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migrations/completed/002_remove_old_hardware_columns.sql

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+-- Remove old hardware columns after migration to new names
+-- This should only be run after all clients have been updated!
+
+-- 1. Drop old columns from sessions table
+ALTER TABLE sessions DROP COLUMN IF EXISTS hardware_id;
+
+-- 2. Drop old columns from device_registrations table  
+ALTER TABLE device_registrations DROP COLUMN IF EXISTS hardware_id;
+
+-- 3. Drop old columns from license_tokens table
+ALTER TABLE license_tokens DROP COLUMN IF EXISTS hardware_id;
+
+-- 4. Drop old columns from license_heartbeats table (partitioned)
+ALTER TABLE license_heartbeats DROP COLUMN IF EXISTS hardware_id;
+
+-- 5. Drop old columns from activation_events table
+ALTER TABLE activation_events 
+DROP COLUMN IF EXISTS hardware_id,
+DROP COLUMN IF EXISTS previous_hardware_id;
+
+-- 6. Drop old columns from active_sessions table
+ALTER TABLE active_sessions DROP COLUMN IF EXISTS hardware_id;
+
+-- 7. Drop old columns from license_sessions table
+ALTER TABLE license_sessions DROP COLUMN IF EXISTS hardware_id;
+
+-- 8. Drop old columns from session_history table
+ALTER TABLE session_history DROP COLUMN IF EXISTS hardware_id;
+
+-- Drop old indexes that referenced hardware_id
+DROP INDEX IF EXISTS idx_device_hardware;
+DROP INDEX IF EXISTS idx_hardware;
+DROP INDEX IF EXISTS idx_heartbeat_hardware_time;
+DROP INDEX IF EXISTS idx_license_sessions_license_hardware;
+
+-- Note: The activations table in the license server database 
+-- still uses machine_id and hardware_hash columns.
+-- Those are handled separately in the license server.