-- Patch to drop unused etp_user -- Drop indexes depending on etp_user DROP INDEX /*i*/echo_target_page_user_event ON /*_*/echo_target_page; DROP INDEX /*i*/echo_target_page_user_page_event ON /*_*/echo_target_page; -- Drop etp_user column ALTER TABLE /*_*/echo_target_page DROP etp_user; -- Add index on etp_event CREATE INDEX /*i*/echo_target_page_event ON /*_*/echo_target_page (etp_event);