Better way to convert MDDYYYY to date

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Better way to convert MDDYYYY to date

Author

Topic

ITTrucker
Yak Posting Veteran

64 Posts

Posted - 2014-07-10 : 16:25:13

A client is sending us a date format of a 1-2 digit month(they drop the leading 0), 2 digit day, 4 digit year: 7102014. I'm loading this into an etl table as a string, but then I need to insert it into a date column.

I have a working SQL query that will convert it to a date if the month is 1 or 2 digits, but I'm wondering if there's a better (shorter) way I can handle this:

declare @Date varchar(10)
set @Date = '12152022'
--set @Date = '6012014'
select convert(date,RIGHT(LTRIM(RTRIM(@Date)),4) + SUBSTRING(LTRIM(RTRIM('0' + @Date)),LEN('0' + @Date)-7,2) + SUBSTRING(LTRIM(RTRIM(@Date)),LEN(@Date)-5,2))

Thanks

tkizer
Almighty SQL Goddess

38200 Posts

Posted - 2014-07-10 : 16:43:04

select case when len(@Date)=8 then @Date else '0' + @Date end

Tara Kizer
SQL Server MVP since 2007
http://weblogs.sqlteam.com/tarad/

SwePeso
Patron Saint of Lost Yaks

30421 Posts

Posted - 2014-07-10 : 17:04:29

[code]DECLARE @Sample TABLE
(
Data VARCHAR(10) NOT NULL
);

INSERT @Sample
(
Data
)
VALUES ('12152022'),
('6012014');

-- SwePeso
SELECT Data,
CONVERT(DATETIME, STUFF(STUFF(Data, LEN(Data) - 3, 0, '/'), LEN(Data) - 5, 0, '/'), 101) AS theResult
FROM @Sample;[/code]

Microsoft SQL Server MVP, MCT, MCSE, MCSA, MCP, MCITP, MCTS, MCDBA

ITTrucker
Yak Posting Veteran

64 Posts

Posted - 2014-07-11 : 09:10:37

SwePeso,

That worked, and 50 characters shorter than what I had. I haven't seen the STUFF command before so thanks.

Still trying to get the client to send us CCYYMMDD format but this will work nicely until they switch (if ever).

Thanks again.

madhivanan
Premature Yak Congratulator

22864 Posts

Posted - 2014-07-15 : 08:45:33

Another method

select dateadd(month,(data/1000000)-1, dateadd(year,data%10000-1900,0)+(data/10000%100-1)) from @sample

Madhivanan

Failing to plan is Planning to fail

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