I'm quite new to Postgres so I don't know how to read the execution
plans. However it is obvious that the plans for the query with and
without the function are different. I added some indices to the table
roleassertions and it seems to solve this big difference in the
execution times of both queries. So I guess it was not the function that
was the problem in the end. Thanks a lot!
Inanc
On 5/11/12 5:55 PM, Tom Lane wrote:
Inanc Seylan<inanc.seylan@xxxxxxxxx> writes:
It is IMMUTABLE. I attach the output of EXPLAIN both with and without
the simple function (returning true only) in the query.
EXPLAIN ANALYZE would have been far more helpful. However, the thing
that jumps out at me here is all the seqscans on table "symbols".
Do you not have an index on symbols.id? If you do, perhaps there is
a datatype-mismatch problem preventing it from being used.
regards, tom lane
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