{"id":66445,"date":"2024-10-14T17:35:18","date_gmt":"2024-10-14T09:35:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/66445\/"},"modified":"2024-10-14T17:35:18","modified_gmt":"2024-10-14T09:35:18","slug":"mysol%e4%b8%adevent%e7%94%a8%e6%b3%95%e8%a9%b3%e8%a7%a3%ef%bc%8c%e9%9b%b6%e5%9f%ba%e7%a4%8e%e5%bf%ab%e9%80%9f%e5%85%a5%e9%96%80%e5%bf%85%e7%9c%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/66445\/","title":{"rendered":"MySOL\u4e2dEvent\u7528\u6cd5\u8a73\u89e3\uff0c\u96f6\u57fa\u790e\u5feb\u901f\u5165\u9580\u5fc5\u770b"},"content":{"rendered":"<h1 id=\"mysql%e4%b8%adevent%e7%94%a8%e6%b3%95%e8%a9%b3%e8%a7%a3%ef%bc%8c%e9%9b%b6%e5%9f%ba%e7%a4%8e%e5%bf%ab%e9%80%9f%e5%85%a5%e9%96%80%e5%bf%85%e7%9c%8b-ueCLZDcEQn\">MySQL\u4e2dEvent\u7528\u6cd5\u8a73\u89e3\uff0c\u96f6\u57fa\u790e\u5feb\u901f\u5165\u9580\u5fc5\u770b<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0cMySQL\u662f\u4e00\u500b\u975e\u5e38\u6d41\u884c\u7684\u9078\u64c7\uff0c\u5c24\u5176\u662f\u5728\u9700\u8981\u5b9a\u671f\u57f7\u884c\u4efb\u52d9\u7684\u60c5\u6cc1\u4e0b\u3002MySQL\u7684Event\u529f\u80fd\u5141\u8a31\u7528\u6236\u81ea\u52d5\u57f7\u884c\u7279\u5b9a\u7684SQL\u8a9e\u53e5\uff0c\u9019\u5c0d\u65bc\u6578\u64da\u7dad\u8b77\u3001\u5831\u544a\u751f\u6210\u7b49\u4efb\u52d9\u975e\u5e38\u6709\u7528\u3002\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39MySQL\u4e2dEvent\u7684\u7528\u6cd5\uff0c\u5e6b\u52a9\u96f6\u57fa\u790e\u7684\u7528\u6236\u5feb\u901f\u5165\u9580\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afmysql-event%ef%bc%9f-ueCLZDcEQn\">\u4ec0\u9ebc\u662fMySQL Event\uff1f<\/h2>\n<p>MySQL Event\u662f\u4e00\u7a2e\u5b9a\u6642\u4efb\u52d9\uff0c\u5141\u8a31\u7528\u6236\u5728\u6307\u5b9a\u7684\u6642\u9593\u6216\u6642\u9593\u9593\u9694\u5167\u81ea\u52d5\u57f7\u884cSQL\u8a9e\u53e5\u3002\u9019\u985e\u4f3c\u65bc\u5176\u4ed6\u6578\u64da\u5eab\u7cfb\u7d71\u4e2d\u7684\u8a08\u5283\u4efb\u52d9\uff08Scheduled Tasks\uff09\u6216\u4f5c\u696d\uff08Jobs\uff09\u3002\u4f7f\u7528Event\u53ef\u4ee5\u6e1b\u5c11\u624b\u52d5\u64cd\u4f5c\uff0c\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u81ea\u52d5\u5316\u7a0b\u5ea6\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%95%9f%e7%94%a8event-scheduler-ueCLZDcEQn\">\u5982\u4f55\u555f\u7528Event Scheduler<\/h2>\n<p>\u5728\u4f7f\u7528Event\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u78ba\u4fddEvent Scheduler\u5df2\u7d93\u555f\u7528\u3002\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0bSQL\u8a9e\u53e5\u6aa2\u67e5\u5176\u72c0\u614b\uff1a<\/p>\n<pre><code>SHOW VARIABLES LIKE 'event_scheduler';<\/code><\/pre>\n<p>\u5982\u679c\u8fd4\u56de\u7684\u503c\u70baOFF\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u555f\u7528\u5b83\uff1a<\/p>\n<pre><code>SET GLOBAL event_scheduler = ON;<\/code><\/pre>\n<h2 id=\"%e5%89%b5%e5%bb%ba%e4%b8%80%e5%80%8b%e7%b0%a1%e5%96%ae%e7%9a%84event-ueCLZDcEQn\">\u5275\u5efa\u4e00\u500b\u7c21\u55ae\u7684Event<\/h2>\n<p>\u5275\u5efaEvent\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE EVENT event_name\nON SCHEDULE schedule\nDO sql_statement;<\/code><\/pre>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u5177\u9ad4\u7684\u4f8b\u5b50\uff0c\u8a72Event\u6bcf\u5929\u5348\u591c\u81ea\u52d5\u57f7\u884c\u4e00\u500b\u6e05\u7406\u64cd\u4f5c\uff1a<\/p>\n<pre><code>CREATE EVENT daily_cleanup\nON SCHEDULE EVERY 1 DAY\nSTARTS '2023-10-01 00:00:00'\nDO\nDELETE FROM logs WHERE log_date &lt; NOW() - INTERVAL 30 DAY;<\/code><\/pre>\n<h2 