UPDATE `table1` pv inner join
(SELECT  Email,IF(`DS Start Date` = "-",Round((DATEDIFF(CURDATE(),STR_TO_DATE(`Start Date`,'%Y-%m-%d')))/365,2),
         Round((DATEDIFF(STR_TO_DATE(`DS Start Date`,'%Y-%m-%d'),STR_TO_DATE(`Start Date`,'%Y-%m-%d')))/365,2)) as ba_tenure,
    IF(`DS End Date` != "-",Round((DATEDIFF(STR_TO_DATE(`DS End Date`,'%Y-%m-%d'),STR_TO_DATE(`DS Start Date`,'%Y-%m-%d')))/365,2),
    Round((DATEDIFF(CURDATE(),STR_TO_DATE(`DS Start Date`,'%Y-%m-%d')))/365,2)) as ds_tenure,
    Round((DATEDIFF(CURDATE(),STR_TO_DATE(`Start Date`,'%Y-%m-%d')))/365,2) as overall_tenure
                      from `table1` where Status = "Active" ) A on (pv.Email = A.Email)
                      set  pv.`Tenure (Yrs)` = A.overall_tenure,pv.`BA Team Tenure` = A.ba_tenure,pv.`DS Team Tenure` = A.ds_tenure

#1411 - Incorrect datetime value: '-' for function str_to_date

IF(`DS End Date` != "-",
Round((DATEDIFF(STR_TO_DATE(`DS End Date`,'%Y-%m-%d'),STR_TO_DATE(`DS Start Date`,'%Y-%m-%d')))/365,2),
Round((DATEDIFF(CURDATE(),STR_TO_DATE(`DS Start Date`,'%Y-%m-%d')))/365,2)) as ds_tenure,