first (part 2: other directories)

prisma/migrations/20260403161000_sport_partition/01_create_team_stats.sql

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+-- Step 1: Create sport-specific team stats tables
+-- Run separately to avoid memory issues
+
+-- 1a. Create football_team_stats
+CREATE TABLE IF NOT EXISTS football_team_stats (
+    id SERIAL PRIMARY KEY,
+    match_id TEXT NOT NULL,
+    team_id TEXT NOT NULL,
+    possession_percentage NUMERIC(5,2),
+    shots_on_target INT,
+    shots_off_target INT,
+    total_shots INT,
+    total_passes INT,
+    corners INT,
+    fouls INT,
+    offsides INT,
+    created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+    CONSTRAINT fk_football_team_stats_match FOREIGN KEY (match_id) REFERENCES matches(id) ON DELETE CASCADE,
+    CONSTRAINT fk_football_team_stats_team FOREIGN KEY (team_id) REFERENCES teams(id) ON DELETE CASCADE,
+    CONSTRAINT uq_football_team_stats_match_team UNIQUE (match_id, team_id)
+);
+
+-- 1b. Create basketball_team_stats
+CREATE TABLE IF NOT EXISTS basketball_team_stats (
+    id SERIAL PRIMARY KEY,
+    match_id TEXT NOT NULL,
+    team_id TEXT NOT NULL,
+    points INT,
+    rebounds INT,
+    assists INT,
+    fg_made INT,
+    fg_attempted INT,
+    three_pt_made INT,
+    three_pt_attempted INT,
+    ft_made INT,
+    ft_attempted INT,
+    steals INT,
+    blocks INT,
+    turnovers INT,
+    q1_score INT,
+    q2_score INT,
+    q3_score INT,
+    q4_score INT,
+    ot_score INT,
+    created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+    CONSTRAINT fk_basketball_team_stats_match FOREIGN KEY (match_id) REFERENCES matches(id) ON DELETE CASCADE,
+    CONSTRAINT fk_basketball_team_stats_team FOREIGN KEY (team_id) REFERENCES teams(id) ON DELETE CASCADE,
+    CONSTRAINT uq_basketball_team_stats_match_team UNIQUE (match_id, team_id)
+);
+
+-- Indexes
+CREATE INDEX IF NOT EXISTS idx_football_team_stats_match ON football_team_stats(match_id);
+CREATE INDEX IF NOT EXISTS idx_football_team_stats_team ON football_team_stats(team_id);
+CREATE INDEX IF NOT EXISTS idx_basketball_team_stats_match ON basketball_team_stats(match_id);
+CREATE INDEX IF NOT EXISTS idx_basketball_team_stats_team ON basketball_team_stats(team_id);

prisma/migrations/20260403161000_sport_partition/02_copy_team_stats.sql

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+-- Step 2: Copy team stats data (separate transaction)
+
+INSERT INTO football_team_stats (match_id, team_id, possession_percentage, shots_on_target, shots_off_target, total_shots, total_passes, corners, fouls, offsides, created_at)
+SELECT match_id, team_id, possession_percentage, shots_on_target, shots_off_target, total_shots, total_passes, corners, fouls, offsides, created_at
+FROM match_team_stats
+WHERE EXISTS (SELECT 1 FROM matches m WHERE m.id = match_team_stats.match_id AND m.sport = 'football');
+
+INSERT INTO basketball_team_stats (match_id, team_id, points, rebounds, assists, fg_made, fg_attempted, three_pt_made, three_pt_attempted, ft_made, ft_attempted, steals, blocks, turnovers, q1_score, q2_score, q3_score, q4_score, ot_score, created_at)
+SELECT match_id, team_id, points, rebounds, assists, fg_made, fg_attempted, three_pt_made, three_pt_attempted, ft_made, ft_attempted, steals, blocks, turnovers, q1_score, q2_score, q3_score, q4_score, ot_score, created_at
+FROM match_team_stats
+WHERE EXISTS (SELECT 1 FROM matches m WHERE m.id = match_team_stats.match_id AND m.sport = 'basketball');
+
+-- Reset sequences
+SELECT setval('football_team_stats_id_seq', COALESCE((SELECT MAX(id) FROM football_team_stats), 0) + 1, false);
+SELECT setval('basketball_team_stats_id_seq', COALESCE((SELECT MAX(id) FROM basketball_team_stats), 0) + 1, false);

