Answer
Filtered indexes are ideal when:
- Queries target selective subsets
- Columns contain sparse values
- Large tables need optimized predicate performance
Quick Answer
Use filtered indexes when queries consistently target a predictable subset: active records (IsDeleted = 0), a specific status, or a regional subset. The index is smaller, statistics are more accurate for that subset, and seek performance is higher. Particularly effective when the indexed subset is a small percentage of the total rows.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