DROP INDEX IF EXISTS idx_webhook_dead_letters_template; DROP TABLE IF EXISTS webhook_dead_letters; ALTER TABLE webhook_logs DROP COLUMN IF EXISTS payload_truncated; ALTER TABLE webhook_logs DROP COLUMN IF EXISTS payload_preview; ALTER TABLE webhook_logs DROP COLUMN IF EXISTS attempt_count; DROP TABLE IF EXISTS webhook_template_versions; ALTER TABLE webhook_templates DROP CONSTRAINT IF EXISTS webhook_templates_max_retries_chk; ALTER TABLE webhook_templates DROP COLUMN IF EXISTS max_retries; ALTER TABLE webhook_templates DROP COLUMN IF EXISTS signing_secret; ALTER TABLE webhook_templates DROP COLUMN IF EXISTS version;