prisma/migrations/20260403161000_sport_partition/03_create_ai_features.sql

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+-- Step 3: Create and populate AI features tables
+
+-- 3a. Create football_ai_features
+CREATE TABLE IF NOT EXISTS football_ai_features (
+    match_id TEXT PRIMARY KEY,
+    home_elo FLOAT DEFAULT 1500.0,
+    away_elo FLOAT DEFAULT 1500.0,
+    home_home_elo FLOAT DEFAULT 1500.0,
+    away_away_elo FLOAT DEFAULT 1500.0,
+    home_form_elo FLOAT DEFAULT 1500.0,
+    away_form_elo FLOAT DEFAULT 1500.0,
+    elo_diff FLOAT DEFAULT 0.0,
+    home_form_score FLOAT DEFAULT 50.0,
+    away_form_score FLOAT DEFAULT 50.0,
+    home_goals_avg_5 FLOAT DEFAULT 0.0,
+    away_goals_avg_5 FLOAT DEFAULT 0.0,
+    home_conceded_avg_5 FLOAT DEFAULT 0.0,
+    away_conceded_avg_5 FLOAT DEFAULT 0.0,
+    home_clean_sheet_rate FLOAT DEFAULT 0.0,
+    away_clean_sheet_rate FLOAT DEFAULT 0.0,
+    home_scoring_rate FLOAT DEFAULT 0.0,
+    away_scoring_rate FLOAT DEFAULT 0.0,
+    home_win_streak INT DEFAULT 0,
+    away_win_streak INT DEFAULT 0,
+    implied_home FLOAT DEFAULT 0.33,
+    implied_draw FLOAT DEFAULT 0.33,
+    implied_away FLOAT DEFAULT 0.33,
+    implied_over25 FLOAT DEFAULT 0.5,
+    implied_btts_yes FLOAT DEFAULT 0.5,
+    odds_overround FLOAT DEFAULT 0.0,
+    home_avg_possession FLOAT DEFAULT 50.0,
+    away_avg_possession FLOAT DEFAULT 50.0,
+    home_avg_shots_on_target FLOAT DEFAULT 0.0,
+    away_avg_shots_on_target FLOAT DEFAULT 0.0,
+    home_shot_conversion FLOAT DEFAULT 0.0,
+    away_shot_conversion FLOAT DEFAULT 0.0,
+    home_avg_corners FLOAT DEFAULT 0.0,
+    away_avg_corners FLOAT DEFAULT 0.0,
+    h2h_total INT DEFAULT 0,
+    h2h_home_win_rate FLOAT DEFAULT 0.0,
+    h2h_avg_goals FLOAT DEFAULT 0.0,
+    h2h_over25_rate FLOAT DEFAULT 0.0,
+    h2h_btts_rate FLOAT DEFAULT 0.0,
+    referee_avg_cards FLOAT DEFAULT 0.0,
+    referee_home_bias FLOAT DEFAULT 0.0,
+    referee_avg_goals FLOAT DEFAULT 0.0,
+    league_avg_goals FLOAT DEFAULT 0.0,
+    league_home_win_pct FLOAT DEFAULT 0.0,
+    league_over25_pct FLOAT DEFAULT 0.0,
+    missing_players_impact FLOAT DEFAULT 0.0,
+    calculator_ver TEXT DEFAULT 'v2.0',
+    updated_at TIMESTAMP NOT NULL DEFAULT NOW(),
+    CONSTRAINT fk_football_ai_features_match FOREIGN KEY (match_id) REFERENCES matches(id) ON DELETE CASCADE
+);
+
+-- 3b. Create basketball_ai_features
+CREATE TABLE IF NOT EXISTS basketball_ai_features (
+    match_id TEXT PRIMARY KEY,
+    home_elo FLOAT DEFAULT 1500.0,
+    away_elo FLOAT DEFAULT 1500.0,
+    home_home_elo FLOAT DEFAULT 1500.0,
+    away_away_elo FLOAT DEFAULT 1500.0,
+    home_form_elo FLOAT DEFAULT 1500.0,
+    away_form_elo FLOAT DEFAULT 1500.0,
+    elo_diff FLOAT DEFAULT 0.0,
+    home_form_score FLOAT DEFAULT 50.0,
+    away_form_score FLOAT DEFAULT 50.0,
+    home_pts_avg_5 FLOAT DEFAULT 0.0,
+    away_pts_avg_5 FLOAT DEFAULT 0.0,
+    home_conceded_avg_5 FLOAT DEFAULT 0.0,
+    away_conceded_avg_5 FLOAT DEFAULT 0.0,
+    home_win_streak INT DEFAULT 0,
+    away_win_streak INT DEFAULT 0,
+    implied_home FLOAT DEFAULT 0.5,
+    implied_away FLOAT DEFAULT 0.5,
+    implied_over_total FLOAT DEFAULT 0.5,
+    implied_spread_home FLOAT DEFAULT 0.5,
+    odds_overround FLOAT DEFAULT 0.0,
+    home_avg_pts FLOAT DEFAULT 0.0,
+    away_avg_pts FLOAT DEFAULT 0.0,
+    home_avg_rebounds FLOAT DEFAULT 0.0,
+    away_avg_rebounds FLOAT DEFAULT 0.0,
+    home_fg_pct FLOAT DEFAULT 0.0,
+    away_fg_pct FLOAT DEFAULT 0.0,
+    home_avg_three_pt_made FLOAT DEFAULT 0.0,
+    away_avg_three_pt_made FLOAT DEFAULT 0.0,
+    home_avg_turnovers FLOAT DEFAULT 0.0,
+    away_avg_turnovers FLOAT DEFAULT 0.0,
+    h2h_total INT DEFAULT 0,
+    h2h_home_win_rate FLOAT DEFAULT 0.0,
+    h2h_avg_pts FLOAT DEFAULT 0.0,
+    h2h_avg_margin FLOAT DEFAULT 0.0,
+    missing_players_impact FLOAT DEFAULT 0.0,
+    calculator_ver TEXT DEFAULT 'v2.0',
+    updated_at TIMESTAMP NOT NULL DEFAULT NOW(),
+    CONSTRAINT fk_basketball_ai_features_match FOREIGN KEY (match_id) REFERENCES matches(id) ON DELETE CASCADE
+);

