sql - mySql update with the sum() of rows - 


    "id"    "type"  "parent"    "country"   "votes" "percent"     "1"     "1"     "0"         "us"        "100"       "0"     "2"     "1"     "0"         "us"        "50"        "0"     "3"     "100"   "0"         "us"        "150"       "0" ->150 = sum(votes) type = 1 , country = country     "4"     "1"     "0"         "se"        "50"        "0"     "5"     "1"     "0"         "se"        "25"        "0"     "6"     "100"   "0"         "se"        "75"        "0" ->75 = sum(votes) type = 1 , country = country

i'm trying update type=100 totals of type=1 respective countries.

i've been struggling sql , seem going nowhere. basically, i'm trying update votes type=100 sum of type = 1 respective countries. i've been trying tweak this, seem failing completely. can pls help?

update likes p join likes h   on p.country = h.country     , (p.type=1) , h.type=1 set p.votes=sum(h.votes) p.type=100; 

update  tablename         inner join         (             select  country, sum(votes) totalvotes                tablename               type = 1             group   country         ) b on a.country = b.country set     a.votes = b.totalvotes   a.type = 100

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