从sqlplus调用存储过程 [英] Call stored procedure from sqlplus

问题描述

如何从sqlplus调用存储过程?

How to call a stored procedure from sqlplus?

我有一个程序:

Create or replace procedure testproc(parameter1 in varachar2,parameter2 out varchar2)
begin

Do something

end;

我尝试了exec testproc(12,89) ::返回错误

I tried exec testproc(12,89) ::Returns error

推荐答案

过程的第二个参数是OUT参数－它的值将分配给过程完成时传递的变量.因此，您不能为此参数使用文字值.

The second parameter of your procedure is an OUT parameter -- its value will be assigned to the variable passed when the procedure completes. So you can't use a literal value for this parameter.

您可以在SQLPlus提示符下声明绑定变量，并使用该变量:

You can declare a bind variable at the SQLPlus prompt and use that:

-- Declare bind variable
VARIABLE x NUMBER

-- If necessary, initialize the value of x; in your example this should be unnecessary
-- since the value of the second parameter is never read
EXEC :x := 1

-- Call the procedure
EXEC testproc(12, :x)

-- Print the value assigned to the bind variable
PRINT x

或者，您可以使用匿名PL/SQL块:

Alternatively, you can use an anonymous PL/SQL block:

-- Activate client processing of dbms_output buffer
SET SERVEROUTPUT ON

-- In anonymous block, declare variable, call procedure, print resulting value
DECLARE
  x NUMBER;
BEGIN
  testproc(12, x);
  dbms_output.put_line( x );
END;
/

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