Fernan Aguero schrieb:
Hi,
I have a table containing some ~13 million rows. Queries on
indexed fields run fast, but unanchored pattern queries on a
text column are slooooow. Indexing the column doesn't help
(this is already mentioned in the manual).
http://www.postgresql.org/docs/8.2/interactive/indexes-types.html
However, no alternative solution is mentioned for indexing
and/or optimizing queries based on unanchored patterns:
i.e. description LIKE '%kinase%'.
Maybe trigram search might help you? Never tried it myself, but it seems
to be able to handle substring searches.
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