diff options
Diffstat (limited to 'src/backend/utils/fmgr/funcapi.c')
| -rw-r--r-- | src/backend/utils/fmgr/funcapi.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/backend/utils/fmgr/funcapi.c b/src/backend/utils/fmgr/funcapi.c index 8632b1a2963..9ce5fa9f6be 100644 --- a/src/backend/utils/fmgr/funcapi.c +++ b/src/backend/utils/fmgr/funcapi.c @@ -236,6 +236,38 @@ get_expr_result_type(Node *expr, NULL, resultTypeId, resultTupleDesc); + else if (expr && IsA(expr, RowExpr) && + ((RowExpr *) expr)->row_typeid == RECORDOID) + { + /* We can resolve the record type by generating the tupdesc directly */ + RowExpr *rexpr = (RowExpr *) expr; + TupleDesc tupdesc; + AttrNumber i = 1; + ListCell *lcc, + *lcn; + + tupdesc = CreateTemplateTupleDesc(list_length(rexpr->args)); + Assert(list_length(rexpr->args) == list_length(rexpr->colnames)); + forboth(lcc, rexpr->args, lcn, rexpr->colnames) + { + Node *col = (Node *) lfirst(lcc); + char *colname = strVal(lfirst(lcn)); + + TupleDescInitEntry(tupdesc, i, + colname, + exprType(col), + exprTypmod(col), + 0); + TupleDescInitEntryCollation(tupdesc, i, + exprCollation(col)); + i++; + } + if (resultTypeId) + *resultTypeId = rexpr->row_typeid; + if (resultTupleDesc) + *resultTupleDesc = BlessTupleDesc(tupdesc); + return TYPEFUNC_COMPOSITE; + } else { /* handle as a generic expression; no chance to resolve RECORD */ |