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Scalar-valued user-defined functions may be deterministic or non-deterministic. A deterministic function always returns the same result when it is called with a specific set of input parameters.

Integrating these new user-defined scalar and aggregate functions with Aster MapReduce and Graph functions, Aster 6.20 enables data scientists to integrate diverse programming models in a single SQL ...

User-defined functions are extensions or additions to the existing built-in functions of the SQL language. A user-defined function can be a scalar function, which returns a single value each time it ...

CREATE FUNCTION (External Scalar) This statement is used to register a user-defined external scalar function with an application server. A scalar function returns a single value each time it is ...