MySQL 查询如何将 timediff() 转换为秒?
为此,可以使用 TIME_TO_SEC() 函数。我们首先创建一个表 -
mysql> create table DemoTable -> ( -> SourceTime time, -> DestinationTime time -> ); Query OK, 0 rows affected (1.33 sec)
使用插入命令在表中插入一些记录 -
mysql> insert into DemoTable values('10:20:00','4:50:54'); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable values('12:05:10','7:45:12'); Query OK, 1 row affected (0.30 sec)
使用 select 语句显示表中的所有记录 -
mysql> select *from DemoTable;
输出
这将生成以下输出 -
+------------+-----------------+ | SourceTime | DestinationTime | +------------+-----------------+ | 10:20:00 | 04:50:54 | | 12:05:10 | 07:45:12 | +------------+-----------------+ 2 rows in set (0.00 sec)
以下是将时间差转换为秒的查询 -
mysql> SELECT ABS(TIME_TO_SEC(timediff(DestinationTime, SourceTime))) from DemoTable;
输出
这将生成以下输出 -
+---------------------------------------------------------+ | ABS(TIME_TO_SEC(timediff(DestinationTime, SourceTime))) | +---------------------------------------------------------+ | 19746 | | 15598 | +---------------------------------------------------------+ 2 rows in set (0.00 sec)
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