Re: Logical Replication WIP - Mailing list pgsql-hackers

From Peter Eisentraut
Subject Re: Logical Replication WIP
Date
Msg-id 28681a48-8366-4343-3bf4-5381385c2f40@2ndquadrant.com
Whole thread Raw
In response to Re: Logical Replication WIP  (Petr Jelinek <petr@2ndquadrant.com>)
Responses Re: Logical Replication WIP
List pgsql-hackers
On 9/23/16 9:28 PM, Petr Jelinek wrote:
>> Document to what extent other relation types are supported (e.g.,
>> > materialized views as source, view or foreign table or temp table as
>> > target).  Suggest an updatable view as target if user wants to have
>> > different table names or write into a different table structure.
>> > 
> I don't think that's good suggestion, for one it won't work for UPDATEs
> as we have completely different path for finding the tuple to update
> which only works on real data, not on view. I am thinking of even just
> allowing table to table replication in v1 tbh, but yes it should be
> documented what target relation types can be.

I'll generalize this then to: Determine which relation types should be
supported at either end, document that, and then make sure it works that
way.  A restrictive implementation is OK for the first version, as long
as it keeps options open.

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




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