sql到linq和2查询成1

问题描述

美好的一天。 我有2个请求。

SELECT cf.Conf_StartTime,cf.Conf_displayName,eve.Conf_ID,eve.Party_ID,eve.Point_NAME,eve.Ongoing_ID,COUNT(*) AS 'num'
FROM CDR_EVENT as eve INNER JOIN CDR_Conference as cf ON eve.Conf_ID = cf.Conf_ID 
WHERE TIMESTAMP >= '9/10/2020' AND TIMESTAMP <= '9/11/2020' AND Ongoing_ID IS NOT NULL
GROUP BY
cf.Conf_StartTime,eve.Ongoing_ID
HAVING COUNT (*) >= 2
ORDER BY eve.Conf_ID

GO

SELECT cf.Conf_StartTime,eve.disconnect_Cause_DESCRIPTION,COUNT(*) AS 'num'
FROM CDR_EVENT as eve INNER JOIN CDR_Conference as cf ON eve.Conf_ID = cf.Conf_ID 
WHERE TIMESTAMP >= '9/10/2020' AND TIMESTAMP <= '9/11/2020' AND disconnect_Cause_DESCRIPTION IS NOT NULL AND disconnect_Cause_ID != '2'
GROUP BY
cf.Conf_StartTime,disconnect_Cause_DESCRIPTION
HAVING COUNT (*) >= 1
ORDER BY cf.Conf_displayName

问题1.如何将它们转换为LINQ？

问题2。是否可以将这两个查询合并为一个？

解决方法

我认为我能够转换为LINQ，事实证明并不困难。 问题2仍然有效：）

var obj = from cdr in dataContext.CDR_EVENT
where (cdr.TIMESTAMP.Date >= dTimeStart.Date && cdr.TIMESTAMP.Date <= dTimeEnd.Date && 
cdr.Ongoing_ID != null)
group (cdr) by new {cdr.Conf_ID,cdr.Party_ID,cdr.Ongoing_ID,cdr.Point_NAME } into g
where g.Count() >=2
orderby g.Key.Party_ID
select new
{
   s1 = g.Key.Conf_ID,s2 = g.Key.Party_ID,s3 = g.Key.Ongoing_ID,s4 = g.Key.Point_NAME,s5 = g.Count()
};