{"slug":"warehouse-query-cost-review","source_name":"warehouse-query-cost-review","name":"Warehouse Query Cost Review","description":"Reviews a BigQuery or Snowflake SQL query for scan cost — flags reading every column off a wide columnar table, a query with no filter on the partitioning or clustering column, an unbounded scan over all history, and accidental cartesian joins that multiply the data processed. Use when someone asks why a warehouse query is expensive, why the bill jumped, or to check a query's scan cost before scheduling it. This is a bytes-scanned cost lens, distinct from Postgres index and lock tuning (postgres-query-review) and from join-grain/fan-out correctness (join-grain-guard).","version":1,"lift":{"pass_rate_delta_pts":null,"pass_rate_pct":23.1,"total_cases":13,"passed_cases":3,"tokens_delta_pct":628.1,"turns_delta_pct":0,"verdict":"mixed","benchmark_model":"gemini-3.5-flash","grading_method":"judged","completed_at":"2026-07-10T20:27:02.634645+00:00"},"skill_score":0.9259259259259259,"benchmark_models":[{"model":"gemini-3.5-flash","headline":false,"delta_pts":null,"with_pass_pct":null,"without_pass_pct":null,"tokens_delta_pct":628.1,"turns_delta_pct":0,"total_cases":13,"cases_aggregated":12,"verdict":"mixed","never_hurt":true,"completed_at":"2026-07-10T20:27:02.634645+00:00","run_id":"c4191eb5-ed7b-4d7b-b0cd-f87280b71833","latest_attempt":{"id":"c4191eb5-ed7b-4d7b-b0cd-f87280b71833","runner_model":"gemini-3.5-flash","overall_verdict":"mixed","completed_at":"2026-07-10T20:27:02.634645+00:00","gate":"not_comparable"},"version_number":1,"is_latest_version":true,"gate":"not_comparable"}],"trust":{"skill_safety":"passed","safety_status":"clean","intent_verdict":"safe","content_status":"clean","indexable":false},"license":null,"install_count":1,"total_uses":76,"total_users":3,"manifest_hash":"cd60470145a1fd8a28fceea0eed7bda2cde83ce5d0b393c05fc37c3235692bc1","install_name":"warehouse-query-cost-review","version_id":"413e294a-52ee-4286-bafd-e0ad08690ddc","body_sha256":"31d3ea881d2038898afffde8262860bca1b73987add8ca7b843f3ee9efac714c","render_hash":"86833e7fddadd88aa1cf902cf32dae80ebdc0e3bb353503d635bcf62830a80d9","raw_url":"https://app.decimal.ai/s/warehouse-query-cost-review/SKILL.md","scorecard_url":"https://app.decimal.ai/skills/warehouse-query-cost-review"}