SQL 手册SQL 函数字符串函数SLEEP本页总览SLEEPsleepdescriptionSyntaxBOOLEAN sleep(INT num)使该线程休眠num秒。examplemysql> select sleep(10);+-----------+| sleep(10) |+-----------+| 1 |+-----------+1 row in set (10.01 sec)keywordssleep