mirror of
https://github.com/ClickHouse/ClickHouse.git
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97f2a2213e
* Move some code outside dbms/src folder * Fix paths
676 lines
17 KiB
C++
676 lines
17 KiB
C++
#pragma once
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#include <Core/Types.h>
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#include <Core/DecimalFunctions.h>
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#include <Common/Exception.h>
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#include <common/DateLUTImpl.h>
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#include <Columns/ColumnVector.h>
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#include <Columns/ColumnDecimal.h>
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#include <Functions/FunctionHelpers.h>
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#include <Functions/extractTimeZoneFromFunctionArguments.h>
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#include <DataTypes/DataTypeDateTime.h>
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#include <DataTypes/DataTypeDateTime64.h>
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int ILLEGAL_TYPE_OF_ARGUMENT;
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extern const int ILLEGAL_COLUMN;
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}
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/** Transformations.
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* Represents two functions - from datetime (UInt32) and from date (UInt16).
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*
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* Also, the "factor transformation" F is defined for the T transformation.
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* This is a transformation of F such that its value identifies the region of monotonicity for T
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* (for a fixed value of F, the transformation T is monotonic).
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*
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* Or, figuratively, if T is similar to taking the remainder of division, then F is similar to division.
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*
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* Example: for transformation T "get the day number in the month" (2015-02-03 -> 3),
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* factor-transformation F is "round to the nearest month" (2015-02-03 -> 2015-02-01).
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*/
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static inline UInt32 dateIsNotSupported(const char * name)
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{
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throw Exception("Illegal type Date of argument for function " + std::string(name), ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
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}
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/// This factor transformation will say that the function is monotone everywhere.
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struct ZeroTransform
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{
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static inline UInt16 execute(UInt32, const DateLUTImpl &) { return 0; }
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static inline UInt16 execute(UInt16, const DateLUTImpl &) { return 0; }
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};
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struct ToDateImpl
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{
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static constexpr auto name = "toDate";
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static inline UInt16 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return UInt16(time_zone.toDayNum(t));
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}
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static inline UInt16 execute(UInt16 d, const DateLUTImpl &)
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{
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return d;
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}
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using FactorTransform = ZeroTransform;
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};
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struct ToStartOfDayImpl
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{
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static constexpr auto name = "toStartOfDay";
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static inline UInt32 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toDate(t);
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}
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static inline UInt32 execute(UInt16 d, const DateLUTImpl & time_zone)
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{
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return time_zone.toDate(DayNum(d));
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}
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using FactorTransform = ZeroTransform;
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};
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struct ToMondayImpl
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{
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static constexpr auto name = "toMonday";
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static inline UInt16 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toFirstDayNumOfWeek(time_zone.toDayNum(t));
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}
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static inline UInt16 execute(UInt16 d, const DateLUTImpl & time_zone)
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{
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return time_zone.toFirstDayNumOfWeek(DayNum(d));
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}
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using FactorTransform = ZeroTransform;
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};
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struct ToStartOfMonthImpl
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{
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static constexpr auto name = "toStartOfMonth";
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static inline UInt16 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toFirstDayNumOfMonth(time_zone.toDayNum(t));
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}
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static inline UInt16 execute(UInt16 d, const DateLUTImpl & time_zone)
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{
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return time_zone.toFirstDayNumOfMonth(DayNum(d));
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}
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using FactorTransform = ZeroTransform;
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};
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struct ToStartOfQuarterImpl
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{
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static constexpr auto name = "toStartOfQuarter";
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static inline UInt16 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toFirstDayNumOfQuarter(time_zone.toDayNum(t));
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}
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static inline UInt16 execute(UInt16 d, const DateLUTImpl & time_zone)
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{
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return time_zone.toFirstDayNumOfQuarter(DayNum(d));
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}
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using FactorTransform = ZeroTransform;
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};
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struct ToStartOfYearImpl
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{
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static constexpr auto name = "toStartOfYear";
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static inline UInt16 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toFirstDayNumOfYear(time_zone.toDayNum(t));
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}
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static inline UInt16 execute(UInt16 d, const DateLUTImpl & time_zone)
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{
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return time_zone.toFirstDayNumOfYear(DayNum(d));
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}
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using FactorTransform = ZeroTransform;
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};
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struct ToTimeImpl
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{
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static constexpr auto name = "toTime";
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/// When transforming to time, the date will be equated to 1970-01-02.
