pig tutorial - apache pig tutorial - Apache Pig - GetYear() - pig latin - apache pig - pig hadoop




What is GetYear() method?

  • The getYear() method returns the year in the specified date according to local time.
  • Because getYear() does not return full years ("year 2000 problem"), it is no longer used and has been replaced by the getFullYear() method.

Syntax

dateObj.getYear()


 get year in apache pig

Learn apache pig - apache pig tutorial - get year in apache pig - apache pig examples - apache pig programs

GetYear() function in Apache Pig

  • This function accepts a date-time object as parameter and returns the current year from the given date-time object.

Syntax

grunt> GetYear(datetime)

Example

  • Ensure that we have a file named wikitechy_date.txt in the HDFS directory /pig_data/ as shown below.
  • This file contains the date-of-birth details of a particular person, it has person id, date and time.

wikitechy_date.txt

001,1989/09/26 09:00:00
002,1980/06/20 10:22:00
003,1990/12/19 03:11:44

We have loaded this file into Pig with a relation named date_data as given below.

grunt> date_data = LOAD 'hdfs://localhost:9000/pig_data/wikitechy_date.txt' USING PigStorage(',')
   as (id:int,date:chararray);
  • Following is an example of the GetYear() function.
  • It will retrive the current year from the given date-time object.
  • So, First we can generate the date-time objects of all employees using todate() function as given below.
grunt> todate_data = foreach date_data generate ToDate(date,'yyyy/MM/dd HH:mm:ss')
   as (date_time:DateTime );
  
grunt> Dump todate_data;
(1989-09-26T09:00:00.000+05:30) 
(1980-06-20T10:22:00.000+05:30) 
(1990-12-19T03:11:44.000+05:30) 
  • Now we get the year from the date-of-birth of each employee using the GetYear() function and store it in the relation named getyear_data.
grunt> getyear_data = foreach todate_data generate (date_time), GetYear(date_time);

Verification

  • Now verify the contents of the getyear_data relation using Dump operator as given below.
grunt> Dump getyear_data;

Output

The above statement stores the result in the relation named getyear_data.

(1989-09-26T09:00:00.000+05:30,1989) 
(1980-06-20T10:22:00.000+05:30,1980) 
(1990-12-19T03:11:44.000+05:30,1990) 

Related Searches to Apache Pig - GetYear()