This has stumped me. Not sure how to get a distinct sum inside a case statement.
Here's a sample of my data in the two fields (I'm actually doing this for a year but just 2 months here for easier reading):
empid date
132 7/1/2012
143 7/1/2012
154 7/2/2012
154 7/3/2012
123 8/1/2012
197 8/1/2012
197 8/2/2012
187 8/3/2012
I need a count of each month in a column but each emp needs to count as one, like this:
Jul11 Aug11
3 3
but instead I get 4 and 4. Here is my code
SELECT sum(case when month(hist_date)='07' and year(hist_date) = '2011' then 1 else 0 end) as Jul11,
sum(case when month(hist_date)='08' and year(hist_date) = '2011' then 1 else 0 end) as Aug11
FROM empjobst
I've tried putting the word distinct in between Select and sum but that made it a 1 and 1.
Any help would be much appreciated.
Cyndi
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