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MySQL中TIMESTAMPDIFF和TIMESTAMPADD函数的用法

 TIMESTAMPDIFF( day , ‘2012-08-24‘ , ‘2012-08-30‘ );   + ----------------------------------------------+     | TIMESTAMPDIFF( day , ‘2012-08-24‘ , ‘2012-08-30‘ ) |   + ----------------------------------------------+     |                                            6 |    + ----------------------------------------------+     1 row  in   set  (0.00 sec)     mysql>  select  TIMESTAMPDIFF( MINUTE , ‘2012-08-24 09:00:00‘ , ‘2012-08-30 12:00:00‘ );   + -------------------------------------------------------------------+     | TIMESTAMPDIFF( MINUTE , ‘2012-08-24 09:00:00‘ , ‘2012-08-30 12:00:00‘ ) |   + -------------------------------------------------------------------+     |                                                              8820 |    + -------------------------------------------------------------------+     1 row  in   set  (0.01 sec)   二,TIMESTAMPADD   语法: TIMESTAMPADD(interval,int_expr,datetime_expr)   说明: 将整型表达式int_expr 添加到日期或日期时间表达式 datetime_expr中。式中的interval和上文中列举的取值是一样的。 mysql>  select  TIMESTAMPADD( MINUTE ,8820, ‘2012-08-24 09:00:00‘ );   + -------------------------------------------------+     | TIMESTAMPADD( MINUTE ,8820, ‘2012-08-24 09:00:00‘ ) |   + -------------------------------------------------+     | 2012-08-30 12:00:00                             |    + -------------------------------------------------+     1 row  in   set  (0.00 sec)  

MySQL中TIMESTAMPDIFF和TIMESTAMPADD函数的用法

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