Initial commit - Church Music Database

legacy-site/backend/migration.sql

@@ -0,0 +1,68 @@
+-- Database Migration SQL Script
+-- Run this with a database user that has CREATE privilege
+-- Command: psql -U postgres -d church_songlyric -f migration.sql
+
+-- OR connect as the database owner:
+-- psql -U songlyric_user -d church_songlyric -f migration.sql
+
+BEGIN;
+
+-- Add indexes for performance (10-100x faster queries)
+CREATE INDEX IF NOT EXISTS idx_profile_name ON profiles(name);
+CREATE INDEX IF NOT EXISTS idx_song_title ON songs(title);
+CREATE INDEX IF NOT EXISTS idx_song_artist ON songs(artist);
+CREATE INDEX IF NOT EXISTS idx_song_band ON songs(band);
+CREATE INDEX IF NOT EXISTS idx_plan_date ON plans(date);
+CREATE INDEX IF NOT EXISTS idx_plan_profile ON plans(profile_id);
+CREATE INDEX IF NOT EXISTS idx_plan_songs_plan ON plan_songs(plan_id);
+CREATE INDEX IF NOT EXISTS idx_plan_songs_order ON plan_songs(plan_id, order_index);
+CREATE INDEX IF NOT EXISTS idx_profile_songs_profile ON profile_songs(profile_id);
+CREATE INDEX IF NOT EXISTS idx_profile_song_keys ON profile_song_keys(profile_id, song_id);
+
+-- Add unique constraints to prevent duplicates
+-- Note: These will fail if duplicate data exists - clean data first
+
+-- Check for duplicates first:
+-- SELECT plan_id, song_id, COUNT(*) FROM plan_songs GROUP BY plan_id, song_id HAVING COUNT(*) > 1;
+-- SELECT profile_id, song_id, COUNT(*) FROM profile_songs GROUP BY profile_id, song_id HAVING COUNT(*) > 1;
+-- SELECT profile_id, song_id, COUNT(*) FROM profile_song_keys GROUP BY profile_id, song_id HAVING COUNT(*) > 1;
+
+DO $$ 
+BEGIN
+    IF NOT EXISTS (
+        SELECT 1 FROM pg_constraint WHERE conname = 'uq_plan_song'
+    ) THEN
+        ALTER TABLE plan_songs ADD CONSTRAINT uq_plan_song UNIQUE (plan_id, song_id);
+    END IF;
+END $$;
+
+DO $$ 
+BEGIN
+    IF NOT EXISTS (
+        SELECT 1 FROM pg_constraint WHERE conname = 'uq_profile_song'
+    ) THEN
+        ALTER TABLE profile_songs ADD CONSTRAINT uq_profile_song UNIQUE (profile_id, song_id);
+    END IF;
+END $$;
+
+DO $$ 
+BEGIN
+    IF NOT EXISTS (
+        SELECT 1 FROM pg_constraint WHERE conname = 'uq_profile_song_key'
+    ) THEN
+        ALTER TABLE profile_song_keys ADD CONSTRAINT uq_profile_song_key UNIQUE (profile_id, song_id);
+    END IF;
+END $$;
+
+COMMIT;
+
+-- Verify indexes were created
+SELECT schemaname, tablename, indexname 
+FROM pg_indexes 
+WHERE tablename IN ('profiles', 'songs', 'plans', 'plan_songs', 'profile_songs', 'profile_song_keys')
+ORDER BY tablename, indexname;
+
+-- Verify constraints were created
+SELECT conname, contype, conrelid::regclass AS table_name
+FROM pg_constraint
+WHERE conname IN ('uq_plan_song', 'uq_profile_song', 'uq_profile_song_key');