Обсуждение: pgsql: Compare varnullingrels too in assign_param_for_var().

Compare varnullingrels too in assign_param_for_var().

Oversight in 2489d76c4.  Preliminary analysis suggests that the
problem may be unreachable --- but if we did have instances of
the same column with different varnullingrels, we'd surely need
to treat them as different Params.

Discussion: https://postgr.es/m/412552.1706203379@sss.pgh.pa.us

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/5e444a2526cc6f4052ce0004e1df69135c47338a

Modified Files
--------------
src/backend/optimizer/util/paramassign.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)