查询

Linq

var indexList = new long[] { 1, 2, 3};
List<long> list = new List<long>();
if (String.IsNullOrWhiteSpace(request.Key) == false)
{var ret = from aa in _db.TblAAjoin bb in _db.TblBBon aa.PId equals bb.Idjoin cc in _db.TblCCon aa.CId equals cc.Idjoin dd in _db.TblDDon bb.Id equals dd.DIdwhere ((cc.Content.IndexOf(request.Key) != -1) && (indexList.Contains(cc.CTId)))select bb.Id;if (ret.Count() > 0){foreach (var item in ret){list.Add(item);}}
}
if (list.Count() > 0)
{string retStr = string.Join(",", list.Distinct());resp.IdListStr = retStr;
}

Raw SQL

 string sql = "select A.* from tbl_AA A left join tbl_AA_BB_assoc B on A.id = B.Bid where ";if (string.IsNullOrWhiteSpace(req.Name)){sql += "(name like '%%' or name is NULL) ";}else{sql += "(name like '%" + req.Name + "%')";}var AA = _db.Tbl_AA.FromSqlRaw(sql).ToList();

List<TblP> tblPList = new List<TblP>();
var PList2 = _db.TblPs.Where(p=>p.A == request.A && p.B == request.B).ToList();if ((request.DCCId!=null) && (request.DCCId > 0))
{PList2 = PList2.Where(p => p.DCCId == request.DCCId).ToList();
} 
if (PList2.Count > 0)
{tblPList.AddRange(PList2);
}