Method current_flatten_alias

datafusion/sql/src/unparser/ast.rs:200–209

Returns the most recently generated flatten alias, or `None` if `next_flatten_alias` has not been called yet.

(&self)

    /// Returns the most recently generated flatten alias, or `None` if
    /// `next_flatten_alias` has not been called yet.
    pub fn current_flatten_alias(&self) -> Option<String> {
        if self.flatten_alias_counter > 0 {
            Some(format!(
                "{FLATTEN_ALIAS_PREFIX}_{}",
                self.flatten_alias_counter
            ))
        } else {
            None
        }
    }

    pub fn distinct(&mut self, value: Option<ast::Distinct>) -> &mut Self {
        self.distinct = value;