Question

Getting this error:
Each GROUP BY expression must contain at least one column that is not an outer reference.

RowId   ErrorDatetime             ErrorNum         ErrorMessage 
824 2010-09-24 08:01:42.000   9001       Account 55 not found
823 2010-09-24 08:00:56.000   9001      Account 22222222222 not found
822 2010-09-24 05:06:27.000   9001      Account 55 not found
821 2010-09-24 05:05:42.000   9001      Account 22222222222 not found

I’m trying to get the errormessage, and the first time it occurred for the current day, and that’s working because I just do “Group by ErrorMessage”.

However, if I want to find the first for each day:

SELECT Min(ErrorDateTime) as 'ErrorDateTime', Min(ErrorMessage) as 'ErrorMessage'
FROM CommonError 
WHERE dbo.StripTimeFromDate(ErrorDateTime) = dbo.StripTimeFromDate(getdate()) 
     and ErrorNumber = '9001' 
GROUP BY dbo.StripTimeFromDate(getdate()), ErrorMessage 

The handy-dandy function (from http://bloggingabout.net/blogs/jschreuder/archive/2007/03/13/useful-t-sql-date-functions.aspx):

ALTER FUNCTION [dbo].[StripTimeFromDate] (@inputDate DATETIME)
RETURNS DATETIME
BEGIN
    RETURN DATEADD(d, DATEDIFF(d, 0, @inputDate), 0)
END

Answer 1

I had getdate() instead of ErrorDate in the “group by”.
I think I saw similar issues in other forums where people had a literal in the “group by”.

Correction is:

GROUP BY dbo.StripTimeFromDate(ErrorDate), ErrorMessage