nvl
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
nvl(expr1, expr2)
Arguments
expr1
: An expression of any type.expr2
: An expression that shares a least common type withexpr1
.
Returns
The result type is the least common type of the argument types.
Special considerations apply to VARIANT
types. See isnull function for details.
Examples
> SELECT nvl(NULL, 2);
2
> SELECT nvl(3, 2);
3