On 2018-Nov-07, Amit Langote wrote:

> I think the result in this case should be an error, just as it would in
> the regular inheritance case.
> 
> create table parent (a text);
> create table child (a text collate "en_US") inherits (parent);
> NOTICE:  merging column "a" with inherited definition
> ERROR:  column "a" has a collation conflict
> DETAIL:  "default" versus "en_US"
> 
> In fact, I see that ATTACH PARTITION rejects a partition if collations
> don't match.

Hmm, I'm thinking perhaps we shouldn't backpatch this part.  It's
obviously a bug, but we might break somebody's working apps.  Therefore
I think I'd rather leave it out of the current bugfix and commit
separately.

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

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