如何将VARCHAR日期时间转换为DATETIME类型以填充表

Question

I have a table with a VARCHAR() column with values in this format:

2012-10-05T11:14:00-04:00

I need to put this data into another table where the data type of the field is DATETIME.

How would I go about converting

2012-10-05T11:14:00-04:00

to

2012-10-05 11:14:00

?

I tried:

CAST(LEFT(REPLACE(fieldtimestamp, 'T', ' '), 19) AS DATETIME)

But it keeps giving me the error:

Conversion failed when converting date and/or time from character string.

Answer 1

This will do: SELECT CONVERT(DATETIME,LEFT(fieldtimestamp,19),126)

No need for replacing the 'T' .

Answer 2

select CAST(LEFT(REPLACE('2012-10-05T11:14:00-04:00', 'T', ' '), 19) AS DATETIME)

works for me giving

2012-10-05 11:14:00.000

under sql server 2012

Answer 3

If you're using MS SQL Server 2008, you can use DATETIMEOFFSET instead of DATETIME and it will work.

BEGIN
DECLARE @d DATETIMEOFFSET
SELECT @d = '2012-10-05 11:14:00-04:00'
END

Answer 4

SELECT thedate, CAST( LEFT( REPLACE( thedate, 'T', ' ' ) , 21 ) AS DATETIME ) FROM MyTbl1

If you want the seconds you will need to take 21 letters,

thedate                     DATETIME
2012-10-05T11:14:00-04:00   2012-10-05 11:14:00
2012-10-05T11:14:00-05:00   2012-10-05 11:14:00

Worked fine in mysql