mysql - Sum of a joined table -


it possible has been answered somewhere couldn't find it. appreciate if me sql statement again.

this sql statement have far: 

select * , round( (rate * time_to_sec( total ) /3600 ) , 2) revenue (select event.eventid, event.staffid, event.role, timediff( time, pause )  total, case when position = 'teamleader' (teamleader) when position = 'waiter' (waiter) else '0' end rate event, rates, eventoverview storno =0 , event.eventid= eventoverview.eventid , event.clientid = rates.clientid group event.eventid, event.clientid)q1 group q1.staffid

the table getting giving me total rate per staff , event. achieve sum of rates per staff. sum of revenue.

hope can me. in advance

you can enclose query in subquery , in outer query this:

select *,   sum(revenue) (      select * ,        round( (rate * time_to_sec( total ) /3600 ) , 2) revenue          (        select           event.eventid,           event.staffid,           event.role,           timediff( time, pause ) total,          case when position = 'teamleader' (teamleader)               when position = 'waiter'     (waiter)               else '0'          end rate        event        inner join rates         on event.clientid = rates.clientid        inner join eventoverview on event.eventid  = eventoverview.eventid        storno =0        group event.eventid, event.clientid     )q1     group q1.staffid ) t group staffid;

note that: might inconsistent data, due use of select * group by staffid only, columns not in group by clause need enclosed aggregate function otherwise mysql arbitrary value it. not recommended , it not standard way so.


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