China 20 E 504`Select gender,COUNT(*) from Employee GroupBY gender Select country,COUNT(*) from Employee Group BY country Select age,COUNT(*) from EmployeeGroup BY age
有没有办法在一次选择中就能做到?提前感谢并为我糟糕的英语道歉
我有以下LINQ查询,它将按列分组,并将每个组添加到dataset的datatable中:Dim query = From r In bookedordersGroup By key = r.Field(Of Integer)("productgroup") Into Group Dim x As NewDataTable
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