如何在MySQL中将varchar“时间”转换为实时？
为此，您可以使用TIME_FORMAT()。让我们首先创建一个表-
mysql> create table DemoTable1591 -> ( -> ArrivalTime varchar(20) -> );
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable1591 values('1620');
mysql> insert into DemoTable1591 values('2345');
mysql> insert into DemoTable1591 values('2210');使用select语句显示表中的所有记录-
mysql> select * from DemoTable1591;
这将产生以下输出-
+-------------+ | ArrivalTime | +-------------+ | 1620 | | 2345 | | 2210 | +-------------+ 3 rows in set (0.00 sec)
这是在MySQL中将varchar“时间”转换为实时的查询-
mysql> select TIME_FORMAT(CONCAT(SUBSTRING(ArrivalTime, 1,2), ':', SUBSTRING(ArrivalTime, 3,4)), '%h:%i') from DemoTable1591;
这将产生以下输出-
+---------------------------------------------------------------------------------------------+ | TIME_FORMAT(CONCAT(SUBSTRING(ArrivalTime, 1,2), ':', SUBSTRING(ArrivalTime, 3,4)), '%h:%i') | +---------------------------------------------------------------------------------------------+ | 04:20 | | 11:45 | | 10:10 | +---------------------------------------------------------------------------------------------+ 3 rows in set (0.00 sec)