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Re: querying from 3 tables

From: ryanne cruz <ryanne(dot)cruz(at)up(dot)edu(dot)ph>
To: "\\\"pgsql-php(at)postgresql(dot)org\\\"" <pgsql-php(at)postgresql(dot)org>
Subject: Re: querying from 3 tables
Date: 2003-03-07 05:11:04
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-php
hi list. 
i have 3 tables with the following columns: 
table1: esourceid (primary key), brgyid, households 
table2: brgyid (primary key), munprovid 
table3: munprovid (primary key), geom 
i am given the esourceid and i need to query the brgyid and the households of 
a particular esourceid: query1="select brgyid, households from table1 where 
the resulting brgyid will then be used to query for the munprovid in table2: 
query2="select munprovid from table2 where brgyid=(query1);" 
the resulting munprovid will then be used to query for  the geom column: 
"select geom from table3 where munprovid=(query2);" 
my question is, how do i do this? any ideas?  


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