使用like查询text类型字段

使用like查询text类型字段

        public bool Exists(GetReadType GRT, ClientMessageGetRead TypeID, string MessageID, string UserID)
        {
            int ThisGRT = Convert.ToInt32(GRT);
            int ThisTypeID = Convert.ToInt32(TypeID);
            string strSql = @"
                            select
                                count(1)
                            from
                                Client_Message_GetRead
                            where
                                GetRead = @GetRead
                            and
                                TypeID = @TypeID
                            and
                                MessageID like '%'+@MessageID+'%'
                            and
                                UserID = @UserID
                            ";
 
            SqlParameter[] parameters = {
                    new SqlParameter("@GetRead", SqlDbType.Int,),
                    new SqlParameter("@TypeID", SqlDbType.Int,),
                    new SqlParameter("@MessageID", SqlDbType.Char,),
                    new SqlParameter("@UserID", SqlDbType.Char,)
                                        };
            parameters[].Value = ThisGRT;
            parameters[].Value = ThisTypeID;
            parameters[].Value = MessageID;
            parameters[].Value = UserID;
 
            return DbHelperSQL.Exists(strSql.ToString(), parameters);
        }
 
        public DataSet NotExists1(GetReadType GRT, string CompanyID, string UserID)
        {
            int ThisGRT = Convert.ToInt32(GRT);
            int ThisTypeID = Convert.ToInt32(ClientMessageGetRead.公益团体消息);
            string strSql = @"
                            select
                                *
                            from
                                Company_Company_Message
                            where
                                CompanyID = @CompanyID
                            and
                            (
                            select
                                top 1 MessageID
                            from
                                Client_Message_GetRead
                            where
                                GetRead = @GetRead
                            and
                                TypeID = @TypeID
                            and
                                UserID = @UserID
                            )
                            not like '%'+MessageID +'%'
                            ";
 
            SqlParameter[] parameters = {
                    new SqlParameter("@GetRead", SqlDbType.Int,),
                    new SqlParameter("@TypeID", SqlDbType.Int,),
                    new SqlParameter("@CompanyID", SqlDbType.Char,),
                    new SqlParameter("@UserID", SqlDbType.Char,)
                                        };
            parameters[].Value = ThisGRT;
            parameters[].Value = ThisTypeID;
            parameters[].Value = CompanyID;
            parameters[].Value = UserID;
 
            return DbHelperSQL.Query(strSql.ToString(), parameters);
        }