-- remove user reference from orders ALTER TABLE orders DROP COLUMN IF EXISTS user_id; -- remove agent columns from validations ALTER TABLE validations DROP COLUMN IF EXISTS agent_risk_notice; ALTER TABLE validations DROP COLUMN IF EXISTS agent_delivery_advice; ALTER TABLE validations DROP COLUMN IF EXISTS agent_continue_trade_advice; ALTER TABLE validations DROP COLUMN IF EXISTS agent_validation_explanation; -- remove agent columns from pricing_results ALTER TABLE pricing_results DROP COLUMN IF EXISTS agent_next_action; ALTER TABLE pricing_results DROP COLUMN IF EXISTS agent_budget_advice; ALTER TABLE pricing_results DROP COLUMN IF EXISTS agent_risk_advice; ALTER TABLE pricing_results DROP COLUMN IF EXISTS agent_task_match_explanation; -- remove user reference from buyer_requests ALTER TABLE buyer_requests DROP COLUMN IF EXISTS user_id; -- remove agent columns from data_assets ALTER TABLE data_assets DROP COLUMN IF EXISTS agent_asset_explanation; ALTER TABLE data_assets DROP COLUMN IF EXISTS agent_risk_per_mission_advice; ALTER TABLE data_assets DROP COLUMN IF EXISTS agent_recommended_tasks; ALTER TABLE data_assets DROP COLUMN IF EXISTS agent_asset_summary; -- remove user reference from data_assets ALTER TABLE data_assets DROP COLUMN IF EXISTS user_id; -- drop users table DROP TABLE IF EXISTS users;