ALTER TABLE kamailio.dialplan MODIFY `match_exp` varchar(64) NOT NULL;
ALTER TABLE kamailio.dialplan MODIFY `subst_exp` varchar(64) NOT NULL;
ALTER TABLE kamailio.dialplan MODIFY `repl_exp` varchar(64) NOT NULL;

ALTER TABLE provisioning.voip_rewrite_rules MODIFY `match_pattern` varchar(64) NOT NULL DEFAULT '';
ALTER TABLE provisioning.voip_rewrite_rules MODIFY `replace_pattern` varchar(64) NOT NULL;