Question

我在asp.net和c＃中创建了一个项目，我在SQL Server中一个接一个地写了10个更新查询

我在多个表上执行查询，这些表与每个表相似但不完全相似

有一些更新语句不适用于某些表，所以我想忽略该错误并执行其他查询并获得最终输出是否有可能

如果是，请帮助我

Answer 1

我会创建一个包含所有更新语句的存储过程，每个更新语句都包含在TRY..CATCH块中。

这应该是这样的：

CREATE PROCEDURE [MyProc]
AS
BEGIN
TRY
    BEGIN
    [STATEMENT 1]
    END
CATCH
    BEGIN
    [DO SOMETHING... OR NOT]
    END

TRY
    BEGIN
    [STATEMENT 2]
    END
CATCH
    BEGIN
    [DO SOMETHING... OR NOT]
    END

TRY
    BEGIN
    [STATEMENT 3]
    END
CATCH
    BEGIN
    [DO SOMETHING... OR NOT]
    END

(...and so on)
END

Answer 2

你可以这样做，

    try
{

//get values from text boxes for values you want to update in a string array queryarr
//here it has 4 fields id, name, address and tablename.

for(int i=0; i<5; i++)
{
  try
  {
    string connectionString =
        "server=myown;" +
        "initial catalog=something;" +
        "user id=somebody;" +
        "password=secret";
    using (SqlConnection conn = new SqlConnection(connectionString))
    {
        conn.Open();
        using (SqlCommand cmd =
            new SqlCommand("UPDATE "+queryarr[i,4]+"  SET Name=@NewName, Address=@NewAddress" +
                " WHERE Id=@Id", conn))
        {
            cmd.Parameters.AddWithValue("@Id", queryarr[i,0]);
            cmd.Parameters.AddWithValue("@Name", queryarr[i,1]);
            cmd.Parameters.AddWithValue("@Address", queryarr[i,2]);
            cmd.ExecuteNonQuery();

        }
    }
  }
   catch (SqlException ex)
  {
    //Log the exception but do not display any message.        
  } 

}
}
catch (Exception ex)
{
    //display error message

}

在SQL中执行多个Update语句，忽略某些查询中的错误

2 个答案: