ApexIntermediateaggregatesoqlreporting
Use AggregateResult and GROUP BY efficiently in reporting Apex
Real World Scenario
Executive dashboard Apex aggregates Opportunity amounts by region but hits query row limit.
Expected Answer
• Push aggregation to SOQL GROUP BY not Apex loops
• Filter selective date range on indexed CloseDate
• AggregateResult iterate for grouped sums counts
• Roll-up summary fields where possible avoiding query entirely
• CRM Analytics for heavy aggregates instead of real-time Apex
• Cache aggregate results with TTL for dashboard
• Query only grouped fields not full records
Follow-Up Questions & Answers
Click to expand — each follow-up includes a direct, interview-ready answer
Stay within limits by: Push aggregation to SOQL GROUP BY not Apex loops. Bulkify everything — never query or DML in loops. AggregateResult iterate for grouped sums counts. If you loop records to sum in Apex, you already lost—GROUP BY or roll-up first. Balance speed of delivery with maintainability.
Architect Perspective
If you loop records to sum in Apex, you already lost—GROUP BY or roll-up first.