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- from django.db.models import DecimalField, DurationField, Func
-
-
- class IntervalToSeconds(Func):
- function = ''
- template = """
- EXTRACT(day from %(expressions)s) * 86400 +
- EXTRACT(hour from %(expressions)s) * 3600 +
- EXTRACT(minute from %(expressions)s) * 60 +
- EXTRACT(second from %(expressions)s)
- """
-
- def __init__(self, expression, *, output_field=None, **extra):
- super().__init__(expression, output_field=output_field or DecimalField(), **extra)
-
-
- class SecondsToInterval(Func):
- function = 'NUMTODSINTERVAL'
- template = "%(function)s(%(expressions)s, 'SECOND')"
-
- def __init__(self, expression, *, output_field=None, **extra):
- super().__init__(expression, output_field=output_field or DurationField(), **extra)
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