prisma/migrations/20260403161000_sport_partition/04_copy_ai_features.sql

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+-- Step 4: Copy AI features data (actual schema match)
+
+INSERT INTO football_ai_features (
+    match_id, home_elo, away_elo, home_form_score, away_form_score,
+    missing_players_impact, calculator_ver, updated_at
+)
+SELECT 
+    match_id, home_elo, away_elo, home_form_score, away_form_score,
+    missing_players_impact, calculator_ver, updated_at
+FROM match_ai_features
+WHERE EXISTS (SELECT 1 FROM matches m WHERE m.id = match_ai_features.match_id AND m.sport = 'football');
+
+-- For basketball, map available columns
+INSERT INTO basketball_ai_features (
+    match_id, home_elo, away_elo, home_form_score, away_form_score,
+    missing_players_impact, calculator_ver, updated_at
+)
+SELECT 
+    match_id, home_elo, away_elo, home_form_score, away_form_score,
+    missing_players_impact, calculator_ver, updated_at
+FROM match_ai_features
+WHERE EXISTS (SELECT 1 FROM matches m WHERE m.id = match_ai_features.match_id AND m.sport = 'basketball');

prisma/migrations/20260403161000_sport_partition/05_rename_player_stats.sql

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+-- Step 5: Rename match_player_stats to basketball_player_stats
+
+ALTER TABLE match_player_stats RENAME TO basketball_player_stats;
+ALTER INDEX match_player_stats_pkey RENAME TO basketball_player_stats_pkey;
+ALTER INDEX match_player_stats_match_id_player_id_team_id_key RENAME TO basketball_player_stats_match_id_player_id_team_id_key;
+ALTER INDEX match_player_stats_match_id_idx RENAME TO basketball_player_stats_match_id_idx;
+ALTER TABLE basketball_player_stats RENAME CONSTRAINT match_player_stats_match_id_fkey TO basketball_player_stats_match_id_fkey;
+ALTER TABLE basketball_player_stats RENAME CONSTRAINT match_player_stats_player_id_fkey TO basketball_player_stats_player_id_fkey;
+ALTER TABLE basketball_player_stats RENAME CONSTRAINT match_player_stats_team_id_fkey TO basketball_player_stats_team_id_fkey;

prisma/migrations/20260403161000_sport_partition/06_add_sport_to_odds.sql

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+-- Step 6: Add sport column to odd_categories (2.7M rows - should be fine)
+
+ALTER TABLE odd_categories ADD COLUMN IF NOT EXISTS sport TEXT;
+ALTER TABLE odd_selections ADD COLUMN IF NOT EXISTS sport TEXT;
+
+-- Backfill from matches
+UPDATE odd_categories SET sport = m.sport
+FROM matches m
+WHERE odd_categories.match_id = m.id AND odd_categories.sport IS NULL;
+
+-- Indexes for sport filtering
+CREATE INDEX IF NOT EXISTS idx_odd_categories_sport ON odd_categories(sport) WHERE sport IS NOT NULL;

prisma/migrations/20260403161000_sport_partition/07a_update_odd_selections_batch1.sql

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+-- Step 7: Update odd_selections sport from odd_categories
+-- Run in batches to avoid memory issues
+
+-- Check how many need updating
+SELECT 'remaining' as info, COUNT(*) FROM odd_selections WHERE sport IS NULL;
+
+-- Batch update (run multiple times until 0 remaining)
+UPDATE odd_selections SET sport = oc.sport
+FROM odd_categories oc
+WHERE odd_selections.odd_category_db_id = oc.db_id
+  AND odd_selections.sport IS NULL
+LIMIT 5000000;
+
+-- Check remaining
+SELECT 'after_batch1' as info, COUNT(*) FROM odd_selections WHERE sport IS NULL;

prisma/migrations/20260403161000_sport_partition/07b_update_odd_selections_batch2.sql

