如何在 PostgreSQL 中創建過程並調用/執行

Question

如何在 PostgreSQL 中創建過程並調用/執行

Answer 1

要返回結果“表”，請使用 function 而不是過程：

create function Proc_StudentLogin(Sid bigint)
  returns setof students
as
$Body$
  select * from students where id = sid;
$Body$
language sql
stable;

-- Use function:
select * 
from Proc_StudentLogin(1);

Answer 2

--Create Procedure

Create procedure Proc_StudentLogin(

Sid bigint,

inout get_result refcursor)

Language 'plpgsql'

AS $Body$

Begin

open get_result for 

Select * from Students where id = sid;

End

$Body$;



--Call procedure

Call Proc_StudentLogin(1,'result');

fetch all in "result";