def _integer_to_timestamp(arg, unit='s'):
"""
Convert integer UNIX timestamp (at some resolution) to a timestamp type
Parameters
----------
unit : {'s', 'ms', 'us'}
Second (s), millisecond (ms), or microsecond (us) resolution
Returns
-------
timestamp : timestamp value expression
"""
op = _ops.TimestampFromUNIX(arg, unit)
return op.to_expr()
def to_timestamp(
self,
unit: Literal["s", "ms", "us"] = "s",
) -> ir.TimestampValue:
"""Convert an integral UNIX timestamp to a timestamp expression.
Parameters
----------
unit
The resolution of `arg`
Returns
-------
TimestampValue
`self` converted to a timestamp
"""
from ibis.expr import operations as ops
return ops.TimestampFromUNIX(self, unit).to_expr()