Merge By Checking Column Existence

check existence of columns before merging

Usage

safeMerge(x, y, by = intersect(names(x), names(y)), by.x = by, by.y = by, ...)

Arguments

x

just as in merge

y

just as in merge

by

just as in merge

by.x

just as in merge

by.y

just as in merge

...

additional arguments passed to merge