hi,
i know this is silly, but i can't find the way...
with mssql i can do this:
declare @my_var varchar(20) ;
set @my_var = 'something' ;
select @my_var ;
with mysql it's even easier:
set @my_var = 'something' ;
select @my_var ;
but, with postgre ? i don't know how to do that...