Re: sql question; checks if data already exists before

nuno wrote:

>hi, there. i'm trying to write a SQL statement which does the following
>things.
>
>1. checks if data already exists in the database
>2. if not, insert data into database otherwise skip.
>
>
>
Check this thread :

http://archives.postgresql.org/pgsql-general/2005-10/msg01787.php