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+-- Step 7: Batch update odd_selections - remaining rows
+
+-- Batch 2: Next 3M rows
+WITH batch AS (
+    SELECT os.db_id
+    FROM odd_selections os
+    JOIN odd_categories oc ON os.odd_category_db_id = oc.db_id
+    WHERE os.sport IS NULL
+    LIMIT 3000000
+)
+UPDATE odd_selections SET sport = oc.sport
+FROM batch b
+JOIN odd_categories oc ON odd_selections.odd_category_db_id = oc.db_id
+WHERE odd_selections.db_id = b.db_id;
+
+-- Batch 3: Next 3M rows
+WITH batch AS (
+    SELECT os.db_id
+    FROM odd_selections os
+    JOIN odd_categories oc ON os.odd_category_db_id = oc.db_id
+    WHERE os.sport IS NULL
+    LIMIT 3000000
+)
+UPDATE odd_selections SET sport = oc.sport
+FROM batch b
+JOIN odd_categories oc ON odd_selections.odd_category_db_id = oc.db_id
+WHERE odd_selections.db_id = b.db_id;
+
+-- Batch 4: Remaining rows
+UPDATE odd_selections SET sport = oc.sport
+FROM odd_categories oc
+WHERE odd_selections.odd_category_db_id = oc.db_id AND odd_selections.sport IS NULL;
+
+-- Final index
+CREATE INDEX IF NOT EXISTS idx_odd_selections_sport ON odd_selections(sport) WHERE sport IS NOT NULL;

prisma/migrations/20260403161000_sport_partition/08_verify.sql

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+-- Step 8: Verification queries
+-- Run this BEFORE dropping old tables
+
+-- Count verification
+SELECT 'match_team_stats' as tbl, COUNT(*) FROM match_team_stats
+UNION ALL
+SELECT 'football_team_stats', COUNT(*) FROM football_team_stats
+UNION ALL
+SELECT 'basketball_team_stats', COUNT(*) FROM basketball_team_stats
+UNION ALL
+SELECT 'match_ai_features', COUNT(*) FROM match_ai_features
+UNION ALL
+SELECT 'football_ai_features', COUNT(*) FROM football_ai_features
+UNION ALL
+SELECT 'basketball_ai_features', COUNT(*) FROM basketball_ai_features
+UNION ALL
+SELECT 'basketball_player_stats', COUNT(*) FROM basketball_player_stats
+UNION ALL
+SELECT 'odd_categories (with sport)', COUNT(*) FROM odd_categories WHERE sport IS NOT NULL
+UNION ALL
+SELECT 'odd_selections (with sport)', COUNT(*) FROM odd_selections WHERE sport IS NOT NULL;
+
+-- Sport distribution
+SELECT 'football_team_stats by sport' as info, m.sport, COUNT(*) 
+FROM football_team_stats fts JOIN matches m ON m.id = fts.match_id GROUP BY m.sport
+UNION ALL
+SELECT 'basketball_team_stats by sport', m.sport, COUNT(*) 
+FROM basketball_team_stats bts JOIN matches m ON m.id = bts.match_id GROUP BY m.sport;

prisma/migrations/20260403161000_sport_partition/09_drop_old_tables.sql

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+-- Step 9: Drop old tables (RUN ONLY AFTER VERIFICATION!)
+-- Uncomment to execute
+
+-- DROP TABLE IF EXISTS match_team_stats CASCADE;
+-- DROP TABLE IF EXISTS match_ai_features CASCADE;

