The result is that for short queries (Q1 and Q2) it runs in a few
seconds on both Oracle and PG. The difference becomes important with
Q3 : 8 seconds with oracle
80 sec with PG
and too much with Q4 : 28s with oracle
17m20s with PG !
Of course when I run 100
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Subject: RE: [PERFORM] Tuning queries on large database
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Thread-Topic: [PERFORM] Tuning queries on large
sort_mem = 5
That is way, way too large. Try more like 5000 or lower.
num_poste | numeric(9,0)| not null
For starters numerics are really, really slow compared to integers. Why
aren't you using an integer for this field since youhave '0' decimal
places.
schema
