org.apache.hadoop.hive.ql.udf

Class UDFSqrt

java.lang.Object

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

org.apache.hadoop.hive.ql.udf.UDFMath

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

public class UDFSqrt
extends UDFMath

Implementation of the SQRT UDF found in many databases.

Constructor Summary

Constructors

Constructor and Description
UDFSqrt()

Method Summary

Methods

Modifier and Type	Method and Description
protected DoubleWritable	doEvaluate(DoubleWritable a) Return NULL for negative inputs; otherwise, return the square root.

Methods inherited from class org.apache.hadoop.hive.ql.udf.UDFMath

evaluate, evaluate

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

doEvaluate

protected DoubleWritable doEvaluate(DoubleWritable a)

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

Specified by:

doEvaluate in class UDFMath