MySQL: How do I list one column and sum the other? -


i'm using following sql:

  select     a.name accountname,     sum((i.value - i.paidvalue)) onemonth   insertions   join contracts c on i.contractid = c.id   join accounts on c.accountid = a.id   i.value > i.paidvalue     , i.isdeleted false     , i.iscanceled false     , i.month = 8     , i.year = 2013

it should produce output this:

accountname | onemonth companya    | 3000 [ sum of 1000, 1000, 1000 ] companyb    | 1000

but it's doing is:

accountname | onemonth companya    | 4000

what doing wrong?

you forgot group clause

group a.id

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