Function arrow_string::regexp::regexp_match

pub fn regexp_match(
    array: &dyn Array,
    regex_array: &dyn Datum,
    flags_array: Option<&dyn Datum>,
) -> Result<ArrayRef, ArrowError>

Extract all groups matched by a regular expression for a given String array.

Modelled after the Postgres regexp_match.

Returns a ListArray of GenericStringArray with each element containing the leftmost-first match of the corresponding index in regex_array to string in array

If there is no match, the list element is NULL.

If a match is found, and the pattern contains no capturing parenthesized subexpressions, then the list element is a single-element GenericStringArray containing the substring matching the whole pattern.

If a match is found, and the pattern contains capturing parenthesized subexpressions, then the list element is a GenericStringArray whose n’th element is the substring matching the n’th capturing parenthesized subexpression of the pattern.

The flags parameter is an optional text string containing zero or more single-letter flags that change the function’s behavior.