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Message Posted: Tue, 24 Sep 2002 @ 18:47:15 GMT

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Subj:   Count(case... to get a count(distinct acct_id) Is this possible?
From:   Burton, Bruce

Is this possible?

I'm trying to figure out how to do a count(distinct) to get a unique count of account numbers that fit the case criteria below. I can get the sum(case... logic to work fine but this only gives me record counts and not a distinct count of account numbers.

the statement below counts recs (this works fine but I need the distinct count of acct_id):

sum(case when orgnl_srv_dt >= '2002-05-08' and elec_addr_txt <> '   '
then 1
else 0 end) as count1

I was trying to get the below to count the distinct account numbers:
count(distinct(case when orgnl_srv_dt >= '2002-05-08' and elec_addr_txt <> ' '
   then b.acct_id else null end)) as count1,

The error code for the above is:

"3628 Only Identical Aggregrated Expressions can use the Distinct option"



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