def coalesce(*args):
"""
Compute the first non-null value(s) from the passed arguments in
left-to-right order. This is also known as "combine_first" in pandas.
Parameters
----------
*args : variable-length value list
Examples
--------
result = coalesce(expr1, expr2, 5)
Returns
-------
coalesced : type of first provided argument
"""
return _ops.Coalesce(*args).to_expr()
def coalesce(self, *args: Value) -> Value:
"""Return the first non-null value from `args`.
Parameters
----------
args
Arguments from which to choose the first non-null value
Returns
-------
Value
Coalesced expression
Examples
--------
>>> import ibis
>>> expr1 = None
>>> expr2 = 4
>>> result = ibis.coalesce(expr1, expr2, 5)
"""
import ibis.expr.operations as ops
return ops.Coalesce([self, *args]).to_expr()