RandomFunction (Apache Calcite API)

java.lang.Object

org.apache.calcite.runtime.RandomFunction

public class RandomFunction extends Object

Function object for RAND and RAND_INTEGER, with and without seed.

Constructor Summary

Constructors

Constructor

Description

RandomFunction()

Creates a RandomFunction.
Method Summary

Modifier and Type

Method

Description

double

rand()

Implements the RAND() SQL function.

int

randInteger(int bound)

Implements the RAND_INTEGER(bound) SQL function.

int

randIntegerSeed(int seed, int bound)

Implements the RAND_INTEGER(seed, bound) SQL function.

double

randSeed(int seed)

Implements the RAND(seed) SQL function.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details
- RandomFunction
  
  public RandomFunction()
  
  Creates a RandomFunction.
  Marked deterministic so that the code generator instantiates one once per query, not once per row.
Method Details
- rand
  
  public double rand()
  
  Implements the RAND() SQL function.
- randSeed
  
  public double randSeed(int seed)
  
  Implements the RAND(seed) SQL function.
- randInteger
  
  public int randInteger(int bound)
  
  Implements the RAND_INTEGER(bound) SQL function.
- randIntegerSeed
  
  public int randIntegerSeed(int seed, int bound)
  
  Implements the RAND_INTEGER(seed, bound) SQL function.