i tried to execute this batch file :
mysql.exe -e "delete FROM `character_data` USING character_data, character_data AS tmpcharacter_data WHERE NOT character_data.CharacterID=tmpcharacter_data.CharacterID AND character_data.CharacterID<tmpcharacter_data.CharacterID AND (character_data.PlayerUID=tmpcharacter_data.PlayerUID)" dayz_epoch -h localhost -u Svr --password=*****
it says that mysql is not recognised as a program or something ?