On 2016/09/15 15:29, Ashutosh Bapat wrote:
On Wed, Sep 14, 2016 at 8:52 PM, Robert Haas <robertmh...@gmail.com> wrote:
I'm not sure why it wouldn't work
to just use the lowest RTI involved in the join, though; the others
won't appear anywhere else at that query level.
So +1 for
using the smallest RTI to indicate a subquery.
+1 for the general idea.
ISTM that the use of the same RTI for subqueries in multi-levels in a
remote SQL makes the SQL a bit difficult to read. How about using the
position of the join rel in join_rel_list, (more precisely, the position
plus list_length(root->parse->rtable)), instead?
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