dear Andreas,
thanks for the answer; yes, round should be the first, but it gives an
error: Function round(real, integer) does not exists
following this mail
(http://archives.postgresql.org/pgsql-bugs/2003-01/msg00074.php) I created a
new function and now works!
best regards,
Pere
Andreas Kretschmer-4 wrote:
>
> In response to pere roca :
>>
>> hi all,
>>
>> I update a column based on a division over two real values. It causes a
>> huge
>> number of decimals that I wanna to limit.
>>
>> UPDATE point_pol SET taxa_record = ((SELECT ((CASE WHEN numtax>0 THEN
>> numtax/numreg ELSE 1 END))) where userid='hello'
>>
>> taxa_record values are real and with real I cannot limit the decimals.
>> I tried to apply a round in the sql sentence but complains that round
>> must
>> be applied to a single value each time.
>
> Tray:
>
> UPDATE point_pol SET taxa_record = round(((SELECT ((CASE WHEN numtax>0
> THEN numtax/numreg ELSE 1 END))),2) ...
>
>
> to round to 2 decimal places.
>
>
> Andreas
> --
> Andreas Kretschmer
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