Finish incomplete revert of ec63622c0.
The code change this made might well be fine to keep, but the
comment justifying it by reference to self-join removal isn't.
Let's just go back to the status quo ante, pending a more thorough
review/redesign of SJE.
(I found this by grepping to see if any references to self-join
removal remained in the tree.)
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/07746a8ef2a871d904c26364cdca4e7feeffe395
Modified Files
--------------
src/backend/optimizer/prep/prepunion.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)