Pl. help: cost of query plans in geqo

From: Ms swati chande <swativc(at)yahoo(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: Pl. help: cost of query plans in geqo
Date: 2009-07-26 11:03:37
Message-ID: 932443.74144.qm@web112607.mail.gq1.yahoo.com
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Hi,
 
I have a query with 20 relations, the GEQO is used to solve this query.
 
When the value of
 
pool->data[i].worth
 
was displayed, from random_init_pool() [geqo_pool.c], exactly the same value was obtained for all individuals.
 
Also when the value of pool->data[i].worth was printed from geqo_main.c, the same value was obtained for all the 250 individuals.
 
Do all plans have the same fitness?!
 
Please help me understand this.
 
Thanks
Regards
Swati
 

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