Function find_closest_match

datafusion/sql/src/expr/function.rs:74–82

Find the closest matching string to the target string in the candidates list, using edit distance(case insensitive) Input `candidates` must not be empty otherwise an error is returned.

(candidates: Vec<String>, target: &str)

/// Find the closest matching string to the target string in the candidates list, using edit distance(case insensitive)
/// Input `candidates` must not be empty otherwise an error is returned.
fn find_closest_match(candidates: Vec<String>, target: &str) -> Option<String> {
    let target = target.to_lowercase();
    candidates.into_iter().min_by_key(|candidate| {
        datafusion_common::utils::datafusion_strsim::levenshtein(
            &candidate.to_lowercase(),
            &target,
        )
    })
}

/// Arguments for a function call extracted from the SQL AST
#[derive(Debug)]