Grouping by line items in mysql -


i need result of 1 column different on each row.

this how data appears:

ticketnumber  legnumber  commission 100           1          50 100           2          50

this how need appear:

ticketnumber  legnumber  commission 100           1          100 100           2          0

so when legnumber = 1 need commission group ticketnumber, when legnumber > 1 commission should zero. tried writing case statement no avail. suggestions on how accomplish this?

you can use group by attribute

select table1.ticketnumber, legnumber , case when legnumber = 1 sum(table2.commission) else 0 end commission  table1 join (select ticketnumber, sum(commission) commission                   table1                   group ticketnumber) table2 on table1.ticketnumber = table2.ticketnumber group table1.ticketnumber, legnumber order table1.ticketnumber, legnumber

sql fiddle


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