Dear Steve,
On 27.10.2009, at 16:19, Steve Edberg wrote:
Or you could do an ALTER TABLE afterwards to add appropriate
indexes. And are you familiar with the EXPLAIN command to help
optimize queries/decide what indexes to add?
Thanks for this! I have added indicies with ALTER TABLE.
And using EXPLAIN and ANALYZE TABLE I found out that in fact I am
creating a huge Cartesian product joining fields of two tables which
are not indexed!
No wonder it took ages to get this query done, I used up 99% of CPU.
Definitely it can and it should be optimized.
Thanks for your tips again.
Cheers,
Olga
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