Re: problem in joins

>   i am facing problem in joining three table...there are two columns common
> in two table..is it necessary to use both these two column..in where
> clauses.........


If you provide table definitions, it would be easier to say. But in the mean time you can read up
on joining table from the following link:

http://www.postgresql.org/docs/8.2/interactive/queries-table-expressions.html#QUERIES-JOIN

Regards,

Richard Broersma Jr.