Expert Tips for Interviews & Certifications
Fast, reliable Apex leans on three pillars: relationship queries, aggregate SOQL, and thoughtful subqueries—while steering clear of N+1 patterns. Nail these and your code stays bulkified, selective, and governor-limit friendly. Relationship SOQL (child → parent): follow lookups with dot notation Concept: Pull fields from a parent record in the same...
If you want blazing-fast SOQL, your filters have to be selective. In practice, that means your WHERE clause narrows things enough for Salesforce to rely on an index. Use the Query Plan tool to see what the optimizer intends to do and shape your filters to hit standard, custom, or...