Devart Forums

i have one dbgrid :

co1|col2
a | b
c | d
e | f
g | h
-------------
i | j

a=100
b=100
c=300
d= b+c = 400
e=600
f=d+e=1000
g=200
h=f+g=1200
i=sum(col1)=1200
j=h=1200

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i fill col1 from DB
how to automate fill col2

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sorry for my bad english

Try using calculated fields.
create a calc. field in your fieldlist (e.q. tmysql or tmytable)
then fill the oncalc event with the desired formula.