Fuzzy left join — fstring_left

Convenience wrapper for fuzzystring_join_backend(mode = "left").

Usage

fstring_left_join(x, y, by = NULL, match_fun, ...)

x: A data.frame or data.table.
y: A data.frame or data.table.
by: Columns by which to join the two tables. See fuzzystring_join.
match_fun: A function used to match values. It must return a logical vector (or a data.frame/data.table whose first column is logical) indicating which pairs match. For multi-column joins, you may pass a list of functions (one per column).
...: Additional arguments passed to the matching function(s).