[Charset koi8-r unsupported, filtering to ASCII...]
>
> Hi!
>
>
> How can I refer the calculated field in HAVING clause.
>
> This work in MySQL:
>
> SELECT some_expression as field1, ...
> FROM tablename
> GROUP BY ...
> HAVING field1>0;
>
> PostgreSQL gives error "Attribute 'field1' not found".
Worked here in development tree:
select state as test, count(*)
from friends
group by test
having count(*) > 1\g
test|count
----+-----
MA | 2
NJ | 2
(2 rows)
I think your problem is that field1 is not an aggregate or if it is, you
may need to repeat the aggregate in the having.
--
Bruce Momjian | http://www.op.net/~candle
maillist@candle.pha.pa.us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026
