positive function
Applies to: 
Databricks SQL Databricks Runtime
Returns the value of expr. This function is a synonym for + (plus sign) unary operator.
Syntax
positive(expr)
Arguments
expr: An expression that evaluates to a numeric or interval.
Returns
The result type matches the argument.
This function is a no-op.
Examples
SQL
> SELECT positive(1);
1
> SELECT positive(-1);
-1