left join - Mysql query that includes TWO sums from columns in other tables -

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got query running 1 sum different table, works (and obtained forum well):

select     r.rep_id repid, r.rep_desbrev repdesc,      ifnull(sum(rd.repdata_cant), 0) cant      repuestos r  left join      rep_data rd, on rd.repdata_repid = r.rep_id  group      rd.repdata_repid

now, thing i'd add column obtains total inventory (something 

ifnull(sum(i.inv_cant), 0) inv)  table inventario i.inv_repid = r.rep_id

this value can obtained means of join, in exact same way got first statement works, have not found way include both sums in 1 query.

any ideas? thanks!

try query example

select  t1.id, ifnull(sum(t1.my_column),0) sum1, ifnull(other.sum,0) sum2 table t1 left join (select id , sum(other_table_column) other_table group id) other on t1.id = other.id group t1.id

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