mysql中TIMESTAMPDIFF函數(shù)怎么用

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TIMESTAMPDIFF

TIMERSTAMPDIFF語法:

TIMERSTAMPDIFF(interval,datetime_expr1,datetime_expr2)

說明:

該函數(shù)是返回datetime_expr1和datetime_expr2之間的整數(shù)差,其中單位有interval參數(shù)決定,interval的常用參數(shù)有:

FRAC_SECOND 時(shí)間間隔是毫秒

SECOND 時(shí)間間隔是秒

MINUTE 時(shí)間間隔是分鐘

HOUR 時(shí)間間隔是小時(shí)

DAY 時(shí)間間隔是天

WEEK 時(shí)間間隔是周

MOUTH 時(shí)間間隔是月

QUARTER 時(shí)間間隔是季度

YEAR 時(shí)間間隔是年

示例:

MariaDB [(none)]> select timestampdiff(hour,'2018-06-05 09:00:00','2018-06-15 09:00:00');

+-----------------------------------------------------------------+

| timestampdiff(hour,'2018-06-05 09:00:00','2018-06-15 09:00:00') |

+-----------------------------------------------------------------+

| 240 |

+-----------------------------------------------------------------+

1 row in set (0.00 sec)

示例二:

MariaDB [(none)]> select timestampdiff(day,'2018-06-05 09:00:00','2018-06-15 09:00:00');

+----------------------------------------------------------------+

| timestampdiff(day,'2018-06-05 09:00:00','2018-06-15 09:00:00') |

+----------------------------------------------------------------+

| 10 |

+----------------------------------------------------------------+

1 row in set (0.00 sec)

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