{"id":752,"date":"2014-01-27T11:23:58","date_gmt":"2014-01-27T03:23:58","guid":{"rendered":"http:\/\/coderbee.net\/?p=752"},"modified":"2018-04-15T22:19:05","modified_gmt":"2018-04-15T14:19:05","slug":"mysql-%e4%ba%8b%e4%bb%b6%e8%b0%83%e5%ba%a6%e5%99%a8-%e5%ae%9a%e6%97%b6%e8%b0%83%e5%ba%a6","status":"publish","type":"post","link":"https:\/\/coderbee.net\/index.php\/db\/20140127\/752","title":{"rendered":"MySQL \u4e8b\u4ef6\u8c03\u5ea6\u5668 \u5b9a\u65f6\u8c03\u5ea6"},"content":{"rendered":"

MySQL 5.1 \u5f15\u5165\u7684\u65f6\u95f4\u8c03\u5ea6\u5668\u53ef\u4ee5\u4f5c\u4e3a\u5b9a\u65f6\u4efb\u52a1\u8c03\u5ea6\u5668\uff0c\u53d6\u4ee3\u7cfb\u7edf\u7684cron\u8c03\u5ea6\uff0c\u8c03\u5ea6\u65f6\u95f4\u53ef\u4ee5\u7cbe\u786e\u5230\u79d2\uff0c\u5b9e\u65f6\u6027\u597d\u3002<\/p>\n

\u5f00\u542f\u4e8b\u4ef6\u8c03\u5ea6\u5668<\/h3>\n

\u9996\u5148\u67e5\u770b\u662f\u5426\u5f00\u542f\u4e86\u4e8b\u4ef6\u8c03\u5ea6\u5668\uff1a show variables like \"event_scheduler\";<\/code> \u6216 SELECT @@event_scheduler;<\/code>\u3002<\/p>\n

\u5f00\u542f\u4e8b\u4ef6\u8c03\u5ea6\u5668\uff1a SET GLOBAL event_scheduler = ON;<\/code>\uff0c\u8fd9\u4e2a\u547d\u4ee4\u9700\u8981\u5177\u6709 SUPER \u6743\u9650\u624d\u80fd\u6267\u884c\uff0c\u53ef\u4ee5\u7528 root \u7528\u6237\u6765\u6267\u884c\uff0c\u8bf4\u660e\u662f\u4f5c\u7528\u5728\u6574\u4e2a\u6570\u636e\u5e93\u670d\u52a1\u4e0a\u7684\uff0c\u800c\u4e0d\u5355\u662f\u67d0\u4e2a\u6570\u636e\u5e93\u5b9e\u4f8b\u3002<\/p>\n

MySQL\u670d\u52a1\u5668\u9ed8\u8ba4\u662f\u6ca1\u6709\u5f00\u542f\u4e8b\u4ef6\u8c03\u5ea6\u5668\u7684\uff0c\u8fd9\u6837\u4e0a\u8ff0\u901a\u8fc7\u547d\u4ee4\u5f00\u542f\u7684\u5728MySQL\u670d\u52a1\u5668\u91cd\u542f\u540e\u4f1a\u5931\u6548\uff0c\u53ef\u4ee5\u5728\u914d\u7f6e\u6587\u4ef6\u91cc\u9ed8\u8ba4\u5f00\u542f\uff0c\u5728 [mysqld] \u4e0b\u6dfb\u52a0\u914d\u7f6e\uff1a event_scheduler=ON \u9ed8\u8ba4\u5f00\u542f\u3002<\/p>\n

