DROP INDEX IF EXISTS idx_unique_pipeline; DROP INDEX IF EXISTS idx_unique_step; DROP INDEX IF EXISTS idx_unique_field; DROP INDEX IF EXISTS idx_unique_tag; ALTER TABLE question DROP COLUMN IF EXISTS utm, DROP COLUMN IF EXISTS rules; DROP TABLE IF EXISTS tags; DROP TABLE IF EXISTS fields; DO $$ BEGIN IF EXISTS (SELECT 1 FROM pg_type WHERE typname = 'entitytype') THEN DROP TYPE EntityType; END IF; END $$; DROP TABLE IF EXISTS steps; DROP TABLE IF EXISTS pipelines; DROP TABLE IF EXISTS tokens; DROP TABLE IF EXISTS users;