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brackt/drizzle/0035_increase_prob_precision.sql

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User/chris/ev f1 framework (#93) * feat: EV simulation framework with F1 Monte Carlo simulator - Add EV snapshot tables (participant_ev_snapshots, team_ev_snapshots) and simulation_status column on sports seasons - Add ev-snapshot model with upsert and history query functions - Add simulator framework: types, bracket/F1/golf simulators, registry - F1 simulator: vig-removed ICM weighted draw (pre-season) + race-by-race Monte Carlo from current standings (in-season); per-position column normalization to prevent floating-point EV drift - Add admin simulate route and Run Simulation button on sports season page - Rework futures-odds admin page to save odds then run simulation in one action - Remove recalculate-probabilities route (superseded by simulate route) - Remove EV trend chart panel and associated DB queries Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> * feat: map simulators to sports via simulatorType field Adds a `simulator_type` enum column to the `sports` table so each sport can be assigned a specific simulation algorithm rather than deriving it from the sports season's scoring pattern. - Add `simulatorTypeEnum` (f1_standings, indycar_standings, golf_qualifying_points, playoff_bracket) + `simulatorType` nullable column on `sports` table; migration 0037 - Rewrite simulator registry to key off `SimulatorType` instead of `ScoringPattern`; indycar_standings shares F1Simulator for now - `findSportsSeasonById` now returns `SportsSeasonWithSport` so callers have typed access to `sport.simulatorType` - Simulate and futures-odds actions read `sport.simulatorType`; guard fires before setting `simulationStatus: running` - Admin sport edit page gains a Simulator Type dropdown Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> --------- Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-03-09 15:34:31 -07:00
-- Increase probability column precision from numeric(5,2) to numeric(6,4)
-- numeric(5,2) only stores 2 decimal places (e.g. 0.05), causing EV sums to drift
-- from the expected 340 due to rounding. numeric(6,4) stores 4 decimal places
-- (e.g. 0.0457), sufficient for 10,000-simulation output (min step = 0.0001).
ALTER TABLE "participant_expected_values"
ALTER COLUMN "prob_first" TYPE numeric(6,4) USING prob_first::numeric(6,4),
ALTER COLUMN "prob_second" TYPE numeric(6,4) USING prob_second::numeric(6,4),
ALTER COLUMN "prob_third" TYPE numeric(6,4) USING prob_third::numeric(6,4),
ALTER COLUMN "prob_fourth" TYPE numeric(6,4) USING prob_fourth::numeric(6,4),
ALTER COLUMN "prob_fifth" TYPE numeric(6,4) USING prob_fifth::numeric(6,4),
ALTER COLUMN "prob_sixth" TYPE numeric(6,4) USING prob_sixth::numeric(6,4),
ALTER COLUMN "prob_seventh" TYPE numeric(6,4) USING prob_seventh::numeric(6,4),
ALTER COLUMN "prob_eighth" TYPE numeric(6,4) USING prob_eighth::numeric(6,4);
ALTER TABLE "participant_ev_snapshots"
ALTER COLUMN "prob_first" TYPE numeric(6,4) USING prob_first::numeric(6,4),
ALTER COLUMN "prob_second" TYPE numeric(6,4) USING prob_second::numeric(6,4),
ALTER COLUMN "prob_third" TYPE numeric(6,4) USING prob_third::numeric(6,4),
ALTER COLUMN "prob_fourth" TYPE numeric(6,4) USING prob_fourth::numeric(6,4),
ALTER COLUMN "prob_fifth" TYPE numeric(6,4) USING prob_fifth::numeric(6,4),
ALTER COLUMN "prob_sixth" TYPE numeric(6,4) USING prob_sixth::numeric(6,4),
ALTER COLUMN "prob_seventh" TYPE numeric(6,4) USING prob_seventh::numeric(6,4),
ALTER COLUMN "prob_eighth" TYPE numeric(6,4) USING prob_eighth::numeric(6,4);
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