The standard Unary Minus (-) operator is supported, generating -expression. Within Teradata, this operator automatically converts numeric operands to the expected result type before they are applied. Character type data is converted to FLOAT if possible before being applied. For information on the resulting data types and other specific usage information including binary arithmetic result data types, see Teradata® Database SQL Functions, Operators, Expressions, and Predicates, B035-1145. When dragging a Unary Minus into a variable, the following tree element is created.
Variable Creation > Input > Variables: SQL Elements pane - Arithmetic > Unary Minus
Columns and/or other expressions can be moved over the (empty) branch of the tree.
There are no special properties for the Unary Minus function.