C# Linq GroupBy 分组过滤求和
1 var delOrderData = orderLogList.Where(x => (x.OlStatus == 0 && x.OlUpId == null)).GroupBy(x => new { x.OlMenuId, x.OlMenuName, x.OlMenuCount }).Select(y => new 2 { 3 OlMenuId = y.Key.OlMenuId, 4 OlMenuCount = y.Sum(x => x.OlMenuCount), 5 OlMenuName = y.Key.OlMenuName 6 });
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