Re: GROUP BY ...speed issue

schaffner_at_pewter.chrr.ohio-state.edu wrote:
>
> The following is the SQL statements that use to run in about 20
> minutes. The database hasn't changed size...
>
> INSERT INTO TEMP_FREQ_COUNTER_1996
> (QNAME, Extention, QVALUE, COUNT)
> select c.qname, c.qvalue, count(*)
> from system.recipient R, freq_counter_1996 C
> WHERE r.qname=c.qname and
> r.response in (c.qindex, c.qvalue)
> group by c.qname, c.qvalue;
>
> Now it takes a day and half. I had the indicies rebuilt and still slow.
> The dba says that she didn't change anything. Any educated guess what may
> have changed to slow this down so much?
>
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Not knowing the platform, etc this is a bit hard.

I had the same thing happen -- the server was filled, no disk space and all processes slowed considerably....

Mike K. Received on Thu Oct 09 1997 - 00:00:00 CEST