15.00 - Chapter 7 Built-In Functions - Teradata Database

Teradata Database SQL Functions, Operators, Expressions, and Predicates

Teradata Database
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Built-in functions, which are niladic (have no arguments), return various information about the system. Built-in functions are sometimes referred to as special registers.

The built-in functions can be used anywhere that a literal can appear.

If a SELECT statement that contains a built-in function references a table name, then the result of the query contains one row for every row of the table that satisfies the search condition.