If values in the specified column are null, returns the value.
Can be used in conjunction with when
to specify a default value for expressions.
otherwise(x, value)# S4 method for Column
otherwise(x, value)
a Column.
value to replace when the corresponding entry in x
is NA.
Can be a single value or a Column.
Other colum_func:
alias()
,
between()
,
cast()
,
endsWith()
,
over()
,
startsWith()
,
substr()