#pragma once #include #include #include namespace DB { class DataTypeUUID : public IDataType { public: static constexpr bool is_parametric = false; using FieldType = UUID; using ColumnType = ColumnVector; const char * getFamilyName() const override { return "UUID"; } TypeIndex getTypeId() const override { return TypeIndex::UUID; } Field getDefault() const override; MutableColumnPtr createColumn() const override; bool isParametric() const override { return false; } bool haveSubtypes() const override { return false; } bool equals(const IDataType & rhs) const override; bool canBeUsedInBitOperations() const override { return true; } bool canBeInsideNullable() const override { return true; } bool canBePromoted() const override { return false; } bool shouldAlignRightInPrettyFormats() const override { return false; } bool textCanContainOnlyValidUTF8() const override { return true; } bool isComparable() const override { return true; } bool isValueUnambiguouslyRepresentedInContiguousMemoryRegion() const override { return true; } bool haveMaximumSizeOfValue() const override { return true; } size_t getSizeOfValueInMemory() const override { return sizeof(UUID); } bool isCategorial() const override { return true; } bool canBeInsideLowCardinality() const override { return true; } SerializationPtr doGetDefaultSerialization() const override; }; }