double val_real(bool *null_value) const
void update_hash(bool set_null, data_ref, Item_result type, const charset_info_st *cs, Derivation dv, bool unsigned_arg)
String * val_str(bool *null_value, String *, uint32_t decimals) const
type::Decimal * val_decimal(bool *null_value, type::Decimal *result) const
int64_t val_int(bool *null_value) const