in Big Data | Hadoop by
Data Sampling

When there is a large set of data, and you want to retrieve (select and analyze) a subset of data, this technique is called data sampling.

select * from bucket_table tablesample(bucket 1 out of 5 on id);
Learn More with Madanswer

Related questions

0 votes
asked Apr 7, 2020 in Big Data | Hadoop by GeorgeBell