Re: delta relations in AFTER triggers

On Tue, Sep 23, 2014 at 12:46 PM, Heikki Linnakangas
<hlinnakangas@vmware.com> wrote:
> On 09/15/2014 05:25 PM, Kevin Grittner wrote:
> Now, how do we make the tuplestores work similarly? Here's what I think we
> should do:
>
> Add a new p_tableref_hook function pointer, similar to p_paramref_hook.
> Whenever the parser sees a RangeVar that it doesn't recognize (or actually,
> I think it should call it *before* resolving regular tables, but let's
> ignore that for now), it calls the p_tableref_hook. It can return a new
> RelationParam node (similar to regular Param), which contains a numeric ID
> for the table/tuplestore, as well as its tuple descriptor.
>
> For the execution phase, add a new array of Tuplestorestates to
> ParamListInfo. Similar to the existing array of ParamExternalDatas.

I haven't been following this issue closely, but this sounds like a
really nice design.

-- 
Robert Haas
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