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static inline UInt32 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toTime(t) + 86400;
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}
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static inline UInt32 execute(UInt16, const DateLUTImpl &)
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{
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return dateIsNotSupported(name);
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}
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using FactorTransform = ToDateImpl;
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};
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struct ToStartOfMinuteImpl
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{
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static constexpr auto name = "toStartOfMinute";
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static inline UInt32 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toStartOfMinute(t);
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}
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static inline UInt32 execute(UInt16, const DateLUTImpl &)
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{
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return dateIsNotSupported(name);
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}
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using FactorTransform = ZeroTransform;
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};
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struct ToStartOfFiveMinuteImpl
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{
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static constexpr auto name = "toStartOfFiveMinute";
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static inline UInt32 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toStartOfFiveMinute(t);
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}
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static inline UInt32 execute(UInt16, const DateLUTImpl &)
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{
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return dateIsNotSupported(name);
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}
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using FactorTransform = ZeroTransform;
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};
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struct ToStartOfTenMinutesImpl
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{
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static constexpr auto name = "toStartOfTenMinutes";
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static inline UInt32 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toStartOfTenMinutes(t);
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}
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static inline UInt32 execute(UInt16, const DateLUTImpl &)
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{
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return dateIsNotSupported(name);
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}
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using FactorTransform = ZeroTransform;
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};
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struct ToStartOfFifteenMinutesImpl
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{
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static constexpr auto name = "toStartOfFifteenMinutes";
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static inline UInt32 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toStartOfFifteenMinutes(t);
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}
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static inline UInt32 execute(UInt16, const DateLUTImpl &)
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{
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return dateIsNotSupported(name);
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}
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using FactorTransform = ZeroTransform;
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};
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/// Round to start of half-an-hour length interval with unspecified offset. This transform is specific for Yandex.Metrica.
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struct TimeSlotImpl
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{
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static constexpr auto name = "timeSlot";
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static inline UInt32 execute(UInt32 t, const DateLUTImpl &)
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{
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return t / 1800 * 1800;
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}
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static inline UInt32 execute(UInt16, const DateLUTImpl &)
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{
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return dateIsNotSupported(name);
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}
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using FactorTransform = ZeroTransform;
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};
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struct ToStartOfHourImpl
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{
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static constexpr auto name = "toStartOfHour";
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static inline UInt32 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toStartOfHour(t);
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}
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static inline UInt32 execute(UInt16, const DateLUTImpl &)
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{
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return dateIsNotSupported(name);
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}
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using FactorTransform = ZeroTransform;
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};
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struct ToYearImpl
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{
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static constexpr auto name = "toYear";
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static inline UInt16 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toYear(t);
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}
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static inline UInt16 execute(UInt16 d, const DateLUTImpl & time_zone)
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{
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return time_zone.toYear(DayNum(d));
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}
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using FactorTransform = ZeroTransform;
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};
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struct ToQuarterImpl
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{
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static constexpr auto name = "toQuarter";
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static inline UInt8 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toQuarter(t);
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}
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static inline UInt8 execute(UInt16 d, const DateLUTImpl & time_zone)
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{
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return time_zone.toQuarter(DayNum(d));
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}
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using FactorTransform = ToStartOfYearImpl;
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};
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struct ToMonthImpl
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{
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static constexpr auto name = "toMonth";
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static inline UInt8 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toMonth(t);
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}
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static inline UInt8 execute(UInt16 d, const DateLUTImpl & time_zone)
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{
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return time_zone.toMonth(DayNum(d));
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}
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using FactorTransform = ToStartOfYearImpl;
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};
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struct ToDayOfMonthImpl
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{
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static constexpr auto name = "toDayOfMonth";
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static inline UInt8 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toDayOfMonth(t);
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}
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static inline UInt8 execute(UInt16 d, const DateLUTImpl & time_zone)
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{
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return time_zone.toDayOfMonth(DayNum(d));
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}
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using FactorTransform = ToStartOfMonthImpl;
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};
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struct ToDayOfWeekImpl
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{
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static constexpr auto name = "toDayOfWeek";
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static inline UInt8 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toDayOfWeek(t);
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}
