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

UDFSqrt()

Method Summary

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.