Re: logical column ordering - Mailing list pgsql-hackers

From Alvaro Herrera
Subject Re: logical column ordering
Date
Msg-id 20150227193413.GJ2384@alvh.no-ip.org
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In response to Re: logical column ordering  (Tomas Vondra <tomas.vondra@2ndquadrant.com>)
Responses Re: logical column ordering  (Tomas Vondra <tomas.vondra@2ndquadrant.com>)
List pgsql-hackers
Tomas Vondra wrote:

> I think we could calls to the randomization functions into some of the
> regression tests (say 'create_tables.sql'), but that makes regression
> tests ... well, random, and I'm not convinced that's a good thing.
> 
> Also, this makes regression tests harder to think, because "SELECT *"
> does different things depending on the attlognum order.

No, that approach doesn't seem very useful.  Rather, randomize the
columns in the CREATE TABLE statement, and then fix up the attlognums so
that the SELECT * expansion is the same as it would be with the
not-randomized CREATE TABLE.

-- 
Álvaro Herrera                http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services



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