diff options
Diffstat (limited to 'src/backend/utils/adt/selfuncs.c')
| -rw-r--r-- | src/backend/utils/adt/selfuncs.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/src/backend/utils/adt/selfuncs.c b/src/backend/utils/adt/selfuncs.c index db1792bf8d4..7361e9d43ca 100644 --- a/src/backend/utils/adt/selfuncs.c +++ b/src/backend/utils/adt/selfuncs.c @@ -1816,10 +1816,19 @@ strip_array_coercion(Node *node) { for (;;) { - if (node && IsA(node, ArrayCoerceExpr) && - ((ArrayCoerceExpr *) node)->elemfuncid == InvalidOid) + if (node && IsA(node, ArrayCoerceExpr)) { - node = (Node *) ((ArrayCoerceExpr *) node)->arg; + ArrayCoerceExpr *acoerce = (ArrayCoerceExpr *) node; + + /* + * If the per-element expression is just a RelabelType on top of + * CaseTestExpr, then we know it's a binary-compatible relabeling. + */ + if (IsA(acoerce->elemexpr, RelabelType) && + IsA(((RelabelType *) acoerce->elemexpr)->arg, CaseTestExpr)) + node = (Node *) acoerce->arg; + else + break; } else if (node && IsA(node, RelabelType)) { |