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“Monitor Query Store regressed queries” concerns Query Store captures a new high-cost plan; the reported problem instead is A single recommendation ignores write/storage cost. Monitor index usage and storage overhead.

Index-seek counts and write cost can reveal performance trade-offs, but the question specifically requires measurement of accumulated index storage overhead together with actual usage. The usage/storage pair in A covers both named metrics.

“Monitor version-store usage and long transactions” concerns Concurrent updates produce inconsistent intermediate totals; the reported problem instead is A single recommendation ignores write/storage cost. Monitor index usage and storage overhead.

“Inspect actual plans, existing overlapping indexes and workloads” concerns A single recommendation ignores write/storage cost; the reported problem instead is Outdated statistics misestimate filtered cardinality. Compare statistics age and actual-versus-estimated rows.

“Compare plans, duration and deployment timestamp” concerns Query Store captures a new high-cost plan; the reported problem instead is Outdated statistics misestimate filtered cardinality. Compare statistics age and actual-versus-estimated rows.

“Inspect index key order and WHERE/JOIN predicate patterns” concerns Existing index begins with a rarely filtered column; the reported problem instead is Outdated statistics misestimate filtered cardinality. Compare statistics age and actual-versus-estimated rows.

“Use appropriate plan-stability or parameter-sensitivity strategy based on supported engine” concerns The cached query plan favors one selectivity pattern; the reported problem instead is Outdated statistics misestimate filtered cardinality. Update appropriate statistics or adjust stats maintenance process.

“Correct indexing/statistics or use an approved plan correction mechanism” concerns Query Store captures a new high-cost plan; the reported problem instead is Outdated statistics misestimate filtered cardinality. Update appropriate statistics or adjust stats maintenance process.

“Improve batching and supported rowgroup maintenance strategy” concerns Columnstore contains many small delta rowgroups; the reported problem instead is Outdated statistics misestimate filtered cardinality. Update appropriate statistics or adjust stats maintenance process.

“Replay representative sort with captured plans” concerns Actual plan warns of spill and high memory grant; the reported problem instead is Outdated statistics misestimate filtered cardinality. Load skewed fixture and compare query plans before/after stats refresh.

“Replay affected query with prior and candidate plan on snapshot” concerns Query Store captures a new high-cost plan; the reported problem instead is Outdated statistics misestimate filtered cardinality. Load skewed fixture and compare query plans before/after stats refresh.

“Bulk-load comparable test batches and run aggregates” concerns Columnstore contains many small delta rowgroups; the reported problem instead is Outdated statistics misestimate filtered cardinality. Load skewed fixture and compare query plans before/after stats refresh.

“Compressed rowgroups and scan efficiency improve” concerns Columnstore contains many small delta rowgroups; the reported problem instead is Outdated statistics misestimate filtered cardinality. Cardinality estimates and plan selection improve appropriately.

“Invariant preserved and expected one transaction eventually succeeds” concerns App treats concurrency conflict as permanent failure; the reported problem instead is Outdated statistics misestimate filtered cardinality. Cardinality estimates and plan selection improve appropriately.

“Plan uses efficient seeks without excessive key lookups” concerns Existing index begins with a rarely filtered column; the reported problem instead is Outdated statistics misestimate filtered cardinality. Cardinality estimates and plan selection improve appropriately.

“Monitor index seek usage and write cost” concerns Existing index begins with a rarely filtered column; the reported problem instead is Outdated statistics misestimate filtered cardinality. Monitor stats modification counts and plan churn.

“Monitor plan forcing and parameter regression” concerns The cached query plan favors one selectivity pattern; the reported problem instead is Outdated statistics misestimate filtered cardinality. Monitor stats modification counts and plan churn.

“Monitor index usage and storage overhead” concerns A single recommendation ignores write/storage cost; the reported problem instead is Outdated statistics misestimate filtered cardinality. Monitor stats modification counts and plan churn.

“Inspect isolation and row-version conflict errors” concerns App treats concurrency conflict as permanent failure; the reported problem instead is Existing index begins with a rarely filtered column. Inspect index key order and WHERE/JOIN predicate patterns.

“Inspect actual plans, existing overlapping indexes and workloads” concerns A single recommendation ignores write/storage cost; the reported problem instead is Existing index begins with a rarely filtered column. Inspect index key order and WHERE/JOIN predicate patterns.

“Collect deadlock XML and lock acquisition order” concerns Deadlock graphs repeatedly identify the same pair of statements; the reported problem instead is Existing index begins with a rarely filtered column. Inspect index key order and WHERE/JOIN predicate patterns.

“Evaluate consolidated indexes against read/write impact instead of blindly applying DMV hint” concerns A single recommendation ignores write/storage cost; the reported problem instead is Existing index begins with a rarely filtered column. Create or revise composite index key order for dominant filters.

“Update appropriate statistics or adjust stats maintenance process” concerns Outdated statistics misestimate filtered cardinality; the reported problem instead is Existing index begins with a rarely filtered column. Create or revise composite index key order for dominant filters.

“Fix cardinality/index design or query shape before increasing resources” concerns Actual plan warns of spill and high memory grant; the reported problem instead is Existing index begins with a rarely filtered column. Create or revise composite index key order for dominant filters.

“Benchmark candidate and baseline indexes under mixed reads/writes” concerns A single recommendation ignores write/storage cost; the reported problem instead is Existing index begins with a rarely filtered column. Benchmark lookups before/after on representative dataset.

“Replay representative sort with captured plans” concerns Actual plan warns of spill and high memory grant; the reported problem instead is Existing index begins with a rarely filtered column. Benchmark lookups before/after on representative dataset.

“Benchmark small and large tenant parameter sets in test SQL” concerns The cached query plan favors one selectivity pattern; the reported problem instead is Existing index begins with a rarely filtered column. Benchmark lookups before/after on representative dataset.

“Query performance returns without incorrect forced assumptions” concerns Query Store captures a new high-cost plan; the reported problem instead is Existing index begins with a rarely filtered column. Plan uses efficient seeks without excessive key lookups.

“End-to-end workload improves after considering maintenance costs” concerns A single recommendation ignores write/storage cost; the reported problem instead is Existing index begins with a rarely filtered column. Plan uses efficient seeks without excessive key lookups.

“Cardinality estimates and plan selection improve appropriately” concerns Outdated statistics misestimate filtered cardinality; the reported problem instead is Existing index begins with a rarely filtered column. Plan uses efficient seeks without excessive key lookups.

“Track index usage and storage overhead” addresses the missing index dmv caution situation—a single recommendation ignores write/storage cost. The observed failure is: Existing index begins with a rarely filtered column. Monitor index seek usage and write cost.

“Monitor version-store usage and long transactions” concerns Concurrent updates produce inconsistent intermediate totals; the reported problem instead is Existing index begins with a rarely filtered column. Monitor index seek usage and write cost.

“Monitor Query Store regressed queries” concerns Query Store captures a new high-cost plan; the reported problem instead is Existing index begins with a rarely filtered column. Monitor index seek usage and write cost.