ASP.NET使用MergeInto做数据同步，同步SQLSERVER不同数据库的相同表结构的数据

 

        public string SynchronousData()
        {
            ReturnJson Rejson = new ReturnJson();
　　　　　　　//将WebConfig中的数据库连接name中的值写进来
            string connS = ConfigurationManager.ConnectionStrings["name"].ConnectionString;
　　　　　　　using (SqlConnection conn = new SqlConnection(connectionSub))
            {
                conn.Open();
                using (SqlCommand cmd = conn.CreateCommand())
                {
                    try
                    {
                        cmd.CommandText = "存储过程名";
                        cmd.CommandType = CommandType.StoredProcedure;
                        var ReExcute = cmd.ExecuteNonQuery();
                        if (ReExcute >= 0)
                        {
                            conn.Close();
                            Rejson.Code = "1";
                            Rejson.Errmsg = "同步成功";
                            return ToJson(Rejson);
                        }
                        else
                        {
                            conn.Close();
                            Rejson.Code = "0";
                            Rejson.Errmsg = "同步失败";
                            return ToJson(Rejson);
                        }
                    }
                    catch
                    {
                        conn.Close();
                        Rejson.Code = "3";
                        Rejson.Errmsg = "未知异常";
                        return ToJson(Rejson);
                    }
                }
            }
        }

 

存储过程

Create PROCEDURE [存储过程名]
AS
BEGIN
MERGE INTO 目标数据表名 as T
USING 源数据表名 as S
ON T.[Id] = S.[Id]
WHEN MATCHED
THEN UPDATE SET T.[Name]=S.[Name]
WHEN NOT MATCHED
THEN INSERT VALUES(S.[Name])
WHEN NOT MATCHED BY SOURCE
THEN DELETE;
END