postgres_fdw: Remove redundant check in semijoin_target_ok()
If a var belongs to the innerrel of the joinrel, it's not possible that
it belongs to the outerrel. This commit removes the redundant check from
the if-clause but keeps it as an assertion.
Discussion:
https://postgr.es/m/flat/CAHewXN=
postgres_fdw: Remove redundant check in semijoin_target_ok()
If a var belongs to the innerrel of the joinrel, it's not possible that
it belongs to the outerrel. This commit removes the redundant check from
the if-clause but keeps it as an assertion.
Discussion:
https://postgr.es/m/flat/CAHewXN=
