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from .intcolumn import Int64Column
class IntervalColumn(Int64Column):
pass
class IntervalDayColumn(IntervalColumn):
ch_type = 'IntervalDay'
class IntervalWeekColumn(IntervalColumn):
ch_type = 'IntervalWeek'
class IntervalMonthColumn(IntervalColumn):
ch_type = 'IntervalMonth'
class IntervalYearColumn(IntervalColumn):
ch_type = 'IntervalYear'
class IntervalHourColumn(IntervalColumn):
ch_type = 'IntervalHour'
class IntervalMinuteColumn(IntervalColumn):
ch_type = 'IntervalMinute'
class IntervalSecondColumn(IntervalColumn):
ch_type = 'IntervalSecond'
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