any_null

Description

Returns a null value of type any. This is important, because some functions, like case(), return more convenient outputs if all their arguments are of the same type.

Return type

any

Domain

This is a scalar function (calculates a single output value for a single input row.)

Categories

Usage

any_null( )

Examples

make_col positive_or_null:case(x > 0, x, true, any_null())

Create a column ‘positive_or_null’ which is either a positive any, or the null any.