diff options
Diffstat (limited to 'src/backend/utils/adt/ruleutils.c')
| -rw-r--r-- | src/backend/utils/adt/ruleutils.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c index 3a3f7fb71d7..ebfac92ee59 100644 --- a/src/backend/utils/adt/ruleutils.c +++ b/src/backend/utils/adt/ruleutils.c @@ -3870,7 +3870,8 @@ get_variable(Var *var, int levelsup, bool istoplevel, deparse_context *context) Var *aliasvar; aliasvar = (Var *) list_nth(rte->joinaliasvars, attnum - 1); - if (IsA(aliasvar, Var)) + /* we intentionally don't strip implicit coercions here */ + if (aliasvar && IsA(aliasvar, Var)) { return get_variable(aliasvar, var->varlevelsup + levelsup, istoplevel, context); @@ -4162,6 +4163,8 @@ get_name_for_var_field(Var *var, int fieldno, elog(ERROR, "cannot decompile join alias var in plan tree"); Assert(attnum > 0 && attnum <= list_length(rte->joinaliasvars)); expr = (Node *) list_nth(rte->joinaliasvars, attnum - 1); + Assert(expr != NULL); + /* we intentionally don't strip implicit coercions here */ if (IsA(expr, Var)) return get_name_for_var_field((Var *) expr, fieldno, var->varlevelsup + levelsup, |