A Boolean conditional expression, including scalar comparison conditions using, for example, any of the following:
- =
- <>
- >
- >=
Also see Teradata Vantage™ - SQL Functions, Expressions, and Predicates, B035-1145.
When a CHECK constraint is part of the column definition, then a search condition cannot reference any columns other than the one being defined, nor are aggregate functions allowed.
Also see CREATE TABLE in Teradata Vantage™ - SQL Data Definition Language Detailed Topics, B035-1184.