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嗨我想在我的web api中將TSQL轉換爲Linq,但我沒有得到正確的結果。 我現有的TSQL是:如何獲得Linq返回計數作爲列上的分組查詢
SELECT COUNT(a.Id) as total ,c.Name as classroom
From Attendance a INNER JOIN Classroom c ON a.classroom = c.Id
WHERE DropDate= '20160815'
GROUP BY c.Name
我試圖轉換爲LINQ一直低於:
這是更新LINQ(回答西拉傑·曼蘇爾)
var name = (from a in dbContext.attendances
join c in dbContext.classrooms on a.Classroom equals c.Id
let classroom = c.Name
where (a.DropDate == today)
group a.Classroom by c.Name into g
select new
{
classroom = g.Key,
total = g.Count()
});
但問題它是不會帶回相同的數據,併爲每個教室返回500個總計。如果有人可以請讓我知道我在這做什麼不正確。
謝謝你做到了。我已在下面更新了我的答案。 – snowflakes74