16.20 - (column_name) - Teradata Database - Teradata Vantage NewSQL Engine

Teradata Vantage™ SQL Data Definition Language Syntax and Examples

Product
Teradata Database
Teradata Vantage NewSQL Engine
Release Number
16.20
Published
March 2019
Language
English (United States)
Last Update
2019-05-24
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Group the values from the specified column set of 1 or more columns into the same partition of a column-partitioned table. You can specify a single column in a partition.

This option is only valid for column-partitioned tables.

You should consider grouping columns into a column partition when either of the following conditions occur:
  • The columns are frequently accessed together by queries.
  • The columns are infrequently accessed or autocompression on the individual columns or subsets of columns is not effective.

You cannot specify a column to be in more than one partition.

If you do not specify a column grouping for a COLUMN specification in the PARTITION BY clause, Teradata Database defines a column partition for each individual column and column group specified in the column list for table_name.