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static inline UInt8 execute(UInt16 d, const DateLUTImpl & time_zone)
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{
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return time_zone.toDayOfWeek(DayNum(d));
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}
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using FactorTransform = ToMondayImpl;
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};
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struct ToDayOfYearImpl
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{
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static constexpr auto name = "toDayOfYear";
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static inline UInt16 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toDayOfYear(t);
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}
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static inline UInt16 execute(UInt16 d, const DateLUTImpl & time_zone)
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{
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return time_zone.toDayOfYear(DayNum(d));
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}
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using FactorTransform = ToStartOfYearImpl;
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};
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struct ToHourImpl
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{
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static constexpr auto name = "toHour";
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static inline UInt8 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toHour(t);
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}
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static inline UInt8 execute(UInt16, const DateLUTImpl &)
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{
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return dateIsNotSupported(name);
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}
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using FactorTransform = ToDateImpl;
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};
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struct ToMinuteImpl
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{
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static constexpr auto name = "toMinute";
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static inline UInt8 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toMinute(t);
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}
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static inline UInt8 execute(UInt16, const DateLUTImpl &)
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{
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return dateIsNotSupported(name);
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}
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using FactorTransform = ToStartOfHourImpl;
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};
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struct ToSecondImpl
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{
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static constexpr auto name = "toSecond";
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static inline UInt8 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toSecond(t);
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}
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static inline UInt8 execute(UInt16, const DateLUTImpl &)
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{
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return dateIsNotSupported(name);
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}
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using FactorTransform = ToStartOfMinuteImpl;
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};
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struct ToISOYearImpl
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{
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static constexpr auto name = "toISOYear";
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static inline UInt16 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toISOYear(time_zone.toDayNum(t));
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}
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static inline UInt16 execute(UInt16 d, const DateLUTImpl & time_zone)
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{
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return time_zone.toISOYear(DayNum(d));
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}
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using FactorTransform = ZeroTransform;
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};
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struct ToStartOfISOYearImpl
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{
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static constexpr auto name = "toStartOfISOYear";
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static inline UInt16 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toFirstDayNumOfISOYear(time_zone.toDayNum(t));
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}
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static inline UInt16 execute(UInt16 d, const DateLUTImpl & time_zone)
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{
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return time_zone.toFirstDayNumOfISOYear(DayNum(d));
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}
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using FactorTransform = ZeroTransform;
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};
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struct ToISOWeekImpl
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{
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static constexpr auto name = "toISOWeek";
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static inline UInt8 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toISOWeek(time_zone.toDayNum(t));
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}
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static inline UInt8 execute(UInt16 d, const DateLUTImpl & time_zone)
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{
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return time_zone.toISOWeek(DayNum(d));
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}
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using FactorTransform = ToISOYearImpl;
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};
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struct ToRelativeYearNumImpl
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{
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static constexpr auto name = "toRelativeYearNum";
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static inline UInt16 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toYear(t);
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}
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static inline UInt16 execute(UInt16 d, const DateLUTImpl & time_zone)
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{
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return time_zone.toYear(DayNum(d));
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}
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using FactorTransform = ZeroTransform;
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};
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struct ToRelativeQuarterNumImpl
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{
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static constexpr auto name = "toRelativeQuarterNum";
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static inline UInt16 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toRelativeQuarterNum(t);
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}
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static inline UInt16 execute(UInt16 d, const DateLUTImpl & time_zone)
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{
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return time_zone.toRelativeQuarterNum(DayNum(d));
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}
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using FactorTransform = ZeroTransform;
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};
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struct ToRelativeMonthNumImpl
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{
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static constexpr auto name = "toRelativeMonthNum";
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static inline UInt16 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toRelativeMonthNum(t);
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}
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static inline UInt16 execute(UInt16 d, const DateLUTImpl & time_zone)
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{
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return time_zone.toRelativeMonthNum(DayNum(d));
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}
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using FactorTransform = ZeroTransform;
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};
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struct ToRelativeWeekNumImpl
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{
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static constexpr auto name = "toRelativeWeekNum";
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static inline UInt16 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toRelativeWeekNum(t);
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}
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static inline UInt16 execute(UInt16 d, const DateLUTImpl & time_zone)
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{
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return time_zone.toRelativeWeekNum(DayNum(d));
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}
