I have a dataframe with 2 column lists (2 variabels):
column 1 column 2
1        324
2        NA
3        NA
4        1
45       NA
325      1
4556     NA
which i like to merge with another dataframe that i have that has 8 variables:
 column 1 column 2 column 3 column 4  column 5 column 6  column 7 column8
    1        324     1        324        etc.                 etc.
    2        NA      1        324
    2        NA      1        324
    2        NA      1        324
    2        NA      1        324
How can i do so?