Tratando de hacer dos MySQL Cálculo basado en el valor de una columna [cerrado]

Tengo una instrucción select, pero desea evaluar una columna, si contiene el valor de 584. Estoy tratando de crear un nuevo cálculo de la columna total multiplicando las otras 3 columnas, si no 584, a continuación, calcular, basándose en diferentes columnas

    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`