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t-SQL format time and combine columns

Posted on 2011-09-19
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Last Modified: 2012-05-12
Hi All -

I have two columns... timeStart and timeEnd.  They contain the following values

timeStart = 1/1/1900 8:00 AM
timeEnd = 1/1/1900 5:00 PM

I need to cut the date out of the columns and combine the two of them into a new column called timeSpan, which would return this...

8:00 AM - 5:00 PM

I tried this....

timeStart + '-' + timeEnd As timeSpan

... but it doesn't work.  Can someone show me how I can get the result I'm looking for.

Thanks!
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Question by:cdemott33
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LVL 18

Expert Comment

by:lludden
ID: 36563133
SELECT CONVERT(varchar(5),TimeStart,108) + ' - ' + CONVERT(varchar(5),TimeEnd,108)
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Author Comment

by:cdemott33
ID: 36563211
Hi lludden - Thanks for your help.  Your code returned this value...

08:00 - 17:00

Is there a way to convert it from military time to standard time and add the AM/PM?
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LVL 18

Accepted Solution

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lludden earned 500 total points
ID: 36563343
SELECT SUBSTRING(CONVERT(varchar(20),StartTime,0),13,7) + ' - ' +  SUBSTRING(CONVERT(varchar(20),EndTime,0),13,7)
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LVL 25

Expert Comment

by:jogos
ID: 36563355
The complete syntax  can you find on http://msdn.microsoft.com/en-us/library/ms187928.aspx and http://msdn.microsoft.com/en-us/library/ms187748.aspx and http://msdn.microsoft.com/en-us/library/ms186323.aspx
Convert your date to a varchar (CONVERT), take a substring (SUBSTRING) from the time-part and that begins after the first space(CHARINDEX).

You can also use the DATEPART function http://msdn.microsoft.com/en-us/library/ms174420.aspx 

datepart(hour,timeStart)+':'datepart(minute,timeStart) ....but then the AMPM becomes difficult.

0
 

Author Closing Comment

by:cdemott33
ID: 36563380
This worked.  Thank you!  I also made a few changes to your code based on some research I was doing and came up with this...

CONVERT(varchar(15), CAST(timeStart As Time), 100) + ' - ' + CONVERT(varchar(15), CAST(timeEnd As Time), 100) as timeSpan,

Which also works.  Thanks again everone who helped me.
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