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How to include NULL values in Group Count

Posted on 2010-11-16
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Last Modified: 2012-05-10
Experts,

How can I create a Query that groups on a field and counts NULL values as well.

Tier 2     62
Tier 3     15

That's all. However there are 134 records. I would like the query to list:
Tier 2     62
Tier 3     15
Blank      57

I tried linking to a query with:

SELECT Count(*) AS NoTier
FROM tblStudent
WHERE (((tblStudent.tblStdTier) Is Null));

But because I am grouping my results are

Tier 2     62     57
Tier 3     15     57

I really need:
Tier 2     62
Tier 3     15
Blank      57

Because I am displaying the results in a continous form on a statistics page.

Thanks!



SELECT tblStudent.tblStdTier AS Tier, Count(tblStudent.tblStdTier) AS [Count]
FROM tblStudent
GROUP BY tblStudent.tblStdTier
HAVING (((tblStudent.tblStdTier)<>"0"));

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Question by:shogun5
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3 Comments
 
LVL 120

Expert Comment

by:Rey Obrero (Capricorn1)
ID: 34144896

try this


SELECT iif([tblStdTier] is null, "NoTier",[tblstdtier]) AS Tier, Count(ID) AS [Count]
FROM tblStudent
GROUP BY iif([tblStdTier] is null, "NoTier",[tblstdtier])
HAVING (((iif([tblStdTier] is null, "NoTier",[tblstdtier]))<>"0"));
0
 
LVL 120

Accepted Solution

by:
Rey Obrero (Capricorn1) earned 500 total points
ID: 34144901
or this

SELECT iif([tblStdTier] is null, "NoTier",[tblstdtier]) AS Tier, Count(*) AS [Count]
FROM tblStudent
GROUP BY iif([tblStdTier] is null, "NoTier",[tblstdtier])
HAVING (((iif([tblStdTier] is null, "NoTier",[tblstdtier]))<>"0"));
0
 

Author Closing Comment

by:shogun5
ID: 34144962
Yep! That worked! Thank you!
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