IEntityObject EntityObj = SqlHelper.GetEntityObject();
            COMMONEntities PubDb = (COMMONEntities)EntityObj.GetDataModel(SystemType.H0);
            MZYSEntities MzDb = (MZYSEntities)EntityObj.GetDataModel(SystemType.HH);

            var query = from q in MzDb.OUTP_JZJLK.Where("it.JLZT==true")
                        where q.GHRQ.StartsWith(_StrCxrq)
                        select q;
            var wwwww = from a in query.ToList()
                        select a.PATID;
            decimal[] ww = new decimal[wwwww.ToArray().Length];
            ww = wwwww.ToArray();
            var query1 = from a in query.ToList()
                         from b in PubDb.PUB_MZBRXXK
                         where ww.Contains(b.PATID)
                         select new{....}

问题：query里面有4000行数据，表PubDb.PUB_MZBRXXK里面有100W行数据，现在要在表PubDb.PUB_MZBRXXK中找出上述4000行数据的信息库。。