On Mon, Jun 6, 2016 at 6:07 AM, Amit Kapila <amit.kapil...@gmail.com> wrote:
> That seems doable, as for such rels we can only have Vars and
> PlaceHolderVars in targetlist.  Basically, whenever we are adding
> PlaceHolderVars to a relation, just remember that information and use it
> later.  The patch doing the same is attached with this mail.  Now still,
> this won't cover the case of ChildRels for an Append Relation as for that we
> adjust target list separately in set_append_rel_size.  I think we need to
> deal with it separately.

This approach looks pretty good to me.  Here's a revised version of
your patch, with some renaming and other adjustments.  I'm not sure
exactly what you're referring to in set_append_rel_size, but I did add
a line of code there that might be relevant.

Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

Attachment: check-tlists-rmh.patch
Description: binary/octet-stream

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