Match employees with same salary?

Short answer: Match employees with same salary var duplicates = employees .GroupBy(e => e.Salary) .Where(g => g.Count() > 1) .SelectMany(g => g); Match employees with same salary var duplicates = employees .GroupBy(e => e.Salary) .Where(g => g.Count() > 1) .SelectMany(g => g); Match employees with same salary var duplicates = employees .GroupBy(e => e.Salary) .Where(g =>… g.Count() > 1) .SelectMany(g => g); Match employees with…

Explain a bit more

same salary var duplicates = employees .GroupBy(e => e.Salary) .Where(g => g.Count() > 1) .SelectMany(g => g);

Real-world example (ShopNest)

ShopNest uses LINQ to query orders: filter by date, project to a summary DTO, and order by total—readable C# that becomes SQL under EF Core.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.