\u67e5\u770b\u4e8b\u4ef6\u7684\u6267\u884c\u60c5\u51b5<\/h3>\n

SELECT * FROM information_schema.EVENTS;<\/code><\/p>\n

<\/p>\n

\u521b\u5efa\u4e8b\u4ef6<\/h3>\n

\u8bed\u6cd5\uff1a<\/p>\n

CREATE  EVENT  [IF  NOT EXISTS]  event_name\r\n     ON  SCHEDULE  schedule\r\n     [ON  COMPLETION  [NOT]  PRESERVE]\r\n     -- \u6267\u884c\u5b8c\u540e\u662f\u5426\u4fdd\u7559\u4e8b\u4ef6\uff0c\u9ed8\u8ba4\u4e3aNOT PRESERVE\uff0c\u4e5f\u5c31\u662f\u975e\u5468\u671f\u6027\u4efb\u52a1\u6267\u884c\u5b8c\u540e\u5220\u9664\u3002\r\n     [ENABLE  |  DISABLE]                 -- \u5f00\u542f\u6216\u5173\u95ed\u4e8b\u4ef6\r\n     [COMMENT  'comment']                 --  \u4e8b\u4ef6\u8bf4\u660e\r\n     DO   sql_statement;                  --  \u8981\u6267\u884c\u7684 sql \u8bed\u53e5\r\n\r\nschedule\uff1a\r\n     AT  TIMESTAMP  [+INTERVAL  INTERVAL_VAL]\r\n--  AT  \u7528\u4e8e\u5728\u6307\u5b9a\u65f6\u95f4\u70b9\u6267\u884c\u4e00\u6b21\u3002\r\n\r\n     EVERY  INTERVAL  [STARTS  TIMESTAMP]  [END  TIMESTAMP]\r\n--  EVERY  \u7528\u4e8e\u6bcf\u9694\u6307\u5b9a\u7684\u65f6\u95f4\u91cd\u590d\u6267\u884c\u3002\r\n--  \u5982\u679c\u6ca1\u6709\u6307\u5b9a\u5f00\u59cb\u65f6\u95f4\u548c\u7ed3\u675f\u65f6\u95f4\uff0c\u90a3\u4e48\u9ed8\u8ba4\u7684\u5f00\u59cb\u65f6\u95f4\u5c31\u662f\u5f53\u524d\u7ed3\u675f\u65f6\u95f4\uff0c\u6ca1\u6709\u7ed3\u675f\u65f6\u95f4\u3002\r\n\r\n\r\nINTERVAL_VAL\uff1a\r\nquantity {YEAR | QUARTER | MONTH | DAY | HOUR | MINUTE |\r\nWEEK | SECOND | YEAR_MONTH | DAY_HOUR | DAY_MINUTE |\r\nDAY_SECOND | HOUR_MINUTE | HOUR_SECOND | MINUTE_SECOND} \r\n\r\n--   quantity \u662f\u6570\u503c\uff0c\u82b1\u62ec\u53f7\u91cc\u7684\u662f\u7684\u65f6\u95f4\u5355\u4f4d\u3002\r\n<\/code><\/pre>\n
\u4fee\u6539\u4e8b\u4ef6<\/h3>\n
ALTER EVENT event_name\r\n     [ON SCHEDULE schedule]            --  \u8bbe\u5b9a\u8c03\u5ea6\u65f6\u95f4\r\n     [RENAME TO new_event_name]        --  \u91cd\u547d\u540d\u4e3a\u53e6\u4e00\u4e2a\u540d\u5b57\r\n     [ON COMPLETION [NOT] PRESERVE]    -- \u6267\u884c\u5b8c\u540e\u662f\u5426\u4fdd\u7559\u4e8b\u4ef6\uff0c\u9ed8\u8ba4\u4e0d\u4fdd\u7559\r\n     [COMMENT 'comment']               --  \u4e8b\u4ef6\u8bf4\u660e\r\n     [ENABLE | DISABLE]                -- \u5f00\u542f\u6216\u5173\u95ed\u4e8b\u4ef6\r\n     [DO sql_statement]                --  \u8981\u6267\u884c\u7684 sql \u8bed\u53e5\r\n<\/code><\/pre>\n
\u5220\u9664\u4e8b\u4ef6<\/h3>\n
DROP   EVENT  eventName;\r\n\r\nDROP   EVENT  IF  EXISTS  eventName;\r\n<\/code><\/pre>\n
\u4ee3\u7801\u793a\u4f8b<\/h4>\n
