diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/optimizer/util/clauses.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/backend/optimizer/util/clauses.c b/src/backend/optimizer/util/clauses.c index aba496253b9..e046632d6ed 100644 --- a/src/backend/optimizer/util/clauses.c +++ b/src/backend/optimizer/util/clauses.c @@ -2758,7 +2758,9 @@ eval_const_expressions_mutator(Node *node, /* * We can remove null constants from the list. For a non-null * constant, if it has not been preceded by any other - * non-null-constant expressions then that is the result. + * non-null-constant expressions then it is the result. Otherwise, + * it's the next argument, but we can drop following arguments + * since they will never be reached. */ if (IsA(e, Const)) { @@ -2766,6 +2768,8 @@ eval_const_expressions_mutator(Node *node, continue; /* drop null constant */ if (newargs == NIL) return e; /* first expr */ + newargs = lappend(newargs, e); + break; } newargs = lappend(newargs, e); } |