fn group_hash(&self) -> Result<DFUInt64Array> {
        Err(ErrorCode::BadDataValueType(format!(
            "Unsupported apply group_hash operation for {:?}",
            self,
        )))
    }
/// Compute the hash for all values in the array.
Compute the hash for all values in the array.
Compute the hash for all values in the array .
fn group_hash(&self) -> Result<DFUInt64Array> {
        Err(ErrorCode::BadDataValueType(format!(
            "Unsupported apply group_hash operation for {:?}",
            self,
        )))
    }
fn group_hash ( & self ) -> Result < DFUInt64Array > { Err ( ErrorCode :: BadDataValueType ( format ! ( " " self ) ) ) }
Compute the hash for all values in the array.
Compute the hash for all values in the array .
&self
&self