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 esourceid=$esourceid;" 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?