/// Returns the lexicographical minimum value in the column. None is
/// returned only if the column does not contain any non-null values.
Returns the lexicographical minimum value in the column. None is
returned only if the column does not contain any non-null values.
Returns the lexicographical minimum value in the column . None is returned only if the column does not contain any non - null values .
pub fn column_min(&self) -> Option<&'_ String> {
        match self {
            Self::RLE(enc) => enc.column_min(),
            Self::Plain(enc) => enc.column_min(),
        }
    }
pub fn column_min ( & self ) -> Option < & ' _ String > { match self { Self :: RLE ( enc ) => enc . column_min ( ) , Self :: Plain ( enc ) => enc . column_min ( ) , } }
Returns the lexicographical minimum value in the column.
Returns the lexicographical minimum value in the column .
&self