Database CPU spikes when loading aggregates with multiple navigation properties. How can split queries alleviate SQL Server plan bloat?

.NET interview question for Advanced practice.

Answer

Append .AsSplitQuery() to the heavy query so EF issues one statement per include chain. SQL Server now produces manageable plans instead of giant cross joins, preventing tempdb blow-ups. Measure latency to ensure the extra trips are acceptable.

Explanation

Split queries trade an extra round-trip or two for dramatically simpler SQL.

Related Questions