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sql datediff returning wrong number

Posted on 2014-07-21
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Last Modified: 2014-07-21
In the attachment you can see the code and the results the Months columin is wrong, not sure why. Capture.PNG
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Question by:rschmehl
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5 Comments
 
LVL 65

Assisted Solution

by:Jim Horn
Jim Horn earned 250 total points
ID: 40209578
<wild guess>

You can't use one column in a SELECT clause in an expression in another column in the SELECT clause.

So .. the Months calculation, where it references MC.MemberCoverateTerminationDate, is using the column value and not the calculated value in the previous column.

Otherwise, the datediff looks correct.
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LVL 34

Accepted Solution

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Brian Crowe earned 250 total points
ID: 40209595
My assumption is in line with Jim Horn's and the majority of your MemberCoverageTerminationDate values are far off in the future somewhere around 1/1/2079.  Add the unmanipulated MemberCoverageTerminationDate to your select list to see what is actually being calculated.
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Author Comment

by:rschmehl
ID: 40209793
you aare right, i did just that and the 4 dates in the table are off   . i.e. 1978 for some reason  so you are both right. Thanks you very much
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Author Comment

by:rschmehl
ID: 40209840
I've requested that this question be closed as follows:

Accepted answer: 0 points for rschmehl's comment #a40209793
Assisted answer: 250 points for Jim Horn's comment #a40209578
Assisted answer: 250 points for Brian Crowe's comment #a40209595

for the following reason:

Jim and Brian are both rigtt
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Author Closing Comment

by:rschmehl
ID: 40209841
They were right. thank you
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