Re: [HACKERS] optimization join on random value

Anton <djeday84@gmail.com>

From: Anton <djeday84@gmail.com>
To: Jim Nasby <Jim.Nasby@BlueTreble.com>, pgsql-general <pgsql-general@postgresql.org>
Date: 2015-05-04T08:48:02Z
Lists: pgsql-hackers, pgsql-general
Yahooo !
Many thanks !

soe=# explain  EXECUTE test( random()*45000 );
                                      QUERY PLAN
-------------------------------------------------------------------------------------
  Index Scan using addresses_cust_ix on addresses (cost=0.43..16.48 
rows=3 width=84)
    Index Cond: (customer_id = 13117::bigint)

On 04.05.2015 05:10, Jim Nasby wrote:
> PREPARE test AS SELECT ... WHERE customer_id = $1;
> EXECUTE test( random()*45000 );