SQL獲取新插入行的標識數

對數據庫操作時，需要保留剛插入的新行的標識列以備後用，下面是用SQL語句實現方法：

private SqlConnection connection;

//連接字符串

this.connection = new SqlConnection();

this.connection.ConnectionString =

                       @"Data Source=.;Initial Catalog=DBDemo;Persist Security Info=True;User ID=sa;Password=123";

this.connection.Open();

 

//SQL語句

SqlCommand command = new SqlCommand();

command.Connection = this.connection;

command.CommandType = CommandType.Text;

string sql = string.Format(

                            "insert into ……");

command.CommandText = sql;

 

//執行SQL語句

command.ExecuteNonQuery();

 

//獲取標識列的SQL語句

string sequel = "SELECT @@IDENTITY"; //主要是這句

SqlCommand comm = new SqlCommand();

comm.Connection = this.connection;

comm.CommandType = CommandType.Text;

comm.CommandText = sequel;

 

//執行SQL語句，獲取新插入行的標識列

object id = comm.ExecuteScalar();

 

介紹@@IDENTITY的文章可以從下面找到

http://baike.baidu.com/view/1592444.htm