16.20 - Effect of Changing Column Data Type on Statistics - Teradata Database - Teradata Vantage NewSQL Engine

Teradata Vantage™ SQL Data Definition Language Detailed Topics

Product
Teradata Database
Teradata Vantage NewSQL Engine
Release Number
16.20
Release Date
March 2019
Content Type
Programming Reference
Publication ID
B035-1184-162K
Language
English (United States)

If you change the data type of a column, Teradata Database no longer uses the statistics that reference the column. Recollecting the statistics on the modified column makes them usable again.