Gene wrote:
Thanks for the suggestion. Actually I went ahead and created a reverse
function using plpgsql, created an index using reverse column and now
my queries use "where reverse(column) like reverse('%2345') and it's
using the index like i hoped it would! Now if I could figure out how
to optimize like '%2345%' queries. I don't want to create many
indexes though the table is very write heavy.
You can't because that text can be anywhere inside the database field,
so the whole field basically has to be checked to see if it's there.
You could check out full text indexing (tsearch2).
<shameless plug>
http://www.designmagick.com/article/27/PostgreSQL/Introduction-to-Full-Text-Indexing
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