1
Im从表中获取代码列表及其各自的计数。我不需要在SQL中使用独特的,但如果我不不要在LINQ查询中添加这个,我得到许多重复行。为什么我需要使用此LINQ查询来区分,但不使用SQL
那么,为什么我需要在LINQ查询上的不同调用?
SQL
SELECT COUNT(*) AS ServiceCodeCnt, d.ServiceCode
FROM dbo.BackOrderItem d
GROUP BY d.ServiceCode, d.Model
HAVING d.Model ='UUTTIISJWW'
LINQ(通过LINQpad)
void Main()
{
var retval = (from a in BackOrderItems where a.Model == "UUTTIISJWW"
group a by new {a.ServiceCode, a.Model} into grp1
from b in grp1
select new {Code = b.ServiceCode, Count = grp1.Count() }).ToList().Distinct();
retval.Dump();
}
是的,就是这样,谢谢 – bitshift