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46 lines
1.3 KiB
C++
46 lines
1.3 KiB
C++
#pragma once
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#include <Core/Types.h>
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#include <DataTypes/DataTypeDateTime.h>
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#include <DataTypes/DataTypeDecimalBase.h>
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class DateLUTImpl;
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namespace DB
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{
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/** DateTime64 is same as DateTime, but it stores values as Int64 and has configurable sub-second part.
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*
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* `scale` determines number of decimal places for sub-second part of the DateTime64.
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*/
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class DataTypeDateTime64 final : public DataTypeDecimalBase<DateTime64>, public TimezoneMixin
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{
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public:
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using Base = DataTypeDecimalBase<DateTime64>;
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static constexpr UInt8 default_scale = 3;
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static constexpr auto family_name = "DateTime64";
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static constexpr auto type_id = TypeIndex::DateTime64;
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explicit DataTypeDateTime64(UInt32 scale_, const std::string & time_zone_name = "");
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// reuse timezone from other DateTime/DateTime64
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DataTypeDateTime64(UInt32 scale_, const TimezoneMixin & time_zone_info);
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const char * getFamilyName() const override { return family_name; }
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std::string doGetName() const override;
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TypeIndex getTypeId() const override { return type_id; }
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bool equals(const IDataType & rhs) const override;
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bool canBePromoted() const override { return false; }
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bool canBeUsedAsVersion() const override { return true; }
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protected:
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SerializationPtr doGetDefaultSerialization() const override;
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};
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}
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