org.apache.hadoop.hive.ql.udf

Class UDFSqrt

java.lang.Object

org.apache.hadoop.hive.ql.exec.UDF

org.apache.hadoop.hive.ql.udf.UDFSqrt

public class UDFSqrt
extends UDF

Implementation of the SQRT UDF found in many databases.

Constructor Summary

Constructors

Constructor and Description
UDFSqrt()

Method Summary

Modifier and Type	Method and Description
DoubleWritable	evaluate(DoubleWritable i) Return NULL for NULL or negative inputs; otherwise, return the square root.

Methods inherited from class org.apache.hadoop.hive.ql.exec.UDF

getRequiredFiles, getRequiredJars, getResolver, setResolver

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

UDFSqrt

public UDFSqrt()

Method Detail

evaluate

public DoubleWritable evaluate(DoubleWritable i)

Return NULL for NULL or negative inputs; otherwise, return the square root.