CREATE TABLE IF NOT EXISTS bulk_extracts ( extract_id serial PRIMARY KEY, extracted_on timestamptz NOT NULL, extract_path text NOT NULL ); -- convert all existing timestamp columns to timestamptz assuming UTC ALTER TABLE logs ALTER log_timestamp TYPE timestamptz USING log_timestamp AT TIME ZONE 'UTC'; ALTER TABLE users ALTER registered TYPE timestamptz USING registered AT TIME ZONE 'UTC', ALTER deleted_on TYPE timestamptz USING deleted_on AT TIME ZONE 'UTC'; ALTER TABLE user_password_reset_tokens ALTER expires_on TYPE timestamptz USING expires_on AT TIME ZONE 'UTC';