This helper function attempts to join two data frames using `dplyr::left_join()`. If an error occurs during the join (for example, due to missing columns or incompatible types), the function issues a warning and returns `NULL` instead of stopping execution.
safe_left_join(x, y, by, relationship = "many-to-many", ...)A data frame resulting from the left join if successful, otherwise `NULL` when an error occurs.
A data frame or tibble. The left-hand side of the join.
A data frame or tibble. The right-hand side of the join.
A character vector specifying the join keys. Passed to `dplyr::left_join()`.
A string specifying the expected relationship between keys: `"one-to-one"`, `"one-to-many"`, `"many-to-one"`, or `"many-to-many"`. Defaults to `NULL` (no check).