是否可以使用“返回"?在存储过程中?

问题描述

 CREATE PROCEDURE Pname(in_Tid IN VARCHAR2,in_IP IN VARCHAR2,outstaticip OUT VARCHAR2,outcount OUT NUMBER)
 AS
 BEGIN
 select STATIC_IP into outstaticip from OP_TTER_MAPPING where TERMINAL_ID = in_Tid;
 if in_IP = outstaticip then
 return 1;
 else
 select COUNT(*) into outcount from OP_TTER_MAPPING where DYNAMIC_IP_LOW <= in_IP AND   DYNAMIC_IP_HIGH >= in_IP AND TERMINAL_ID = in_Tid;
 if outcount = 1 then
 return 1;
 else
 return 0;
  end if;
 end if;
 END;

1. 可以像上面那样在存储过程中使用 return 吗?
2. 如果我们可以使用 return，我如何在 Executesql("begin Pname(----)END") 方法中获取返回值

1. Is it possible to use return in stored procedure like above?
2. If we can use return, how can i get that return value in Executesql("begin Pname(----)END") method

编辑

现在我像这样在存储过程中编辑了我的返回值，我做对了吗?

Now I edited my return value in stored procedure like this, am I doing it right ?

CREATE PROCEDURE P_ValidateTIDIP(in_Tid IN VARCHAR2,in_IP IN VARCHAR2,outstaticip OUT VARCHAR2,outcount OUT NUMBER,outretvalue OUT NUMBER)
AS
BEGIN
select STATIC_IP into outstaticip from OP_TTER_MAPPING where TERMINAL_ID = in_Tid;
if in_IP = outstaticip then
    outretvalue:=1;
else 
    select COUNT(*) into outcount from OP_TTER_MAPPING where DYNAMIC_IP_LOW <= in_IP AND DYNAMIC_IP_HIGH >= in_IP AND TERMINAL_ID = in_Tid;
    if outcount = 1 then 
     outretvalue:=1;
    else
     outretvalue:=0;
   end if;
end if;
END;

推荐答案

在存储过程中，您使用 OUT 参数 ONLY 返回值.正如您在示例中定义了两个变量:

In Stored procedure, you return the values using OUT parameter ONLY. As you have defined two variables in your example:

   outstaticip OUT VARCHAR2, outcount OUT NUMBER

只需将返回值分配给输出参数，即 outstaticip 和 outcount 并从调用位置返回它们.我的意思是:当您调用存储过程时，您也将传递这两个变量.存储过程调用后，变量将填充返回值.

Just assign the return values to the out parameters i.e. outstaticip and outcount and access them back from calling location. What I mean here is: when you call the stored procedure, you will be passing those two variables as well. After the stored procedure call, the variables will be populated with return values.

如果您希望 RETURN value 作为 PL/SQL 调用的返回值，则使用 FUNCTION.请注意，万一您只能返回一个变量作为返回变量.

If you want to have RETURN value as return from the PL/SQL call, then use FUNCTION. Please note that in case, you would be able to return only one variable as return variable.

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