On Tue, Oct 13, 2009 at 4:17 PM, Shaul Dar <shaul...@gmail.com> wrote:
> Hi, > > I am running performance simulation against a DB. I want to randomly pull > different records from a large table. However the table has no columns that > hold sequential integer values (1..MAX), i.e. the columns all have "holes" > (due to earlier filtering). > what do yo umean ? you can restrict range of integer column (or any other type) with constraints, for instance CHECK foo( a between 1 and 100); > Also PG does not have a concept of an auto-increment pseudo-column like > Oracle's "rownum". Any suggestions? > not true - it has sequences, and pseudo type serial. Rtfm!. -- GJ
