Use this skill to statically review SQL warehouse and query performance: warehouse type and sizing for concurrency, Photon and Predictive I/O applicability, three-tier caching semantics and when a cached result is misleading, query-profile reading for skew and spill, data layout via liquid clustering and data skipping, and materialized-view refresh timing. Reads warehouse configuration, schema, query text, query profiles, query history, and ANALYZE output only; it never executes any query and never recommends a live mutation without explicit approval.
