我花了几个小时尝试将简单的 SQL 转换为 lambda LINQ
SELECT ID, AVG(Score) FROM myTable
GROUP BY ID
任何想法？
from t in myTable
group t by new {
t.ID
} into g
select new {
Average = g.Average(p => p.Score),
g.Key.ID
}
or Lambda
myTable.GroupBy(t => new {ID = t.ID})
.Select (g => new {
Average = g.Average (p => p.Score),
ID = g.Key.ID
})
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