Continuing on always false expressions. There are three difficult cases, whose solutions which needs to be well thought out. This is not a case of simply removing the expressions, perhaps, but have to be sure.
First case: src \ backend \ executor \ nodeSubplan.c (line 507) if (node-> hashtable) node-> hastable is assigned with NULL at line 498, so the test will always fail. Second case: Here the case is similar, but worse. src \ backend \ executor \ nodeSubplan.c (line 535) if (node-> hashnulls) ResetTupleHashTable (node-> hashtable); node-> hashnulls is assigned with NULL at line 499, so the test will always fail. Otherwise, it would have already been discovered, because it would inevitably occur an access violation, since > hashtable would be accessed. Third case: \ src \ backend \ utils \ cache \ relcache.c (line 5190) if (relation-> rd_pubactions) It will never be executed, because if relation-> rd_pubactions is true, the function returns on line 5154. regards, Ranier Vilela