Changing a Column Data Type and Statistics - Analytics Database - Teradata Vantage

SQL Data Definition Language Detailed Topics

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
2023-07-11
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B035-1184
lifecycle
latest
Product Category
Teradata Vantage™

If you change a column data type using an ALTER TABLE request, all the statistics on a base table that reference the column are no longer used. Recollecting the statistics on the modified column makes them usable again.