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DataTypeUUID.h
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51 lines (36 loc) · 1.69 KB
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#pragma once
#include <DataTypes/IDataType.h>
#include <Columns/ColumnVector.h>
#include <Core/UUID.h>
namespace DB
{
class DataTypeUUID : public IDataType
{
public:
static constexpr bool is_parametric = false;
using FieldType = UUID;
using ColumnType = ColumnVector<UUID>;
static constexpr auto type_id = TypeIndex::UUID;
const char * getFamilyName() const override { return "UUID"; }
TypeIndex getTypeId() const override { return type_id; }
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 isValueUnambiguouslyRepresentedInFixedSizeContiguousMemoryRegion() 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; }
void updateHashImpl(SipHash &) const override {}
SerializationPtr doGetDefaultSerialization() const override;
};
}