safeMerge | R Documentation |
check existence of columns before merging
safeMerge(x, y, by = intersect(names(x), names(y)), by.x = by, by.y = by, ...)
x |
just as in |
y |
just as in |
by |
just as in |
by.x |
just as in |
by.y |
just as in |
... |
additional arguments passed to |
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