Hi,

I want to understand why one of my postgresql functions takes an eternity to 
finish.

Here's an example:

UPDATE comptes SET belongs_to_compte_id=42009 WHERE (codi_compte LIKE '10000%' 
AND empresa_id=2 AND nivell=11); // takes forever to finish

QUERY PLAN                                         
--------------------------------------------------------------------------------------------
 Seq Scan on comptes  (cost=0.00..6559.28 rows=18 width=81)
   Filter: (((codi_compte)::text ~~ '10000%'::text) AND (empresa_id = 2) AND 
(nivell = 11))
(2 rows)


but the same SELECT count, it's immediate:

SELECT count(id) FROM comptes WHERE codi_compte LIKE '10000%' AND empresa_id=2 
AND nivell=11;


what I'm doing wrong ?

thanks,

regards,

r.

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