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hi experts

i have a problem plse help me.

iam fetching data from the DB tables to the internal table.now i want to find the no of rows for the perticular field, not the entire internal table .

ex: eatch material have many packaging types , for eatch packing type there will be multiple components.

i want to find the no of components in the internal table , i.e .field wise records.

if the no of records are 1 need not to do the sum,if no of records are more than 1 then i have to do the sum for the quantity.

plse help me.....

with regards

aaryaa