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migrations/completed/007_cleanup_session_history_hardware_id.sql

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+-- Migration: Cleanup session_history hardware_id column
+-- Date: 2025-01-03
+-- Description: Migrate hardware_id data to hardware_fingerprint and remove old column
+
+BEGIN;
+
+-- Copy data from hardware_id to hardware_fingerprint where it's null
+UPDATE session_history 
+SET hardware_fingerprint = hardware_id 
+WHERE hardware_fingerprint IS NULL AND hardware_id IS NOT NULL;
+
+-- Make hardware_fingerprint NOT NULL
+ALTER TABLE session_history 
+ALTER COLUMN hardware_fingerprint SET NOT NULL;
+
+-- Drop the old hardware_id column
+ALTER TABLE session_history 
+DROP COLUMN hardware_id CASCADE;
+
+-- Add comment
+COMMENT ON COLUMN session_history.hardware_fingerprint IS 'Unique hardware identifier for the session';
+
+COMMIT;