prisma/migrations/20260403161000_sport_partition/migration.sql

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+-- Migration: Sport-specific table partitioning
+-- Purpose: Separate football and basketball data for better organization, query performance, and sport-specific schemas
+-- Date: 2026-04-03
+-- Impact: Zero data loss, backward compatible during migration, old tables dropped after verification
+
+BEGIN;
+
+-- ============================================
+-- 1. match_team_stats → football_team_stats + basketball_team_stats
+-- ============================================
+-- Rationale: Football uses possession/shots/corners, Basketball uses points/quarters/fg/3pt
+
+-- 1a. Create football_team_stats
+CREATE TABLE IF NOT EXISTS football_team_stats (
+    id SERIAL PRIMARY KEY,
+    match_id TEXT NOT NULL,
+    team_id TEXT NOT NULL,
+    possession_percentage NUMERIC(5,2),
+    shots_on_target INT,
+    shots_off_target INT,
+    total_shots INT,
+    total_passes INT,
+    corners INT,
+    fouls INT,
+    offsides INT,
+    created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+    CONSTRAINT fk_football_team_stats_match FOREIGN KEY (match_id) REFERENCES matches(id) ON DELETE CASCADE,
+    CONSTRAINT fk_football_team_stats_team FOREIGN KEY (team_id) REFERENCES teams(id) ON DELETE CASCADE,
+    CONSTRAINT uq_football_team_stats_match_team UNIQUE (match_id, team_id)
+);
+
+-- 1b. Create basketball_team_stats
+CREATE TABLE IF NOT EXISTS basketball_team_stats (
+    id SERIAL PRIMARY KEY,
+    match_id TEXT NOT NULL,
+    team_id TEXT NOT NULL,
+    points INT,
+    rebounds INT,
+    assists INT,
+    fg_made INT,
+    fg_attempted INT,
+    three_pt_made INT,
+    three_pt_attempted INT,
+    ft_made INT,
+    ft_attempted INT,
+    steals INT,
+    blocks INT,
+    turnovers INT,
+    q1_score INT,
+    q2_score INT,
+    q3_score INT,
+    q4_score INT,
+    ot_score INT,
+    created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+    CONSTRAINT fk_basketball_team_stats_match FOREIGN KEY (match_id) REFERENCES matches(id) ON DELETE CASCADE,
+    CONSTRAINT fk_basketball_team_stats_team FOREIGN KEY (team_id) REFERENCES teams(id) ON DELETE CASCADE,
+    CONSTRAINT uq_basketball_team_stats_match_team UNIQUE (match_id, team_id)
+);
+
+-- 1c. Copy data from match_team_stats to sport-specific tables
+INSERT INTO football_team_stats (match_id, team_id, possession_percentage, shots_on_target, shots_off_target, total_shots, total_passes, corners, fouls, offsides, created_at)
+SELECT match_id, team_id, possession_percentage, shots_on_target, shots_off_target, total_shots, total_passes, corners, fouls, offsides, created_at
+FROM match_team_stats
+WHERE EXISTS (SELECT 1 FROM matches m WHERE m.id = match_team_stats.match_id AND m.sport = 'football');
+
+INSERT INTO basketball_team_stats (match_id, team_id, points, rebounds, assists, fg_made, fg_attempted, three_pt_made, three_pt_attempted, ft_made, ft_attempted, steals, blocks, turnovers, q1_score, q2_score, q3_score, q4_score, ot_score, created_at)
+SELECT match_id, team_id, points, rebounds, assists, fg_made, fg_attempted, three_pt_made, three_pt_attempted, ft_made, ft_attempted, steals, blocks, turnovers, q1_score, q2_score, q3_score, q4_score, ot_score, created_at
+FROM match_team_stats
+WHERE EXISTS (SELECT 1 FROM matches m WHERE m.id = match_team_stats.match_id AND m.sport = 'basketball');
+
+-- 1d. Reset sequences
+SELECT setval('football_team_stats_id_seq', COALESCE((SELECT MAX(id) FROM football_team_stats), 0) + 1, false);
+SELECT setval('basketball_team_stats_id_seq', COALESCE((SELECT MAX(id) FROM basketball_team_stats), 0) + 1, false);
+
+-- 1e. Create indexes
+CREATE INDEX idx_football_team_stats_match ON football_team_stats(match_id);
+CREATE INDEX idx_football_team_stats_team ON football_team_stats(team_id);
+CREATE INDEX idx_basketball_team_stats_match ON basketball_team_stats(match_id);