--  \u521b\u5efa\u4e00\u4e2a\u6d4b\u8bd5\u8868\r\nCREATE  TABLE aaa  (timeline  TIMESTAMP)\r\n\r\n\r\n--  \u6bcf\u9694\u4e00\u79d2\u949f\u63d2\u5165\u4e00\u6761\u8bb0\u5f55\uff0c\u8fd9\u91cc\u6ca1\u6709\u6307\u5b9a\u65f6\u95f4\u8303\u56f4\uff0c\u5c31\u4ece\u5f53\u524d\u65f6\u95f4\u5f00\u59cb\u4e00\u76f4\u91cd\u590d\u8c03\u5ea6\u3002\r\nCREATE  EVENT  e_test\r\n     ON  SCHEDULE  EVERY  1  SECOND\r\n     DO  INSERT  INTO  aaa  VALUES(CURRENT_TIMESTAMP);\r\n\r\n--   \u521b\u5efa\u4e8b\u4ef6\u4f46\u4e0d\u8c03\u5ea6\u6267\u884c\r\nCREATE  EVENT  e_test\r\n     ON  SCHEDULE  EVERY  1  SECOND\r\n     DISABLE\r\n     COMMENT  'not enabled, just for later use .'\r\n     DO  INSERT  INTO  aaa  VALUES(CURRENT_TIMESTAMP);\r\n\r\n\r\n--   \u4fee\u6539\u4e8b\u4ef6\u7684\u8c03\u5ea6\u95f4\u9694\uff0c\u5e76\u4f7f\u80fd\u88ab\u8c03\u5ea6\u3002\r\nALTER  EVENT  e_test\r\n     ON  SCHEDULE  EVERY  10  SECOND\r\n     ENABLE;\r\n\r\n\r\n--   \u5728\u6307\u5b9a\u65f6\u95f4\u70b9\u6267\u884c\u4e00\u6b21\r\nCREATE  EVENT  e_test\r\n     ON  SCHEDULE  AT  TIMESTAMP  '2014-01-27 23:59:50'\r\n     DO  TRUNCATE  TABLE  aaa;\r\n\r\n\r\n--   \u5728\u6307\u5b9a\u65f6\u95f4\u70b9\u6267\u884c\u4e00\u6b21\uff0c\u6267\u884c\u5b8c\u540e\u4fdd\u7559\u4e8b\u4ef6\u3002\r\nCREATE  EVENT  e_test\r\n     ON  SCHEDULE  AT  TIMESTAMP  '2014-01-27 23:59:50'\r\n     ON  COMPLETION   PRESERVE\r\n     DO  TRUNCATE  TABLE  aaa;\r\n\r\n\r\n--  \u4ece\u67d0\u4e2a\u65f6\u95f4\u8303\u56f4\u5185\u5468\u671f\u6027\u5730\u6267\u884c\u4efb\u52a1\r\nCREATE  EVENT  e_test\r\n     ON  SCHEDULE  EVERY  1  DAY\r\n     STARTS  TIMESTAMP  '2014-01-27 23:59:50'\r\n     ENDS  TIMESTAMP  '2014-02-27 23:59:50'\r\n     DO  TRUNCATE  TABLE  aaa;\r\n\r\n\r\n--   \u5220\u9664\u4e8b\u4ef6\r\nDROP   EVENT  e_test;\r\n\r\n\r\n--   \u5982\u679c\u5b58\u5728\uff0c\u5220\u9664\u4e8b\u4ef6\u3002\r\nDROP   EVENT  IF  EXISTS  e_test;\r\n<\/code><\/pre>\n\n
\u6b22\u8fce\u5173\u6ce8\u6211\u7684\u5fae\u4fe1\u516c\u4f17\u53f7: coderbee\u7b14\u8bb0<\/strong>\uff0c\u53ef\u4ee5\u66f4\u53ca\u65f6\u56de\u590d\u4f60\u7684\u8ba8\u8bba\u3002<\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
MySQL 5.1 \u5f15\u5165\u7684\u65f6\u95f4\u8c03\u5ea6\u5668\u53ef\u4ee5\u4f5c\u4e3a\u5b9a\u65f6\u4efb\u52a1\u8c03\u5ea6\u5668\uff0c\u53d6\u4ee3\u7cfb\u7edf\u7684cron\u8c03 … \u7ee7\u7eed\u9605\u8bfb →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[149,151,152],"_links":{"self":[{"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/posts\/752"}],"collection":[{"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/comments?post=752"}],"version-history":[{"count":8,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/posts\/752\/revisions"}],"predecessor-version":[{"id":1631,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/posts\/752\/revisions\/1631"}],"wp:attachment":[{"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/media?parent=752"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/categories?post=752"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/tags?post=752"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}