in Big Data | Hadoop by (2.6k points)
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);

Related questions

0 votes
asked Apr 24, 2020 in Big Data | Hadoop by Hodge (2.6k points)
0 votes
asked Apr 24, 2020 in Big Data | Hadoop by Hodge (2.6k points)
0 votes
asked Apr 6, 2020 in Big Data | Hadoop by GeorgeBell (5.2k points)
...