On Thu, Jan 29, 2015 at 9:04 PM, Stephen Frost <sfrost@snowman.net> wrote:
> A policy grants the ability to SELECT, INSERT, UPDATE, or DELETE rows
> which match the relevant policy expression. Existing table rows are
> checked against the expression specified via USING, while new rows
> that would be created via INSERT or UPDATE are checked against the
> expression specified via WITH CHECK. When a USING expression returns
> false for a given row, that row is not visible to the user. When a WITH
> CHECK expression returns false for a row which is to be added, an error
> occurs.
Yeah, that's not bad. I think it's an improvement, in fact.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
