支持pipe row语法
vastbase=# CREATE OR REPLACE FUNCTION test()
vastbase-# RETURN int
vastbase-# PIPELINED
vastbase-# AS
vastbase$# DECLARE
vastbase$# result RECORD;
vastbase$# row RECORD;
vastbase$# BEGIN
vastbase$# pipe row(1);
vastbase$# pipe row(2);
vastbase$# return;
vastbase$# END;
vastbase$# /
CREATE FUNCTION
vastbase=# select * from table(test());
test
------
1
2
(2 rows)
