\u6027\u7684\uff0c\u5373\u5b83\u4eec\u4e0d\u80fd\u4ea7\u751f\u968f\u673a\u7ed3\u679c\u6216\u4fee\u6539\u6570\u636e\u3002<\/li>\n<li>\u907f\u514d\u5728\u89e6\u53d1\u5668\u4e2d\u4f7f\u7528\u9012\u5f52\u8c03\u7528\uff0c\u56e0\u4e3a\u5b83\u53ef\u80fd\u4f1a\u5bfc\u81f4\u65e0\u9650\u5faa\u73af\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662f\u7684\u89e6\u53d1\u5668\u600e\u4e48\u7528\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>\u89e6\u53d1\u5668\u662f mysql \u4e2d\u7528\u4e8e\u5728\u7279\u5b9a\u7684\u6570\u636e\u4fee\u6539\u4e8b\u4ef6\uff08\u63d2\u5165\u3001\u66f4\u65b0\u3001\u5220\u9664\uff09\u53d1\u751f\u65f6\u81ea\u52a8\u6267\u884c\u6307\u5b9a\u64cd\u4f5c\u7684\u6570\u636e\u5e93\u5bf9\u8c61\u3002\u89e6\u53d1\u5668\u7684\u7528\u9014\u5305\u62ec\uff1a\u6570\u636e\u5b8c\u6574\u6027\uff1a\u786e\u4fdd\u6570\u636e\u7684\u51c6\u786e\u6027\u548c\u4e00\u81f4\u6027\u3002\u4e1a\u52a1\u89c4\u5219\uff1a\u5b9e\u65bd\u4e1a\u52a1\u903b\u8f91\uff0c\u5982\u8ba1\u7b97\u6d3e\u751f\u5217\u6216\u521b\u5efa\u5173\u8054\u6570\u636e\u3002\u6570\u636e\u5ba1\u8ba1\uff1a\u8bb0\u5f55\u8868\u4e2d\u6570\u636e\u7684\u66f4\u6539\uff0c\u4ee5\u4fbf\u5ba1\u8ba1\u548c\u8ddf\u8e2a\u3002\u81ea\u52a8\u5316\u4efb\u52a1\uff1a\u81ea\u52a8\u5316\u91cd\u590d\u6027\u64cd\u4f5c\uff0c\u5982\u53d1\u9001\u901a\u77e5\u6216\u66f4\u65b0\u7f13\u5b58\u3002 MySQL \u89e6\u53d1\u5668\u7684\u7528\u9014 \u7b80\u4ecb\u89e6\u53d1\u5668\u662f MySQL \u4e2d\u4e00\u79cd\u6570\u636e\u5e93\u5bf9\u8c61\uff0c\u7528\u4e8e\u5728\u7279\u5b9a\u7684\u4e8b\u4ef6\u53d1\u751f\u65f6\u81ea\u52a8\u6267\u884c\u6307\u5b9a\u7684\u64cd\u4f5c\u3002\u4e8b\u4ef6\u53ef\u80fd\u662f\u8868\u4e2d\u7684\u6570\u636e\u88ab\u63d2\u5165\u3001\u66f4\u65b0\u6216\u5220\u9664\u3002 \u4f7f\u7528\u89e6\u53d1\u5668\u7684\u597d\u5904 \u6570\u636e\u5b8c\u6574\u6027\uff1a\u89e6\u53d1\u5668\u53ef\u7528\u4e8e\u6267\u884c\u6570\u636e\u9a8c\u8bc1\uff0c\u786e\u4fdd\u6570\u636e\u7684\u51c6\u786e\u6027\u548c\u4e00\u81f4\u6027\u3002 \u4e1a\u52a1\u89c4\u5219\uff1a\u89e6\u53d1\u5668\u53ef\u7528\u4e8e\u5b9e\u65bd\u4e1a\u52a1\u903b\u8f91\uff0c\u4f8b\u5982\u8ba1\u7b97\u6d3e\u751f\u5217\u6216\u81ea\u52a8\u521b\u5efa\u5173\u8054\u6570\u636e\u3002 \u6570\u636e\u5ba1\u8ba1\uff1a\u89e6\u53d1\u5668\u53ef\u7528\u4e8e\u8bb0\u5f55\u5bf9\u8868\u6240\u505a\u7684\u66f4\u6539\uff0c\u4ee5\u4fbf\u8fdb\u884c\u5ba1\u8ba1\u548c\u8ddf\u8e2a\u3002 \u81ea\u52a8\u5316\u4efb\u52a1\uff1a\u89e6\u53d1\u5668\u53ef\u7528\u4e8e\u81ea\u52a8\u5316\u91cd\u590d\u6027\u4efb\u52a1\uff0c\u4f8b\u5982\u5728\u63d2\u5165\u65b0\u884c\u65f6\u53d1\u9001\u901a\u77e5\u6216\u66f4\u65b0\u7f13\u5b58\u3002 \u89e6\u53d1\u5668\u7684\u7c7b\u578b BEFORE \u89e6\u53d1\u5668\uff1a\u5728\u4e8b\u4ef6\u53d1\u751f\u4e4b\u524d\u6267\u884c\u3002 AFTER \u89e6\u53d1\u5668\uff1a\u5728\u4e8b\u4ef6\u53d1\u751f\u4e4b\u540e\u6267\u884c\u3002 INSTEAD OF \u89e6\u53d1\u5668\uff1a\u4ee3\u66ff\u4e8b\u4ef6\u6267\u884c\u64cd\u4f5c\u3002 \u521b\u5efa\u89e6\u53d1\u5668\u4f7f\u7528 CREATE TRIGGER \u8bed\u53e5\u521b\u5efa\u89e6\u53d1\u5668\u3002\u8be5\u8bed\u53e5\u9700\u8981\u6307\u5b9a\u89e6\u53d1\u5668\u7684\u4ee5\u4e0b\u4fe1\u606f\uff1a \u540d\u79f0 \u4e8b\u4ef6\uff08INSERT\u3001UPDATE\u3001DELETE\uff09 \u8868 \u6267\u884c\u7684\u64cd\u4f5c\uff08SQL \u8bed\u53e5\uff09 \u793a\u4f8b\u4ee5\u4e0b\u89e6\u53d1\u5668\u5728\u5411\u8868 &#8220;customers&#8221; \u4e2d\u63d2\u5165\u65b0\u884c\u65f6\u5411\u53e6\u4e00\u4e2a\u8868 &#8220;sales&#8221; \u4e2d\u63d2\u5165\u4e00\u6761\u9500\u552e\u8bb0\u5f55\uff1a CREATE TRIGGER insert_sale AFTER INSERT ON customers FOR EACH ROW INSERT INTO sales (customer_id, product_id, quantity) VALUES (NEW.customer_id, NEW.product_id, NEW.quantity); [&hellip;]<\/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-5795","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5795","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=5795"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5795\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5795"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5795"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5795"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}