摘要:
var result = from u in db.Order join n in db.Equipment on u.OrderId equals n.OrderId into temp from m in temp.DefaultIfEmpty() select new { OrderID = 阅读全文
摘要:
在项目中发现有这样的写法 SELECT ZoneID,CountSQAZFZSBJZ3G+CountSQGZJRJZSL3G AS column1FROM G3MulticarrierSiteCoverTableFrm union SELECT 合计 as ZoneID,sum(CountSQAZF 阅读全文