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8.6

Sum not working

Asked by running32 in MySQL Server

I am trying to run a select statement and total up two amounts.  Registered is working great but shift.num_needed will not total up correctly, it is much larger than it should be.  Can someone look at this and let me know what I did incorrectly.
Thanks

SELECT distinct sum(reg.num_people) AS 'Registered'  ,  sum(shift.num_needed) as 'Number Needed' ,proj.project_title as 'Position' FROM reg right join shift on reg.reg_shift_id  = shift.shift_id inner join proj on  shift.shift_proj_id = proj.proj_id  group by proj.proj_id
 
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