mysql将字符串转换为时间格式来自数据库的wheb查询

Question

将字段存储时间设置为varchar EX：06:30 AM。我需要从此字段中选择一个查询并转换为数字6.30。

Answer 1

使用date

转换字符串

echo date('g.i',strtotime('06:30 AM'));

输出6.30

g => 12-hour format of an hour without leading zeros    1 through 12
i => Minutes with leading zeros 00 to 59

Answer 2

将<{1}}用于此

TIME_FORMAT()

修改

SELECT TIME_FORMAT( column_name, '%H.%i' ) AS time from table_name;