Subject 
how to calculate 2 records of the same column of a grid? 
From 
Dirk <dirk.cardoen1@gmail.com> 
Date 
Tue, 12 Jan 2021 21:00:55 +0100 
Newsgroups 
dbase.gettingstarted 
Goodday,
i am trying to calculate 2 records of the same column as excel, make a
sum in a calculated fields, by clicking on the grid cell
means want to know the consume of solar electricty in a certain period
i can of course use 2 colums , 2 fields : 1 begin and 1 end
but begin of column 1 day x, should be end of column end day  15
day is date field i put the info into
so, to avoid a column i trying to find out a way as excel
thanks for a helping hand
best regards
Dirk

