将几种格式的文本列转换为MySQL中的日期列

Question

I have a column, named 'ActionTime' with varchar entries of the following format, either:

'14/02/2016 5:05'

or

'14/02/2016 15:05'

I want to create a query that will return a new column with the values from ActionTime as a datetime format. I have:

UPDATE `test1`
SET `newcol` = str_to_date( `ActionTime` , '%d/%m/%Y %h:%i' );

which works assuming there aren't dates like '4/02/2016 15:05' but only like '14/02/2016 5:05'.

Can you think of a query to solve this?

Answer 1

You want to use %H for 24 hour format instead of %h :

update test1
set newcol = str_to_date(ActionTime, '%d/%m/%Y %H:%i');