On 11/01/2019 16:22, Pavel Stehule wrote:
> The documentation contains paragraph
>
> + The generation expression can only use immutable functions and cannot
> + use subqueries or reference anything other than the current row
> in any
> + way.
>
> It is necessary for stored columns?
See here:
https://www.postgresql.org/message-id/b5c27634-1d44-feba-7494-ce5a31f914ca@2ndquadrant.com
> I tested it with pseudo constant - current_timestamp, session_user. But
> current_database() is disallowed.
>
> on second hand, this is strange
>
> postgres=# create table foo3 (inserted text generated always as
> (current_timestamp) virtual);
> CREATE TABLE
Ah, the volatility checking needs some improvements. I'll address that
in the next patch version.
--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
