Dropping Temporal Columns - Analytics Database - Teradata Vantage

Temporal Table Support

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
VMware
Product
Analytics Database
Teradata Vantage
Release Number
17.20
Published
June 2022
Language
English (United States)
Last Update
2023-10-30
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lifecycle
latest
Product Category
Teradata Vantage™

Dropping any type of column from a transaction-time or bitemporal table requires the NONTEMPORAL privilege on the table, and the NONTEMPORAL qualifier to ALTER TABLE must be used.

Temporal columns cannot be dropped if any constraints or a join index or a trigger are defined on the table.

Temporal columns cannot be dropped if the table is partitioned on the temporal columns.

When a transaction-time column is dropped, all closed rows (all history rows in the transaction-time dimension) are deleted from the table.

When a valid-time column is dropped, all the rows that are no longer valid (all history rows in the valid-time dimension) are deleted from the table.