diff options
Diffstat (limited to 'src/backend/utils/adt/ruleutils.c')
| -rw-r--r-- | src/backend/utils/adt/ruleutils.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c index 4bb8b7c76ff..5ba2550b823 100644 --- a/src/backend/utils/adt/ruleutils.c +++ b/src/backend/utils/adt/ruleutils.c @@ -8910,12 +8910,17 @@ get_opclass_name(Oid opclass, Oid actual_datatype, * We strip any top-level FieldStore or assignment ArrayRef nodes that * appear in the input, and return the subexpression that's to be assigned. * If printit is true, we also print out the appropriate decoration for the - * base column name (that the caller just printed). + * base column name (that the caller just printed). We might also need to + * strip CoerceToDomain nodes, but only ones that appear above assignment + * nodes. + * + * Returns the subexpression that's to be assigned. */ static Node * processIndirection(Node *node, deparse_context *context, bool printit) { StringInfo buf = context->buf; + CoerceToDomain *cdomain = NULL; for (;;) { @@ -8965,10 +8970,28 @@ processIndirection(Node *node, deparse_context *context, bool printit) */ node = (Node *) aref->refassgnexpr; } + else if (IsA(node, CoerceToDomain)) + { + cdomain = (CoerceToDomain *) node; + /* If it's an explicit domain coercion, we're done */ + if (cdomain->coercionformat != COERCE_IMPLICIT_CAST) + break; + /* Tentatively descend past the CoerceToDomain */ + node = (Node *) cdomain->arg; + } else break; } + /* + * If we descended past a CoerceToDomain whose argument turned out not to + * be a FieldStore or array assignment, back up to the CoerceToDomain. + * (This is not enough to be fully correct if there are nested implicit + * CoerceToDomains, but such cases shouldn't ever occur.) + */ + if (cdomain && node == (Node *) cdomain->arg) + node = (Node *) cdomain; + return node; } |