- Fix upsert_many() to use column_name for EXCLUDED references
(ForeignKeyField columns end in _id, e.g., batter -> batter_id)
- Add null checks in batting/pitching CSV output for player, team, game
fields to prevent 'NoneType' not subscriptable errors
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Fix NULL handling for FK checks in stratplays.py: use x.field_id instead
of x.field to avoid triggering FK lookups on potentially missing rows
- Cast boolean is_start to integer for SUM() - PostgreSQL cannot sum booleans
- Add missing GROUP BY clause to Decision aggregate query
- Add Case import for boolean-to-integer casting
- Update migration script with boolean/datetime column mappings
- Exclude legacy battingstat/pitchingstat tables from migration
- Add comprehensive POSTGRES_MIGRATION_GUIDE.md documentation
Tested: /plays/batting and /plays/pitching endpoints work with group_by=player
- Refactor get_batting_totals() to conditionally build SELECT fields based on group_by parameter
- Refactor get_pitching_totals() with same pattern
- Ensures all non-aggregated SELECT fields are included in GROUP BY clause
- Based on successful Major Domo migration pattern
