如何创建存储过程

Question

如何为此C＃语句创建存储过程

String Orders = "INSERT INTO Orders VALUES('" + DDLCustomerID.SelectedValue + "','" + Convert.ToInt32(TxtNetPrice.Text) + "');" + " SELECT SCOPE_IDENTITY();";
SqlCommand command = new SqlCommand(Orders, Connection);
command.CommandType = CommandType.Text;

Connection.Open();
int intID = Convert.ToInt32(command.ExecuteScalar());

String Orderdetails1 = "INSERT INTO OrderDetails VALUES(" + intID + ",'" + DDLProduct1.SelectedItem + "','" + Convert.ToInt32(TxtPrice1.Text) + "','" + Convert.ToInt32(TxtQuantity1.Text) + "','" + Convert.ToInt32(TxtTotalPrice1.Text) + "')";
SqlCommand Command1 = new SqlCommand(Orderdetails1, Connection);
Command1.CommandType = CommandType.Text;
Command1.ExecuteNonQuery();

String Orderdetails2 = "INSERT INTO OrderDetails VALUES(" + intID + ",'" + DDLProduct2.SelectedItem + " ','" + Convert.ToInt32(TxtPrice2.Text) + "','" + Convert.ToInt32(TxtQuantity2.Text) + "','" + Convert.ToInt32(TxtTotalPrice2.Text) + "')";
SqlCommand Command2 = new SqlCommand(Orderdetails2, Connection);
Command2.CommandType = CommandType.Text;
Command2.ExecuteNonQuery();

String Orderdetails3 = "INSERT INTO OrderDetails VALUES(" + intID + ",'" + DDLProduct3.SelectedItem + " ','" + Convert.ToInt32(TxtPrice3.Text) + "','" + Convert.ToInt32(TxtQuantity3.Text) + "','" + Convert.ToInt32(TxtTotalPrice3.Text) + "')";
SqlCommand Command3 = new SqlCommand(Orderdetails3, Connection);
Command3.CommandType = CommandType.Text;
Command3.ExecuteNonQuery();

Response.Write("<script>alert('Successfully Inserted');</script>");
Connection.Close();

如何为此c＃语句创建存储过程我在SQL SERVER中创建的表是

CREATE TABLE Customers
(
     CustomerID INT IDENTITY(1, 1) PRIMARY KEY,
     FirstName  NVARCHAR(45),
     LastName   NVARCHAR(45),
     Address    NVARCHAR(45)
)

CREATE TABLE Orders
(
    OrderID    INT IDENTITY(1, 1) PRIMARY KEY,
    CustomerID INT FOREIGN KEY REFERENCES Customers(CustomerID),
    TotalPrice  INT
)

CREATE TABLE OrderDetails
(
    OrderID     INT FOREIGN KEY REFERENCES Orders(OrderID),
    ProductName NVARCHAR(45),
    Quantity    NVARCHAR(45),
    Price       NVARCHAR(45),
    TotalPrice  INT
)

我想为此语句创建一个存储过程

Answer 1

这是您需要编写的SQL代码：

存储过程的语法：

Create Proc Proc_Name
(
  @PARAM1 DATATYPE,
  ....
)
AS
BEGIN
   BODY OF THE SP
END

这是在SQL中创建存储过程的方法。 由于您有一堆查询，因此一次执行即可。 您还需要处理您的交易。 如果假设您的最后一个插入查询获得了EXCEPTION那么您首先需要对所有查询进行回滚，而不应执行这些查询。 我还完成了存储过程中的回滚。

    CREATE PROC Procedure_Name
(
    @Customer_id INT,
    @TxtNetPrice FLOAT,
    @DDLProduct1 INT,
    @TxtQuantity1 FLOAT,
    @TxtTotalPrice1 FLOAT,
    @TxtPrice1 FLOAT,
    @intID INT
)
AS
BEGIN

    SET NOCOUNT ON


    BEGIN TRY
    BEGIN TRANSACTION
        INSERT INTO Orders VALUES(@Customer_id,@TxtNetPrice)
        DECLARE @S_ID int;
        SET @S_ID  = (SELECT SCOPE_IDENTITY())

        INSERT INTO 
            OrderDetails 
        VALUES(@intID,@DDLProduct1,@TxtPrice1,@TxtQuantity1,@TxtTotalPrice1)

    COMMIT
    END TRY

    BEGIN CATCH 

              DECLARE @ERROR_MSG NVARCHAR(MAX), @SEVERITY INT, @STATE INT
              SELECT @SEVERITY = ERROR_SEVERITY(), @STATE = ERROR_STATE()
              , @ERROR_MSG = ERROR_MESSAGE() + ' err src line: ' + CAST( ERROR_LINE() AS NVARCHAR(20)) + ' ' + ISNULL(ERROR_PROCEDURE(), '');           
               --@ERROR_MSG = ERROR_MESSAGE()
                ROLLBACK;
             -- RE-THROW EXCEPTION FOR DIAGNOSTIC VISIBILITY
              RAISERROR (@ERROR_MSG ,@SEVERITY, @STATE);        
              RETURN

    END CATCH   

END