oracle - Oracle.DataAccess 执行非查询的返回值(存储过程)

Question

返回值对于 UPDATE、INSERT 和 DELETE 语句，返回值是受命令影响的行数。对于 CREATE TABLE 和 DROP TABLE 语句，返回值为 0。对于所有其他类型的语句，返回值为 -1。

这就是微软文档中关于该函数返回值的说明...这是否意味着如果我调用存储过程，它将返回 -1？

要明确的是，我应该期望从存储过程的成功执行中收到什么返回值，或者如果存储过程由于某种原因未能执行......

我确信它会抛出某种错误，但是是否有一个实例它不会执行并且会给我一个返回值？

Answer 1

无论 sp 执行什么操作，它都会为存储过程返回 -1(非常容易测试)

create procedure test1 as 
begin
    null ; --do nothing
end test1 ;
/

create table testtable(a number);
/

create procedure test2 as
begin
    insert into testtable(a) select level from dual connect by level < 5;
end test2  ;
/

create procedure test3 as
begin
    update testtable set a = a-1;
end test3;
/

create procedure test4 as
begin
    delete testtable;
end test4;
/

<小时/>

        static int executeProc(string procName,OracleConnection connection ){
                OracleCommand cmd= new OracleCommand(procName, connection);
                cmd.CommandType = CommandType.StoredProcedure;
                return cmd.ExecuteNonQuery();                   
        }
        static void Main(string[] args)
        {
            Console.WriteLine("what does ExecuteNonQuery return?");
            // Connect
            string connectStr = getConnection();
            OracleConnection connection = new OracleConnection(connectStr);
            connection.Open();
            try{
            Console.WriteLine("test1 =>" + executeProc("test1",connection));
            Console.WriteLine("test2 =>" + executeProc("test2",connection));
            Console.WriteLine("test3 =>" + executeProc("test3",connection));
            Console.WriteLine("test4 =>" + executeProc("test4",connection));
            }
            catch (Exception e){
                Console.WriteLine(e.Message);
            }
            Console.WriteLine("Done");
        }

<小时/>

what does ExecuteNonQuery return?
test1 =>-1
test2 =>-1
test3 =>-1
test4 =>-1

<小时/>

/*
drop table testtable;
drop procedure test1;
drop procedure test2;
drop procedure test3;
drop procedure test4;
*/

引用: http://download.oracle.com/docs/cd/E11882_01/win.112/e18754/OracleCommandClass.htm#i998363 http://forums.oracle.com/forums/thread.jspa?threadID=636182