{

size_t n;

using ColumnType = ColumnFixedString;

static constexpr bool is_parametric = true;

static constexpr auto type_id = TypeIndex::FixedString;

explicit DataTypeFixedString(size_t n_);

std::string doGetName() const override;

TypeIndex getTypeId() const override { return type_id; }

const char * getFamilyName() const override { return "FixedString"; }

size_t getN() const

{

return n;

}

MutableColumnPtr createColumn() const override;

Field getDefault() const override;

bool equals(const IDataType & rhs) const override;

SerializationPtr doGetSerialization(const SerializationInfoSettings &) const override;

bool isParametric() const override { return true; }

bool haveSubtypes() const override { return false; }

bool isComparable() const override { return true; }

bool isValueUnambiguouslyRepresentedInContiguousMemoryRegion() const override { return true; }

bool isValueUnambiguouslyRepresentedInFixedSizeContiguousMemoryRegion() const override { return true; }

bool haveMaximumSizeOfValue() const override { return true; }

size_t getSizeOfValueInMemory() const override { return n; }

bool isCategorial() const override { return true; }

bool canBeInsideNullable() const override { return true; }

bool canBeInsideLowCardinality() const override { return true; }

void updateHashImpl(SipHash & hash) const override;