plpgsql 函数定义

 --Function: dbo.fn_test(integer)

 --DROP FUNCTION dbo.fn_test(integer);

 CREATE OR REPLACE FUNCTION dbo.fn_test
 (
   IN  p_count  integer = 0
 )
 RETURNS TABLE
 (
   id   integer,
   des  text
 )
 AS
 $$
 declare
   i integer;
   top integer;
   rec record;
 begin
   /* Insert real code here */
   select into rec * from dbo.a_org_type order by id desc limit 1;
   i := rec.id + 1;
   top := i + p_count;

   while i < top loop
     insert into dbo.a_org_type(id, des)
     values(i, 'shang hai ' || i);
     i:= i+1;
   end loop;

   return query select * from dbo.a_org_type order by id desc limit 10;
 end;
 $$
 LANGUAGE 'plpgsql';

 ALTER FUNCTION dbo.fn_test(integer)
   OWNER TO postgres;