获取存储过程返回值及代码中获取返回值

1.OUPUT参数返回值
例： 向Order表插入一条记录,返回其标识



CREATE PROCEDURE [dbo].[nb_order_insert](


@o_buyerid int ,


@o_id bigint OUTPUT


)


AS


BEGIN


SET NOCOUNT ON;


BEGIN


INSERT INTO [Order](o_buyerid )


VALUES (@o_buyerid )


SET @o_id = @@IDENTITY


END


END

存储过程中获得方法：


DECLARE @o_buyerid int


DECLARE @o_id bigint


EXEC [nb_order_insert] @o_buyerid ,o_id bigint

[b]2.RETURN过程返回值

[/b]


CREATE PROCEDURE [dbo].[nb_order_insert](


@o_buyerid int ,


@o_id bigint OUTPUT


)


AS


BEGIN


SET NOCOUNT ON;


IF(EXISTS(SELECT * FROM [Shop] WHERE [s_id] = @o_shopid))


BEGIN


INSERT INTO [Order](o_buyerid )


VALUES (@o_buyerid )


SET @o_id = @@IDENTITY


RETURN 1 — 插入成功返回1


END


ELSE


RETURN 0 — 插入失败返回0


END

存储过程中的获取方法


DECLARE @o_buyerid int


DECLARE @o_id bigint


DECLARE @result bit


EXEC @result = [nb_order_insert] @o_buyerid ,o_id bigint

3.SELECT 数据集返回值




CREATE PROCEDURE [dbo].[nb_order_select](


@o_id int


)


AS


BEGIN


SET NOCOUNT ON;


SELECT o_id,o_buyerid FROM [Order]


WHERE o_id = @o_id


GO

存储过程中的获取方法
（1）、使用临时表的方法


CREATE TABLE [dbo].[Temp](


[o_id] [bigint] IDENTITY(1,1) NOT FOR REPLICATION NOT NULL,


[o_buyerid] [int] NOT NULL


)


INSERT [Temp] EXEC [nb_order_select] @o_id


– 这时 Temp 就是EXEC执行SELECT 后的结果集


SELECT * FROM [Temp]


DROP [Temp] — 删除临时表

（2）、速度不怎么样.（不推荐）


SELECT * from openrowset(’provider_name','Trusted_Connection=yes’,'exec nb_order_select’)

1.获取Return返回值





程序代码
//存储过程
//Create PROCEDURE MYSQL
// @a int,
// @b int
//AS
// return @a + @b
//GO
SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["LocalSqlServer"].ToString());
conn.Open();
SqlCommand MyCommand = new SqlCommand("MYSQL", conn);
MyCommand.CommandType = CommandType.StoredProcedure;
MyCommand.Parameters.Add(new SqlParameter("@a", SqlDbType.Int));
MyCommand.Parameters["@a"].Value = 10;
MyCommand.Parameters.Add(new SqlParameter("@b", SqlDbType.Int));
MyCommand.Parameters["@b"].Value = 20;
MyCommand.Parameters.Add(new SqlParameter("@return", SqlDbType.Int));
MyCommand.Parameters["@return"].Direction = ParameterDirection.ReturnValue;
MyCommand.ExecuteNonQuery();
Response.Write(MyCommand.Parameters["@return"].Value.ToString());

2.获取Output输出参数值


程序代码
//存储过程
//Create PROCEDURE MYSQL
// @a int,
// @b int,
// @c int output
//AS
// Set @c = @a + @b
//GO
SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["LocalSqlServer"].ToString());
conn.Open();
SqlCommand MyCommand = new SqlCommand("MYSQL", conn);
MyCommand.CommandType = CommandType.StoredProcedure;
MyCommand.Parameters.Add(new SqlParameter("@a", SqlDbType.Int));
MyCommand.Parameters["@a"].Value = 20;
MyCommand.Parameters.Add(new SqlParameter("@b", SqlDbType.Int));
MyCommand.Parameters["@b"].Value = 20;
MyCommand.Parameters.Add(new SqlParameter("@c", SqlDbType.Int));
MyCommand.Parameters["@c"].Direction = ParameterDirection.Output;
MyCommand.ExecuteNonQuery();
Response.Write(MyCommand.Parameters["@c"].Value.ToString());

C#[b]接收存储过程返回值:[/b]

public static int User_Add(User us)
{
int iRet;
SqlConnection conn = new SqlConnection(Conn_Str);
SqlCommand cmd = new SqlCommand("User_Add", conn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@UName", us.UName);
cmd.Parameters.AddWithValue("@UPass", us.UPass);
cmd.Parameters.AddWithValue("@PassQuestion", us.PassQuestion);
cmd.Parameters.AddWithValue("@PassKey", us.PassKey);
cmd.Parameters.AddWithValue("@Email", us.Email);
cmd.Parameters.AddWithValue("@RName", us.RName);
cmd.Parameters.AddWithValue("@Area", us.Area);
cmd.Parameters.AddWithValue("@Address", us.Address);
cmd.Parameters.AddWithValue("@ZipCodes", us.ZipCodes);
cmd.Parameters.AddWithValue("@Phone", us.Phone);
cmd.Parameters.AddWithValue("@QQ", us.QQ);
cmd.Parameters.Add("@RETURN_VALUE", "").Direction = ParameterDirection.ReturnValue;
try
{
conn.Open();
cmd.ExecuteNonQuery();
iRet = (int)cmd.Parameters["@RETURN_VALUE"].Value;
}
catch (SqlException ex)
{
throw ex;
}
finally
{
conn.Close();
}
return iRet;
}
C#[b]接收存储过程输出参数:[/b]

public static decimal Cart_UserAmount(int UID)
{
decimal iRet;
SqlConnection conn = new SqlConnection(Conn_Str);
SqlCommand cmd = new SqlCommand("Cart_UserAmount", conn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@UID", UID);
cmd.Parameters.Add("@Amount", SqlDbType.Decimal).Direction=ParameterDirection.Output;
try
{
conn.Open();
cmd.ExecuteNonQuery();
iRet = (decimal)cmd.Parameters["@Amount"].Value;
}
catch (SqlException ex)
{
throw ex;
}
finally
{
conn.Close();
}
return iRet;
}