Derek Kalweit wrote:
>> For some reason, the nCount field below gets defined as a character
>> field. !?!?!!?!?????????
>>
>> SELECT t1.iid, t1.cTown, IFNULL(COUNT(p1.iid),0) as
>> nCount, IFNULL(SUM(p1.nAmount),0) as nSum
>> FROM towns t1
>> LEFT JOIN accounts a1
>> ON a1.itownid = t1.iid
>> LEFT JOIN payment_header p1
>> ON p1.iacctid = a1.iid AND p1.dDate =
>> '<<lcDate>>' AND p1.iCount = 1
>> WHERE t1.iCompID = <<this.iCompID>>
>> GROUP BY 1,2
>
> My guess, is that MySQL is trying to determine the field type when it
> first parses the SQL statement. It must not understand COUNT() because
> it's an aggregate function, and therefore assumes a character return
> as a lowest common denominator.
It's easy to determine if that is the case. Just try :
SELECT t1.iid, t1.cTown, 1.00 * IFNULL(COUNT(p1.iid),0) as
nCount, 1.00 * IFNULL(SUM(p1.nAmount),0) as nSum
FROM towns t1
LEFT JOIN accounts a1
ON a1.itownid = t1.iid
LEFT JOIN payment_header p1
ON p1.iacctid = a1.iid
AND p1.dDate = '<<lcDate>>'
AND p1.iCount = 1
WHERE t1.iCompID = <<this.iCompID>>
GROUP BY 1,2
>
> Are you sure you need IFNULL() in this SQL statement? Usually SQL
> aggregate functions automatically disregard NULL values...
>
>
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