Solution 1:
We may use [[ or $
sum_of_a$COLS
or with [[
sum_of_a[[1]]
In R, the indexing starts from 1
R SQLDF extract only a value
Solution 1:
We may use [[ or $
sum_of_a$COLS
or with [[
sum_of_a[[1]]
In R, the indexing starts from 1