Function resultForEmptyIter

pgserver/duck_handler.go:688–697

resultForEmptyIter ensures that an expected empty iterator returns no rows.

(ctx *sql.Context, iter sql.RowIter)

		rows, schema, err = queryCatalogWithJSONScan(ctx, query, vars...)
		if err != nil {
			break
		}
		iter, err = NewSqlRowIter(rows, schema)
		if err != nil {
			rows.Close()
			break
		}
	case duckdb.STATEMENT_TYPE_CALL,
		duckdb.STATEMENT_TYPE_PRAGMA,
		duckdb.STATEMENT_TYPE_EXPLAIN:
		rows, err = adapter.QueryCatalog(ctx, query, vars...)
		if err != nil {
			break