/// Returns a set of Strings with column names from the specified
/// table that have at least one row that matches `predicate`, if
/// the predicate can be evaluated entirely on the metadata of
/// this Chunk. Returns `None` otherwise
Returns a set of Strings with column names from the specified
table that have at least one row that matches `predicate`, if
the predicate can be evaluated entirely on the metadata of
this Chunk. Returns `None` otherwise
Returns a set of Strings with column names from the specified table that have at least one row that matches ` predicate ` if the predicate can be evaluated entirely on the metadata of this Chunk . Returns ` None ` otherwise
fn column_names(
        &self,
        _predicate: &Predicate,
        _columns: Selection<'_>,
    ) -> Result<Option<StringSet>, Self::Error> {
        Ok(None)
    }
fn column_names ( & self , _predicate : & Predicate , _columns : Selection < ' _ > , ) -> Result < Option < StringSet > , Self :: Error > { Ok ( None ) }
Returns a set of Strings with column names from the specified
table that have at least one row that matches `predicate`, if
the predicate can be evaluated entirely on the metadata of
this Chunk.
Returns a set of Strings with column names from the specified table that have at least one row that matches ` predicate ` if the predicate can be evaluated entirely on the metadata of this Chunk .
&self
_predicate
&Predicate
_columns
Selection<'_>