16.20 - HELP COLUMN and Indexes - Teradata Database - Teradata Vantage NewSQL Engine

Teradata Vantage™ SQL Data Definition Language Detailed Topics

Teradata Database
Teradata Vantage NewSQL Engine
Release Number
March 2019
Content Type
Programming Reference
Publication ID
English (United States)

If the column for which information is requested defines a single-column index, then that is reported along with the uniqueness and type of index. HELP COLUMN returns index information for single-column indexes only. For multiple-column indexes, the columns are reported as not being used in an index.

HELP COLUMN does not provide information about whether a column is used in the partitioning expression of a partitioned primary index. Use SHOW TABLE (see SHOW object) or the system view DBC.IndexConstraintsV (see Teradata Vantage™ Data Dictionary, B035-1092 for further information) to obtain the partitioning information.

HELP COLUMN returns the information indicated in HELP COLUMN Information and Attributes.