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How to use Having correctly?
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Information générale
Forum:
Microsoft SQL Server
Catégorie:
Syntaxe SQL
Versions des environnements
SQL Server:
SQL Server 2005
Divers
Thread ID:
01521102
Message ID:
01521111
Vues:
31
>>Hi,
>>
>>I am getting an error in the following (simplified) SQL Select:
>>
>>
>>select SUM(FIELD1) AS FIELD1, SUM(PODET.ITEM_QUANT) AS ITEM_QUANT, POREC.PODET_PK 
>>FROM POREC RIGHT JOIN PODET ON PODET.PODET_PK = POREC.PODET_PK GROUP BY
>> PODET.PODET_PK 
>>HAVING ITEM_QUANT > 0
>>
>>
>>The error says "Column PODET.ITEM_QUANT is invalid in the HAVING clause because it is not contained in either
>>an aggregate function or the GROUP BY clause. What I don't understand is why SUM() around ITEM_QUANT is ignored? Or is there another problem with above SQL select?
>
>
>
>select SUM(FIELD1) AS FIELD1, SUM(PODET.ITEM_QUANT) AS ITEM_QUANT, POREC.PODET_PK 
>FROM POREC RIGHT JOIN PODET ON PODET.PODET_PK = POREC.PODET_PK GROUP BY
> PODET.PODET_PK 
>HAVING SUM(Podet.ITEM_QUANT) > 0
>
>
>Having should have an aggreage function for Item_Quant. You can not reference a new field in the Having clause, so you must repeat the same expression. You can only reference a newly created alias in the ORDER BY clause of the SQL - Select.

Naomi and Borislav,

Thank you both very much. I understand now.
"The creative process is nothing but a series of crises." Isaac Bashevis Singer
"My experience is that as soon as people are old enough to know better, they don't know anything at all." Oscar Wilde
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