ifnull function

Applies to: Databricks SQL Databricks Runtime

Returns expr2 if expr1 is NULL, or expr1 otherwise. This function is a synonym for coalesce(expr1, expr2) with two arguments.

Syntax

ifnull(expr1, expr2)

Arguments

• expr1: An expression of any type.
• expr2: An expression sharing a least common type with expr1.

Returns

The result type is the least common type of expr1 and expr2.

Examples

> SELECT ifnull(NULL, array('2'));
 [2]

Related functions

• coalesce function
• if function
• nvl function
• nvl2 function