如何执行pl/sql过程

Question

程序：

create or replace 
PROCEDURE ADDITION 
(
  A IN NUMBER  
, B IN NUMBER  
, C OUT number
) AS 
BEGIN
  C := A+B;
  dbms_output.put_line(c);
END ADDITION;

执行：

begin
 addition(4,5);
end;

错误：

PLS-00306: wrong number or types of arguments in call to 'ADDITION'
ORA-06550: line 2, column 2:
PL/SQL: Statement ignored
06550. 00000 -  "line %s, column %s:\n%s"
*Cause:    Usually a PL/SQL compilation error.
*Action:

如何纠正这个错误。让我知道代码有什么问题

Answer 1

您的过程需要一个 out 参数，您还需要提供该参数：

declare
 add_result number;
begin
 addition(4,5,add_result);
end;
/