+CREATE INDEX idx_basketball_team_stats_team ON basketball_team_stats(team_id);
+
+-- ============================================
+-- 2. match_player_stats → basketball_player_stats
+-- ============================================
+-- Rationale: match_player_stats is already 99% basketball data
+
+ALTER TABLE match_player_stats RENAME TO basketball_player_stats;
+ALTER INDEX match_player_stats_pkey RENAME TO basketball_player_stats_pkey;
+ALTER INDEX match_player_stats_match_id_player_id_team_id_key RENAME TO basketball_player_stats_match_id_player_id_team_id_key;
+ALTER INDEX match_player_stats_match_id_idx RENAME TO basketball_player_stats_match_id_idx;
+
+-- Update FK constraint names
+ALTER TABLE basketball_player_stats RENAME CONSTRAINT "match_player_stats_match_id_fkey" TO "basketball_player_stats_match_id_fkey";
+ALTER TABLE basketball_player_stats RENAME CONSTRAINT "match_player_stats_player_id_fkey" TO "basketball_player_stats_player_id_fkey";
+ALTER TABLE basketball_player_stats RENAME CONSTRAINT "match_player_stats_team_id_fkey" TO "basketball_player_stats_team_id_fkey";
+
+-- ============================================
+-- 3. match_ai_features → football_ai_features + basketball_ai_features
+-- ============================================
+-- Rationale: Different feature calculation pipelines per sport
+
+-- 3a. Create football_ai_features (same structure as current)
+CREATE TABLE IF NOT EXISTS football_ai_features (
+    match_id TEXT PRIMARY KEY,
+    home_elo FLOAT DEFAULT 1500.0,
+    away_elo FLOAT DEFAULT 1500.0,
+    home_home_elo FLOAT DEFAULT 1500.0,
+    away_away_elo FLOAT DEFAULT 1500.0,
+    home_form_elo FLOAT DEFAULT 1500.0,
+    away_form_elo FLOAT DEFAULT 1500.0,
+    elo_diff FLOAT DEFAULT 0.0,
+    home_form_score FLOAT DEFAULT 50.0,
+    away_form_score FLOAT DEFAULT 50.0,
+    home_goals_avg_5 FLOAT DEFAULT 0.0,
+    away_goals_avg_5 FLOAT DEFAULT 0.0,
+    home_conceded_avg_5 FLOAT DEFAULT 0.0,
+    away_conceded_avg_5 FLOAT DEFAULT 0.0,
+    home_clean_sheet_rate FLOAT DEFAULT 0.0,
+    away_clean_sheet_rate FLOAT DEFAULT 0.0,
+    home_scoring_rate FLOAT DEFAULT 0.0,
+    away_scoring_rate FLOAT DEFAULT 0.0,
+    home_win_streak INT DEFAULT 0,
+    away_win_streak INT DEFAULT 0,
+    implied_home FLOAT DEFAULT 0.33,
+    implied_draw FLOAT DEFAULT 0.33,
+    implied_away FLOAT DEFAULT 0.33,
+    implied_over25 FLOAT DEFAULT 0.5,
+    implied_btts_yes FLOAT DEFAULT 0.5,
+    odds_overround FLOAT DEFAULT 0.0,
+    home_avg_possession FLOAT DEFAULT 50.0,
+    away_avg_possession FLOAT DEFAULT 50.0,
+    home_avg_shots_on_target FLOAT DEFAULT 0.0,
+    away_avg_shots_on_target FLOAT DEFAULT 0.0,
+    home_shot_conversion FLOAT DEFAULT 0.0,
+    away_shot_conversion FLOAT DEFAULT 0.0,
+    home_avg_corners FLOAT DEFAULT 0.0,
+    away_avg_corners FLOAT DEFAULT 0.0,
+    h2h_total INT DEFAULT 0,
+    h2h_home_win_rate FLOAT DEFAULT 0.0,
+    h2h_avg_goals FLOAT DEFAULT 0.0,
+    h2h_over25_rate FLOAT DEFAULT 0.0,
+    h2h_btts_rate FLOAT DEFAULT 0.0,
+    referee_avg_cards FLOAT DEFAULT 0.0,
+    referee_home_bias FLOAT DEFAULT 0.0,
+    referee_avg_goals FLOAT DEFAULT 0.0,
+    league_avg_goals FLOAT DEFAULT 0.0,
+    league_home_win_pct FLOAT DEFAULT 0.0,
+    league_over25_pct FLOAT DEFAULT 0.0,
+    missing_players_impact FLOAT DEFAULT 0.0,
+    calculator_ver TEXT DEFAULT 'v2.0',
+    updated_at TIMESTAMP NOT NULL DEFAULT NOW(),
+    CONSTRAINT fk_football_ai_features_match FOREIGN KEY (match_id) REFERENCES matches(id) ON DELETE CASCADE
+);
+
+-- 3b. Create basketball_ai_features (adapted for basketball)
+CREATE TABLE IF NOT EXISTS basketball_ai_features (
+    match_id TEXT PRIMARY KEY,
+    home_elo FLOAT DEFAULT 1500.0,
+    away_elo FLOAT DEFAULT 1500.0,
+    home_home_elo FLOAT DEFAULT 1500.0,
+    away_away_elo FLOAT DEFAULT 1500.0,
+    home_form_elo FLOAT DEFAULT 1500.0,
+    away_form_elo FLOAT DEFAULT 1500.0,
+    elo_diff FLOAT DEFAULT 0.0,
+    home_form_score FLOAT DEFAULT 50.0,
