There is a series of functions that can be applied to a value (row) as an argument (
function_spec ) and supply a result.Syntax
<function_spec> ::= <arithmetic_function> | <trigonometric_function>
| <string_function> | <date_function> | <time_function>
| <extraction_function> | <special_function>
| <conversion_function>
Explanation
The arguments and results of the functions are numeric, alphanumeric or Boolean values that are subject to certain restrictions.
LONG columns are not allowed as arguments.