The high-performance, in-process, external C and C++ user-defined functions available with the IQ_IDA license.
The v3 API requires either the IQ_UDF or IQ_IDA license. The v4 API requires the IQ_IDA license.
| UDF Type | Input Parameters | Return | API | See: |
|---|---|---|---|---|
| Scalar UDF | Scalar | Single scalar value | v3, v4 | Declaring and Defining Scalar User-Defined Functions |
| Aggregate UDF | Scalar | Single scalar value | v3, v4 | Declaring and Defining Aggregate UDFs |
| Table UDF | Scalar | Table | v4 | Table UDFs and TPFs |
| Table parameterized function (TPF) | Scalar and table | Table | v4 | Table Parameterized Functions |
These UDFs can be deterministic or nondeterministic. The result of a function can be determined by the input parameters and data (deterministic), or by some random behavior (nondeterministic). Parameters of nondeterministic UDFs typically need a random seed as one of the input parameters.