id=\"event%e7%9a%84%e8%aa%bf%e5%ba%a6%e9%81%b8%e9%a0%85-ueCLZDcEQn\">Event\u7684\u8abf\u5ea6\u9078\u9805<\/h2>\n<p>\u5728\u5275\u5efaEvent\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u7a2e\u8abf\u5ea6\u9078\u9805\uff1a<\/p>\n<ul>\n<li><strong>EVERY<\/strong>: \u6307\u5b9a\u6642\u9593\u9593\u9694\uff0c\u4f8b\u5982\u6bcf\u5c0f\u6642\u3001\u6bcf\u5929\u7b49\u3002<\/li>\n<li><strong>AT<\/strong>: \u6307\u5b9a\u5177\u9ad4\u7684\u57f7\u884c\u6642\u9593\u3002<\/li>\n<li><strong>INTERVAL<\/strong>: \u7528\u65bc\u5b9a\u7fa9\u6642\u9593\u9593\u9694\u7684\u9577\u5ea6\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%9f%a5%e7%9c%8b%e5%92%8c%e7%ae%a1%e7%90%86events-ueCLZDcEQn\">\u67e5\u770b\u548c\u7ba1\u7406Events<\/h2>\n<p>\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u67e5\u770b\u7576\u524d\u6578\u64da\u5eab\u4e2d\u7684\u6240\u6709Events\uff1a<\/p>\n<pre><code>SHOW EVENTS;<\/code><\/pre>\n<p>\u5982\u679c\u9700\u8981\u522a\u9664\u4e00\u500bEvent\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>DROP EVENT event_name;<\/code><\/pre>\n<h2 id=\"event%e7%9a%84%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-ueCLZDcEQn\">Event\u7684\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528MySQL Event\u6642\uff0c\u6709\u5e7e\u9ede\u9700\u8981\u6ce8\u610f\uff1a<\/p>\n<ul>\n<li>Event\u7684\u57f7\u884c\u662f\u57fa\u65bc\u6578\u64da\u5eab\u7684\u6642\u9593\u8a2d\u5b9a\uff0c\u56e0\u6b64\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u6642\u5340\u8a2d\u7f6e\u6b63\u78ba\u3002<\/li>\n<li>Event\u7684\u57f7\u884c\u4e0d\u6703\u5f71\u97ff\u5176\u4ed6\u7528\u6236\u7684\u64cd\u4f5c\uff0c\u4f46\u9700\u8981\u8003\u616e\u5230\u8cc7\u6e90\u7684\u4f7f\u7528\u60c5\u6cc1\u3002<\/li>\n<li>\u5b9a\u671f\u6aa2\u67e5\u548c\u7dad\u8b77Event\uff0c\u4ee5\u78ba\u4fdd\u5176\u6b63\u5e38\u904b\u884c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-ueCLZDcEQn\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u4e2d\u7684Event\u529f\u80fd\u70ba\u7528\u6236\u63d0\u4f9b\u4e86\u4e00\u7a2e\u81ea\u52d5\u5316\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u6709\u6548\u65b9\u5f0f\u3002\u901a\u904e\u7c21\u55ae\u7684SQL\u8a9e\u53e5\uff0c\u60a8\u53ef\u4ee5\u8a2d\u7f6e\u5b9a\u6642\u4efb\u52d9\uff0c\u5f9e\u800c\u63d0\u9ad8\u5de5\u4f5c\u6548\u7387\u3002\u7121\u8ad6\u662f\u6578\u64da\u6e05\u7406\u3001\u5831\u544a\u751f\u6210\u9084\u662f\u5176\u4ed6\u5b9a\u671f\u4efb\u52d9\uff0cEvent\u90fd\u80fd\u5e6b\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bcVPS\u3001<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216\u5176\u4ed6\u4f3a\u670d\u5668\u89e3\u6c7a\u65b9\u6848\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3MySOL\u4e2dEvent\u7684\u7528\u6cd5\uff0c\u5f9e\u96f6\u57fa\u790e\u5feb\u901f\u5165\u9580\uff0c\u638c\u63e1\u95dc\u9375\u6280\u5de7\uff0c\u63d0\u5347\u4f60\u7684\u958b\u767c\u6548\u7387\uff0c\u5fc5\u770b\u6307\u5357\uff01<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-66445","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66445","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=66445"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66445\/revisions"}],"predecessor-version":[{"id":66446,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66445\/revisions\/66446"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=66445"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=66445"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=66445"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}