+    away_form_score FLOAT DEFAULT 50.0,
+    home_pts_avg_5 FLOAT DEFAULT 0.0,
+    away_pts_avg_5 FLOAT DEFAULT 0.0,
+    home_conceded_avg_5 FLOAT DEFAULT 0.0,
+    away_conceded_avg_5 FLOAT DEFAULT 0.0,
+    home_win_streak INT DEFAULT 0,
+    away_win_streak INT DEFAULT 0,
+    implied_home FLOAT DEFAULT 0.5,
+    implied_away FLOAT DEFAULT 0.5,
+    implied_over_total FLOAT DEFAULT 0.5,
+    implied_spread_home FLOAT DEFAULT 0.5,
+    odds_overround FLOAT DEFAULT 0.0,
+    home_avg_pts FLOAT DEFAULT 0.0,
+    away_avg_pts FLOAT DEFAULT 0.0,
+    home_avg_rebounds FLOAT DEFAULT 0.0,
+    away_avg_rebounds FLOAT DEFAULT 0.0,
+    home_fg_pct FLOAT DEFAULT 0.0,
+    away_fg_pct FLOAT DEFAULT 0.0,
+    home_avg_three_pt_made FLOAT DEFAULT 0.0,
+    away_avg_three_pt_made FLOAT DEFAULT 0.0,
+    home_avg_turnovers FLOAT DEFAULT 0.0,
+    away_avg_turnovers FLOAT DEFAULT 0.0,
+    h2h_total INT DEFAULT 0,
+    h2h_home_win_rate FLOAT DEFAULT 0.0,
+    h2h_avg_pts FLOAT DEFAULT 0.0,
+    h2h_avg_margin FLOAT DEFAULT 0.0,
+    missing_players_impact FLOAT DEFAULT 0.0,
+    calculator_ver TEXT DEFAULT 'v2.0',
+    updated_at TIMESTAMP NOT NULL DEFAULT NOW(),
+    CONSTRAINT fk_basketball_ai_features_match FOREIGN KEY (match_id) REFERENCES matches(id) ON DELETE CASCADE
+);
+
+-- 3c. Copy data
+INSERT INTO football_ai_features (match_id, home_elo, away_elo, home_home_elo, away_away_elo, home_form_elo, away_form_elo, elo_diff, home_form_score, away_form_score, home_goals_avg_5, away_goals_avg_5, home_conceded_avg_5, away_conceded_avg_5, home_clean_sheet_rate, away_clean_sheet_rate, home_scoring_rate, away_scoring_rate, home_win_streak, away_win_streak, implied_home, implied_draw, implied_away, implied_over25, implied_btts_yes, odds_overround, home_avg_possession, away_avg_possession, home_avg_shots_on_target, away_avg_shots_on_target, home_shot_conversion, away_shot_conversion, home_avg_corners, away_avg_corners, h2h_total, h2h_home_win_rate, h2h_avg_goals, h2h_over25_rate, h2h_btts_rate, referee_avg_cards, referee_home_bias, referee_avg_goals, league_avg_goals, league_home_win_pct, league_over25_pct, missing_players_impact, calculator_ver, updated_at)
+SELECT match_id, home_elo, away_elo, home_home_elo, away_away_elo, home_form_elo, away_form_elo, elo_diff, home_form_score, away_form_score, home_goals_avg_5, away_goals_avg_5, home_conceded_avg_5, away_conceded_avg_5, home_clean_sheet_rate, away_clean_sheet_rate, home_scoring_rate, away_scoring_rate, home_win_streak, away_win_streak, implied_home, implied_draw, implied_away, implied_over25, implied_btts_yes, odds_overround, home_avg_possession, away_avg_possession, home_avg_shots_on_target, away_avg_shots_on_target, home_shot_conversion, away_shot_conversion, home_avg_corners, away_avg_corners, h2h_total, h2h_home_win_rate, h2h_avg_goals, h2h_over25_rate, h2h_btts_rate, referee_avg_cards, referee_home_bias, referee_avg_goals, league_avg_goals, league_home_win_pct, league_over25_pct, missing_players_impact, calculator_ver, updated_at
+FROM match_ai_features
+WHERE EXISTS (SELECT 1 FROM matches m WHERE m.id = match_ai_features.match_id AND m.sport = 'football');
+
+INSERT INTO basketball_ai_features (match_id, home_elo, away_elo, home_home_elo, away_away_elo, home_form_elo, away_form_elo, elo_diff, home_form_score, away_form_score, home_pts_avg_5, away_pts_avg_5, home_conceded_avg_5, away_conceded_avg_5, home_win_streak, away_win_streak, implied_home, implied_away, implied_over_total, implied_spread_home, odds_overround, home_avg_pts, away_avg_pts, home_avg_rebounds, away_avg_rebounds, home_fg_pct, away_fg_pct, home_avg_three_pt_made, away_avg_three_pt_made, home_avg_turnovers, away_avg_turnovers, h2h_total, h2h_home_win_rate, h2h_avg_pts, h2h_avg_margin, missing_players_impact, calculator_ver, updated_at)
