set column

A set consists of a unordered group of elements with unique values. Duplicate values will not be stored distinctly. The values of a set are stored unordered, but will return the elements in sorted order when queried. Use the set data type to store data that has a many-to-one relationship with another column.


In the following example, a set called teams stores all the teams that a cyclist has been a member of during their career. The table is cyclist_career_teams. Each team listed in the set will have a text data type.

The following example shows the table and the initial rows.

  • CQL

  • Result

CREATE TABLE IF NOT EXISTS cycling.cyclist_career_teams (
  lastname text,
  teams set<text>
 id                                   | lastname        | teams
 cb07baad-eac8-4f65-b28a-bddc06a0de23 |      ARMITSTEAD |                    {'AA Drink -', 'Boels-Dolmans Cycling Team', 'Te
am Garmin - Cervelo'}
 5b6962dd-3f90-4c93-8f61-eabfa4a803e2 |             VOS | {'Nederland bloeit', 'Rabobank Women Team', 'Rabobank-Liv Giant', 'Rabobank-Liv
 Woman Cycling Team'}
 1c9ebc13-1eab-4ad5-be87-dce433216d40 |           BRAND |   {'AA Drink -', '', 'Rabobank-Liv Giant', 'Rabobank-Liv
 Woman Cycling Team'}
 e7cd5752-bc0d-4157-a80f-7523add8dbcd | VAN DER BREGGEN |                 {'Rabobank-Liv Woman Cycling Team', 'Sengers Ladies Cycling Tea
m', 'Team Flexpoint'}

(4 rows)

Was this helpful?

Give Feedback

How can we improve the documentation?

© 2024 DataStax | Privacy policy | Terms of use

Apache, Apache Cassandra, Cassandra, Apache Tomcat, Tomcat, Apache Lucene, Apache Solr, Apache Hadoop, Hadoop, Apache Pulsar, Pulsar, Apache Spark, Spark, Apache TinkerPop, TinkerPop, Apache Kafka and Kafka are either registered trademarks or trademarks of the Apache Software Foundation or its subsidiaries in Canada, the United States and/or other countries. Kubernetes is the registered trademark of the Linux Foundation.

General Inquiries: +1 (650) 389-6000,