ddmmyyyy to sql datetime in SQL

Question

I need to convert a nvarchar value to datetime in T-SQL. The value is in ddmmyyyy format, e.g. 23072009

I need t

Answer 1

Change VARCHAR (dd-mm-yyyy) to date (yyyy-mm-dd) in SQL Server.

DECLARE @VarDate VARCHAR(10)
SET @VarDate  = '22-02-1994'

SELECT CONVERT(DATETIME, CONVERT(VARCHAR, CONVERT(DATE, @VarDate, 103), 102))

Answer 2

Format 103 expects dd/mm/yyyy. (see here)

I don't think you'll be able to do it using convert, as non of the convert options have that format.

Answer 3

You can define custom function like this:

CREATE FUNCTION [dbo].[GetCustomDate] (@customDateString NVARCHAR(MAX)) 
RETURNS DATETIME
AS
BEGIN

    RETURN CONVERT(DATETIME, RIGHT(@customDateString, 4) + RIGHT(LEFT(@customDateString, 4), 2) + LEFT(@customDateString, 2))

END

Answer 4

You need to cast a string and not a int. Put some quotes:

convert(datetime, '23072009', 103)

And 103 gets the string like 'dd/mm/yyyy' and not 'ddmmyyyy'.

Answer 5

The style 103 will accept strings with dd/mm/yyyy format. So your code should be

declare @date varchar(8)
set @date='23072009'
select convert(datetime,stuff(stuff(@date,5,0,'/'),3,0,'/')  , 103) 

Answer 6

Rebuild your format to yyyymmdd.

declare @D varchar(8)
set @D = '23072009'

select cast(right(@D, 4)+substring(@D, 3, 2)+left(@D, 2) as datetime)