varchar转换为datetime类型

Question

I wonder if with this conversion I have 100% certainty that the time for the my_date column will be properly converted, in general, that the whole date will look correct after the conversion.

The date will always be correctly converted from the format dd-mm-yyyy HH:mm:ss to the format yyyy-mm-dd HH:mm:ss ?

What is the best conversion for this case?

Below is an example for the problem described:

DECLARE @tmp TABLE (my_date VARCHAR(20))

INSERT INTO @tmp VALUES ('25-02-2019 19:30:12')
INSERT INTO @tmp VALUES ('01-03-2019 09:30:11')
INSERT INTO @tmp VALUES ('22-02-2018 19:42:12')
INSERT INTO @tmp VALUES ('01-11-2019 19:30:17')

SELECT CONVERT (DATETIME, my_date, 105) FROM @tmp

Answer 1

DECLARE @tmp TABLE (my_date VARCHAR(20))

INSERT INTO @tmp VALUES ('25-02-2019 19:30:12')
INSERT INTO @tmp VALUES ('01-03-2019 09:30:11')
INSERT INTO @tmp VALUES ('22-02-2018 19:42:12')
INSERT INTO @tmp VALUES ('01-11-2019 19:30:17')

SELECT CONVERT(NVARCHAR(20),CONVERT(DATETIME, my_date, 105),120) FROM @tmp