nvl function (Databricks SQL)

Returns expr2 if expr1 is NULL, or expr1 otherwise.

Syntax

nvl(expr1, expr2)

Arguments

  • expr1: An expression of any type.

  • expr2: An expression that shares a least common type with expr1.

Returns

The result type is the least common type of the argument types.

This function is a synonym for coalesce(expr1, expr2).

Examples

> SELECT nvl(NULL, 2);
 2
> SELECT nvl(3, 2);
 3