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using FactorTransform = ZeroTransform;
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};
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struct ToRelativeDayNumImpl
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{
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static constexpr auto name = "toRelativeDayNum";
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static inline UInt16 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toDayNum(t);
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}
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static inline UInt16 execute(UInt16 d, const DateLUTImpl &)
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{
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return static_cast<DayNum>(d);
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}
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using FactorTransform = ZeroTransform;
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};
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struct ToRelativeHourNumImpl
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{
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static constexpr auto name = "toRelativeHourNum";
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static inline UInt32 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toRelativeHourNum(t);
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}
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static inline UInt32 execute(UInt16 d, const DateLUTImpl & time_zone)
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{
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return time_zone.toRelativeHourNum(DayNum(d));
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}
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using FactorTransform = ZeroTransform;
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};
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struct ToRelativeMinuteNumImpl
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{
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static constexpr auto name = "toRelativeMinuteNum";
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static inline UInt32 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toRelativeMinuteNum(t);
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}
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static inline UInt32 execute(UInt16 d, const DateLUTImpl & time_zone)
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{
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return time_zone.toRelativeMinuteNum(DayNum(d));
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}
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using FactorTransform = ZeroTransform;
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};
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struct ToRelativeSecondNumImpl
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{
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static constexpr auto name = "toRelativeSecondNum";
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static inline UInt32 execute(UInt32 t, const DateLUTImpl &)
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{
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return t;
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}
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static inline UInt32 execute(UInt16 d, const DateLUTImpl & time_zone)
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{
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return time_zone.fromDayNum(DayNum(d));
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}
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using FactorTransform = ZeroTransform;
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};
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struct ToYYYYMMImpl
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{
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static constexpr auto name = "toYYYYMM";
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static inline UInt32 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toNumYYYYMM(t);
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}
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static inline UInt32 execute(UInt16 d, const DateLUTImpl & time_zone)
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{
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return time_zone.toNumYYYYMM(static_cast<DayNum>(d));
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}
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using FactorTransform = ZeroTransform;
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};
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struct ToYYYYMMDDImpl
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{
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static constexpr auto name = "toYYYYMMDD";
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static inline UInt32 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toNumYYYYMMDD(t);
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}
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static inline UInt32 execute(UInt16 d, const DateLUTImpl & time_zone)
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{
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return time_zone.toNumYYYYMMDD(static_cast<DayNum>(d));
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}
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using FactorTransform = ZeroTransform;
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};
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struct ToYYYYMMDDhhmmssImpl
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{
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static constexpr auto name = "toYYYYMMDDhhmmss";
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static inline UInt64 execute(UInt32 t, const DateLUTImpl & time_zone)
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{
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return time_zone.toNumYYYYMMDDhhmmss(t);
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}
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static inline UInt64 execute(UInt16 d, const DateLUTImpl & time_zone)
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{
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return time_zone.toNumYYYYMMDDhhmmss(time_zone.toDate(static_cast<DayNum>(d)));
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}
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using FactorTransform = ZeroTransform;
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};
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template <typename FromType, typename ToType, typename Transform>
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struct Transformer
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{
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template <typename FromTypeVector, typename ToTypeVector>
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static void vector(const FromTypeVector & vec_from, ToTypeVector & vec_to, const DateLUTImpl & time_zone, const Transform & transform)
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{
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size_t size = vec_from.size();
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vec_to.resize(size);
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for (size_t i = 0; i < size; ++i)
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vec_to[i] = transform.execute(vec_from[i], time_zone);
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}
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};
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template <typename FromDataType, typename ToDataType, typename Transform>
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struct DateTimeTransformImpl
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|
{
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static void execute(Block & block, const ColumnNumbers & arguments, size_t result, size_t /*input_rows_count*/, const Transform & transform = {})
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{
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using Op = Transformer<typename FromDataType::FieldType, typename ToDataType::FieldType, Transform>;
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const DateLUTImpl & time_zone = extractTimeZoneFromFunctionArguments(block, arguments, 1, 0);
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const ColumnPtr source_col = block.getByPosition(arguments[0]).column;
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if (const auto * sources = checkAndGetColumn<typename FromDataType::ColumnType>(source_col.get()))
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{
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auto mutable_result_col = block.getByPosition(result).type->createColumn();
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auto * col_to = assert_cast<typename ToDataType::ColumnType *>(mutable_result_col.get());
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Op::vector(sources->getData(), col_to->getData(), time_zone, transform);
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block.getByPosition(result).column = std::move(mutable_result_col);
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}
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else
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|
{
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throw Exception("Illegal column " + block.getByPosition(arguments[0]).column->getName()
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+ " of first argument of function " + Transform::name,
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ErrorCodes::ILLEGAL_COLUMN);
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}
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}
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};
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}
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