Snaží se udělat dvě MySQL Výpočet na základě hodnoty jednoho sloupce [uzavřen]

Mám select, ale chtějí vyhodnotit jeden sloupec, pokud obsahuje hodnotu 584. Snažím se vytvořit nový výpočet sloupec s názvem celkový vynásobením 3 další sloupce, pokud není 584 pak vypočítá na základě různých sloupců

    select CASE `d2c_3_csg_batch_in`.`transactioncode` AS `transactioncode`,
`d2c_3_csg_batch_in`.`site` AS `site`,
`d2c_3_csg_employees`.`lastname` AS `lastname`,
`d2c_3_csg_employees`.`firstname` AS `firstname`,
`d2c_3_csg_employees`.`payrate` AS `payrate`,
`d2c_3_csg_batch_in`.`employeecode` AS `employeecode`,
`d2c_3_csg_batch_in`.`jobcode` AS `jobcode`,
`d2c_3_csg_employees`.`CompanyFrequency` AS `CompanyFrequency`,
`d2c_3_csg_batch_in`.`inputunits` AS `inputunits`,
`d2c_3_csg_transactioncodes`.`multiplier` AS `multiplier`,
`d2c_3_csg_transactioncodes`.`payspacewording` AS `payspacewording`,
        WHEN `d2c_3_csg_batch_in`.`transactioncode` = '584' THEN `d2c_3_csg_batch_in`.`inputunits` AS `total`
        WHEN `d2c_3_csg_batch_in`.`transactioncode` <> '584' THEN `d2c_3_csg_batch_in`.`inputunits` * `d2c_3_csg_employees`.`payrate` * `d2c_3_csg_transactioncodes`.`multiplier` AS `total` 
     END
from ((`d2c_3_csg_transactioncodes` join `d2c_3_csg_batch_in` on(`d2c_3_csg_transactioncodes`.`code` = `d2c_3_csg_batch_in`.`transactioncode`)) 
left join `d2c_3_csg_employees` on(`d2c_3_csg_batch_in`.`employeecode` = `d2c_3_csg_employees`.`employeenumber`)) 
where `d2c_3_csg_batch_in`.`flag` = 'ADD' and `d2c_3_csg_batch_in`.`prp` = 'Y' 
group by `d2c_3_csg_batch_in`.`employeecode`,`d2c_3_csg_batch_in`.`transactioncode` 
order by `d2c_3_csg_batch_in`.`employeecode` desc,`d2c_3_csg_batch_in`.`transactioncode`