l2j-server-datapack/dist/sql/game/updates/20111130update.sql

ALTER TABLE `custom_npc` MODIFY `id` mediumint(7) unsigned NOT NULL;
ALTER TABLE `custom_npc` MODIFY `idTemplate` smallint(5) unsigned NOT NULL;

ALTER TABLE `custom_npc_elementals` MODIFY `npc_id` mediumint(7) unsigned NOT NULL;