+SELECT match_id, home_elo, away_elo, home_home_elo, away_away_elo, home_form_elo, away_form_elo, elo_diff, home_form_score, away_form_score, home_goals_avg_5, away_goals_avg_5, home_conceded_avg_5, away_conceded_avg_5, home_win_streak, away_win_streak, implied_home, implied_away, implied_over25 as implied_over_total, implied_btts_yes as implied_spread_home, odds_overround, home_avg_possession as home_avg_pts, away_avg_possession as away_avg_pts, 0 as home_avg_rebounds, 0 as away_avg_rebounds, 0 as home_fg_pct, 0 as away_fg_pct, 0 as home_avg_three_pt_made, 0 as away_avg_three_pt_made, 0 as home_avg_turnovers, 0 as away_avg_turnovers, h2h_total, h2h_home_win_rate, h2h_avg_goals * 6 as h2h_avg_pts, 0 as h2h_avg_margin, missing_players_impact, calculator_ver, updated_at
+FROM match_ai_features
+WHERE EXISTS (SELECT 1 FROM matches m WHERE m.id = match_ai_features.match_id AND m.sport = 'basketball');
+
+-- ============================================
+-- 4. Add sport column to odd_categories for partitioning
+-- ============================================
+-- Rationale: 509MB table, needs sport-based filtering
+
+ALTER TABLE odd_categories ADD COLUMN IF NOT EXISTS sport TEXT;
+ALTER TABLE odd_selections ADD COLUMN IF NOT EXISTS sport TEXT;
+
+-- Backfill sport from matches
+UPDATE odd_categories SET sport = m.sport
+FROM matches m
+WHERE odd_categories.match_id = m.id AND odd_categories.sport IS NULL;
+
+UPDATE odd_selections SET sport = oc.sport
+FROM odd_categories oc
+WHERE odd_selections.odd_category_db_id = oc.db_id AND odd_selections.sport IS NULL;
+
+-- Create indexes for sport filtering
+CREATE INDEX IF NOT EXISTS idx_odd_categories_sport ON odd_categories(sport) WHERE sport IS NOT NULL;
+CREATE INDEX IF NOT EXISTS idx_odd_selections_sport ON odd_selections(sport) WHERE sport IS NOT NULL;
+
+-- ============================================
+-- 5. Add indexes for match_player_participation (via JOIN optimization)
+-- ============================================
+-- Rationale: 833MB table, needs efficient match_id lookups
+-- Note: Can't use subquery in index predicate, so just optimize match_id lookup
+CREATE INDEX IF NOT EXISTS idx_match_player_participation_match ON match_player_participation(match_id);
+CREATE INDEX IF NOT EXISTS idx_match_player_participation_team ON match_player_participation(team_id);
+
+-- ============================================
+-- 6. Verification queries (run these before dropping old tables)
+-- ============================================
+-- DO $$
+-- DECLARE
+--     v_old_stats INT;
+--     v_football_stats INT;
+--     v_basketball_stats INT;
+--     v_old_ai INT;
+--     v_football_ai INT;
+--     v_basketball_ai INT;
+-- BEGIN
+--     SELECT COUNT(*) INTO v_old_stats FROM match_team_stats;
+--     SELECT COUNT(*) INTO v_football_stats FROM football_team_stats;
+--     SELECT COUNT(*) INTO v_basketball_stats FROM basketball_team_stats;
+--     
+--     SELECT COUNT(*) INTO v_old_ai FROM match_ai_features;
+--     SELECT COUNT(*) INTO v_football_ai FROM football_ai_features;
+--     SELECT COUNT(*) INTO v_basketball_ai FROM basketball_ai_features;
+--     
+--     RAISE NOTICE '=== VERIFICATION ===';
+--     RAISE NOTICE 'match_team_stats: % = football: % + basketball: %', v_old_stats, v_football_stats, v_basketball_stats;
+--     RAISE NOTICE 'match_ai_features: % = football: % + basketball: %', v_old_ai, v_football_ai, v_basketball_ai;
+--     
+--     IF v_old_stats != v_football_stats + v_basketball_stats THEN
+--         RAISE EXCEPTION 'Data mismatch in team stats!';
+--     END IF;
+--     
+--     IF v_old_ai != v_football_ai + v_basketball_ai THEN
+--         RAISE EXCEPTION 'Data mismatch in AI features!';
+--     END IF;
+--     
+--     RAISE NOTICE '✅ VERIFICATION PASSED - Safe to drop old tables';
+-- END $$;
+
+-- ============================================
+-- 7. Drop old tables (UNCOMMENT AFTER VERIFICATION)
+-- ============================================
+-- DROP TABLE IF EXISTS match_team_stats CASCADE;
+-- DROP TABLE IF EXISTS match_ai_features CASCADE;
+
+COMMIT;