Wrox Programmer Forums Aggregate Sum Problem
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November 3rd, 2003, 05:09 PM
 akc Registered User Join Date: Oct 2003 Posts: 4 Thanks: 0 Thanked 0 Times in 0 Posts
Aggregate Sum Problem

Hi,

Here is my data:

PosID | Name | Gender | Ethnicity
---------------------------------
828 alan male caucasian
828 jen female black
828 cathy female black
829 david male caucasian
829 peter male caucasian
829 vince male black

Here is the outcome I need

PosID | male/caucasian | female/caucasian | male/black / female/black
828 1 0 0 2
829 2 0 1 0

Any help will be appreciated.

Alan

November 3rd, 2003, 05:38 PM
 Jeff Mason Friend of Wrox Join Date: Jun 2003 Posts: 839 Thanks: 0 Thanked 1 Time in 1 Post

You're try to do a variation on a cross tab (or pivot) query.

It's ugly.

The idea is to create an expression for each output column where you SUM either a 1 or a zero depending on whether the column criteria match for each desired output column:
Code:
```SELECT PosID,
SUM(CASE WHEN Gender='male' AND Ethnicity='caucasian' THEN 1 ELSE 0 END) as 'male/caucassian',
SUM(CASE WHEN Gender='female' AND Ethnicity='caucasian' THEN 1 ELSE 0 END) as 'female/caucasian',
...
GROUP BY PosID
ORDER BY PosID;```
Jeff Mason
Custom Apps, Inc.
www.custom-apps.com

November 4th, 2003, 10:07 AM
 akc Registered User Join Date: Oct 2003 Posts: 4 Thanks: 0 Thanked 0 Times in 0 Posts

Thanks Jeff.

Alan

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