如何使用存储过程在 SQL 中插入多行? [英] How to insert a multiple rows in SQL using stored procedures?

问题描述

我能够在单个语句中插入项目，但我想要做的是使用存储过程获得另一个版本.我怎么做.这是我的代码:

I'm able to insert the the items in a single statement but what I want to do is to have another version using a Stored Procedures. How do I do that. Here's my code:

    private void button1_Click(object sender, EventArgs e)
        {
#region Get Values

            string[] array = {textBox1.Text+":"+textBox5.Text,textBox2.Text+":"+textBox6.Text,textBox3.Text+":"+textBox7.Text,textBox4.Text+":"+textBox8.Text};
            string query = "";
            string product = "";
            int qty = 0;
            for (int i = 0; i < array.Length; i++ )
            {
                product = array[i].ToString().Substring(0,array[i].ToString().IndexOf(':'));
                qty = int.Parse(array[i].ToString().Substring(array[i].ToString().IndexOf(':')+1));
                if (string.IsNullOrEmpty(query))
                {
                    query = "Insert Into MySampleTable Values ('"+product+"','"+qty+"')";
                }
                else
                {
                    query += ",('" + product + "','" + qty + "')";
                }


            }

#endregion

            string connect = "Data Source=RANDEL-PC;Initial Catalog=Randel;Integrated Security=True";
            SqlConnection connection = new SqlConnection(connect);
            connection.Open();
            string insert = query;
            SqlCommand command = new SqlCommand(query,connection);
            command.ExecuteNonQuery();
            command.Dispose();
            connection.Close();
            connection.Dispose();
            label5.Visible = true;
            label5.Text = insert;
        }
    }

先生/女士，您的回答会很有帮助，我们将不胜感激.谢谢++

Sir/Ma'am, Your answers would be of great help and be very much appreciated. Thank you++

推荐答案

在 SQL Server 2008+ 中，有更简单的方法可以在单个语句中插入多行.例如这个语法是有效的:

In SQL Server 2008+ there are easier ways to insert multiple rows in a single statement. For example this syntax is valid:

INSERT dbo.table(col1, col2) VALUES
    (1, 2),
    (2, 3),
    (3, 4);

上面会插入三行.在旧版本上，您可以执行稍微详细一些的操作，例如:

The above will insert three rows. On older versions you can do slightly more verbose things such as:

INSERT dbo.table(col1, col2)
 SELECT 1, 2
  UNION ALL SELECT 2, 3
  UNION ALL SELECT 3, 4;

当然，您的 ExecuteNonQuery 不必是单个命令，您可以将其作为单个字符串传递，它仍然可以工作:

Of course your ExecuteNonQuery does not have to be a single command, you can pass this as a single string and it will still work:

INSERT dbo.table(col1, col2) VALUES(1, 2);
INSERT dbo.table(col1, col2) VALUES(2, 3);
INSERT dbo.table(col1, col2) VALUES(3, 4);

如果您想在存储过程中执行此操作，您可以轻松地对多值参数执行拆分，例如，如果您传入以下字符串:

If you want to do this in a stored procedure, you can easily perform a split on multi-valued parameters, for example if you pass in the following string:

1,2;2,3;3,4

您可以使用我在此处发布的函数来处理这些值:

You could process those values using a function like the one I posted here:

使用 UDF 拆分值对和创建表

因此您的程序可能如下所示:

So your procedure might look like this:

CREATE PROCEDURE dbo.AddOrderLineItems
    @LineItems VARCHAR(MAX)
AS
BEGIN
    SET NOCOUNT ON;

    INSERT dbo.OrderItems(Product, Quantity)
      SELECT Product, Quantity FROM dbo.MultiSplit(@LineItems);
END
GO

你会使用 C# 等价物来调用它:

And you would call it using the C# equivalent of:

EXEC dbo.AddOrderLineItems @LineItems = '1,2;2,3;3,4';

或者您可以使用 Alexey 建议的表值参数.一个简单的例子:

Or you could use table-valued parameters as suggested by Alexey. A quick example:

CREATE TYPE OrderLineItem AS TABLE
(
  Product INT,
  Quantity INT
);

然后你可以创建一个程序:

Then you can create a procedure:

CREATE PROCEDURE dbo.AddOrderLineItems
    @LineItems OrderLineItem READONLY
    -- other parameters
AS
BEGIN
    SET NOCOUNT ON;

  INSERT dbo.OrderItems(Product, Quantity) 
  SELECT Product, Quantity FROM @LineItems;
END
GO

然后在您的 C# 代码中创建等效的 TVP(我不是您想要这样做的人；您可以看到 此处示例).

Then create the equivalent TVP in your C# code (I'm not the guy you want doing that; you can see an example here).

但是有一些警告，请看这个问题:

However there are some caveats, please look at this question:

创建通用类型以用作一个表值参数

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