Re: General performance problem!

Thanks for the tip for the index on multiple columns !  (I never do inserts
on this table so insert time doesn't matter)

Mys posgresql version is : PostgreSQL 7.2.1

Here are the results of the EXPLAIN ANALYZE you asked me to execute.


explain analyse select cp from base_aveugle where cp='69740' and effectif
between 1 and 50;
   NOTICE:  QUERY PLAN:
      Index Scan using base_aveugle_cp_eff on base_aveugle
(cost=0.00..508.69 rows=126 width=32)
      (actual time=0.27..11.56 rows=398 loops=1)
      Total runtime: 11.77 msec
   EXPLAIN

explain analyse select cp from base_aveugle where cp like '69%' and effectif
between 1 and 50 and naf like '24%' or naf like '25%';
   NOTICE:  QUERY PLAN:
   Index Scan using base_aveugle_cp_eff_naf, base_aveugle_naf on
base_aveugle  (cost=0.00..100001.89 rows=25245 width=32)
   (actual time=4.40..353.69 rows=6905 loops=1)
   Total runtime: 355.82 msec
   EXPLAIN


thx ;)


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