Defining Redshift Functions

The following properties are applicable to a Redshift Function object.

Tab	Property	Description	Additional Information
Redshift	Language	Specifies the language (SQL or plpythonu) to be used for function creation
	Volatility	Informs the query optimizer about function behavior	Immutable: Indicates that the function always returns the same results. The query optimizer pre-evaluates the function. Stable: Indicates that for same arguments, the function returns same results for all rows processed within a single statement. Volatile: Indicates that for same arguments, the function can return different results on successive calls. The function must be evaluated for every input row.
	Return Data Type	Specifies the data type of the value returned by the function
Parameters	Parameters	Indicates the list of function parameters
Parameters	Physical Data Type	Specifies the data type of a parameter