Dmitry Afanasiev wrote:
> Constraints must be checked AFTER updating ALL of rows, but really after
> every row.
> For illustrate try this simple sql script:
> CREATE TABLE n(n INTEGER PRIMARY KEY);
> INSERT INTO n VALUES(1);
> INSERT INTO n VALUES(2);
> INSERT INTO n VALUES(3);
> UPDATE n SET n = n + 1;
Yes. This is a known problem.
--
Alvaro Herrera http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support
