{"id":509,"date":"2024-09-07T23:17:49","date_gmt":"2024-09-07T15:17:49","guid":{"rendered":"https:\/\/forelink.top\/?p=509"},"modified":"2024-09-09T23:36:54","modified_gmt":"2024-09-09T15:36:54","slug":"%e8%a7%a6%e5%8f%91%e5%99%a8","status":"publish","type":"post","link":"https:\/\/forelink.top\/index.php\/2024\/09\/07\/%e8%a7%a6%e5%8f%91%e5%99%a8\/","title":{"rendered":"SQL\u89e6\u53d1\u5668"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\" id=\"\u7b80\u4ecb\uff1a\">\u7b80\u4ecb\uff1a<\/h2>\n\n\n\n<p>\u89e6\u53d1\u5668\u662f\u4e0e\u8868\u6709\u5173\u7684\u6570\u636e\u5e93\u5bf9\u8c61\uff0c\u5728 insert\/update\/delete \u4e4b\u524d\u6216\u8005\u4e4b\u540e\uff0c\u89e6\u53d1\u5e76\u6267\u884c\u89e6\u53d1\u5668\u4e2d\u5b9a\u4e49\u7684SQL\u8bed\u53e5\u96c6\u5408\u3002<\/p>\n\n\n\n<p>\u89e6\u53d1\u5668\u9002\u5408\u5728<strong>\u6570\u636e\u5e93\u7aef<\/strong>\u786e\u4fdd<strong>\u6570\u636e\u7684\u5b8c\u6574\u6027<\/strong>\uff0c<strong>\u65e5\u5fd7\u8bb0\u5f55<\/strong>\uff0c<strong>\u6570\u636e\u6821\u9a8c<\/strong>\n\u73b0\u5728\u7684\u89e6\u53d1\u5668\u8fd8\u53ea\u652f\u6301\u884c\u7ea7\u89e6\u53d1\uff0c\u4e0d\u652f\u6301\u8bed\u53e5\u89e6\u53d1\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u521b\u5efa\u67e5\u770b\u5220\u9664\uff1a\">\u521b\u5efa\u67e5\u770b\u5220\u9664\uff1a<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>-- \u521b\u5efa --\nCREATE TRIGGER &#91;trigger_name]\nBEFORE\/AFTER INSERT\/UPDATE\/DELETE\nON &#91;table_name] FOR EACH ROW -- \u6307\u5b9a\u8868\u5e76\u52a0\u5165\u89e6\u53d1\u5668\nBEGIN\n    ...\nEND;\n-- \u67e5\u770b --\nSHOW TRIGGERS;\n-- \u5220\u9664 \u4e0d\u6307\u5b9a\u6570\u636e\u5e93.\u540d\u79f0\uff0c\u9ed8\u8ba4\u5220\u9664\u5f53\u524d\u6570\u636e\u5e93\u4e0b\u7684 --\nDROP TRIGGER &#91;database_name.]trigger_name\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u793a\u4f8b\uff1a\u65e5\u5fd7\u8868\">\u793a\u4f8b\uff1a\u65e5\u5fd7\u8868<\/h2>\n\n\n\n<p>\u4e3ahso\u8868\u5efa\u7acb\u65e5\u5fd7\u8868hso_logs\uff0c\u5e76\u901a\u8fc7\u89e6\u53d1\u5668\u8bb0\u5f55\u8be5\u8868\u7684\u6570\u636e\u53d8\u66f4\u65e5\u5fd7\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>-- \u5efa\u8868\u8bed\u53e5 --\nCREATE TABLE hso_logs(\n    id int(11) not null auto_increment,\n    operation varchar(20) not null comment '\u64cd\u4f5c\u7c7b\u578b',\n    operate_time datetime not null comment '\u64cd\u4f5c\u65f6\u95f4',\n    operate_id int(11) not null comment '\u64cd\u4f5c\u7684id',\n    operate_params varchar(500) comment '\u64cd\u4f5c\u53c2\u6570',\n    primary key(id)\n)engine=innodb default charset=utf8;\n\n-- insert\u89e6\u53d1\u5668 --\ncreate trigger hso_insert_trigger\n    after insert on hso for each row\nbegin\n    insert into hso_logs(id,\n                         operation,\n                         operate_time,\n                         operate_id,\n                         operate_params) \n                       values(null,'insert',now(),new.id,concat(\n    '\u63d2\u5165\u7684\u6570\u636e\u5185\u5bb9\u4e3aid=',new.id,',var1=',new.var1\n    ))     \nend;\n\n\n-- update\u89e6\u53d1\u5668 --\ncreate trigger hso_insert_trigger\n    after update on hso for each row\nbegin\n    insert into hso_logs(id,\n                         operation,\n                         operate_time,\n                         operate_id,\n                         operate_params) \n                       values(null,'update',now(),new.id,concat(\n                           '\u66f4\u65b0\u4e4b\u524d\u7684\u6570\u636e\uff1aid=',old.id,',var1=',old.var1,\n    ' | \u66f4\u65b0\u7684\u6570\u636e\u5185\u5bb9\u4e3aid=',new.id,',var1=',new.var1\n    ))\nend;\n\n-- delete\u89e6\u53d1\u5668 --\ncreate trigger hso_insert_trigger\n    after delete on hso for each row\nbegin\n    insert into hso_logs(id,\n                         operation,\n                         operate_time,\n                         operate_id,\n                         operate_params) \n                       values(null,'delete',now(),old.id,concat(\n    '\u5220\u9664\u7684\u6570\u636e\u5185\u5bb9\u4e3aid=',new.id,',var1=',new.var1\n    ))\n    -- \u5220\u9664\u524d\u7684ID --\nend;\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u4ecb\uff1a \u89e6\u53d1\u5668\u662f\u4e0e\u8868\u6709\u5173\u7684\u6570\u636e\u5e93\u5bf9\u8c61\uff0c\u5728 insert\/update\/delete \u4e4b\u524d\u6216\u8005\u4e4b\u540e\uff0c\u89e6\u53d1\u5e76\u6267\u884c\u89e6 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[42,39],"tags":[],"class_list":["post-509","post","type-post","status-publish","format-standard","hentry","category-mysql","category-39"],"_links":{"self":[{"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/posts\/509","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/comments?post=509"}],"version-history":[{"count":4,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/posts\/509\/revisions"}],"predecessor-version":[{"id":521,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/posts\/509\/revisions\/521"}],"wp:attachment":[{"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/media?parent=509"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/categories?post=509"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/tags?post=509"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}