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Applies to: 
Databricks SQL Databricks Runtime 15.3 and above
Returns the remainder after dividend / divisor or NULL ifdivisor is 0.
Syntax
try_mod(dividend, divisor)
Arguments
dividend: An expression that evaluates to a numeric.divisor: An expression that evaluates to a numeric.
Returns
If both dividend and divisor are of DECIMAL, the result matches the divisor's type.
In all other cases, a DOUBLE.
If divisor is 0, the function returns NULL. To raise DIVIDE_BY_ZERO error instead use the mod() function.
Examples
> SELECT try_mod(2, 1.8);
0.2
> SELECT try_mod(2, 0);
NULL