DROP STATISTICS (Optimizer Form) Request | Teradata Vantage - 17.10 - Lock-Related Restrictions - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Data Definition Language Detailed Topics

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
July 2021
Content Type
Programming Reference
Publication ID
B035-1184-171K
Language
English (United States)

The system places row-hash-level WRITE locks on DBC.StatsTbl while dropping statistics. These locks prevent parsing of new requests against the data table for which the statistics had been collected until the drop operation completes.