I think `nzchar()` has an ANSI representation as `x <> ""`. We could also be more precise and take `keepNA` into account: - `nzchar(x, keepNA = TRUE)` ➡️ `x <> ""` - `nzchar(x, keepNA = FALSE)` ➡️ `(x IS NULL OR x <> "")`
I think
nzchar()has an ANSI representation asx <> "".We could also be more precise and take
keepNAinto account:nzchar(x, keepNA = TRUE)➡️x <> ""nzchar(x, keepNA = FALSE)➡️(x IS NULL OR x <> "")