Phoenix Kiula wrote:
Hi,
I have an index on the user_id field in the query below:
myuser=# delete from clients where user_id like '64.22.91.%';
DELETE 22
Time: 220324.975 ms
Is there any reason why it's taking 220 seconds to run this simple
query? There are about 3 million rows in this table.
First guess is that it's not using the index. What does
EXPLAIN ANALYSE SELECT user_id FROM clients WHERE user_id LIKE '...'
show?
Check the list archives for locale and like and text_pattern_ops too -
that's a good place to check.
--
Richard Huxton
Archonet Ltd
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