Functions

A function specifies a value. Functions are of two types, column functions and scalar functions. Scalar functions are a CA Datacom/DB extension.

Scalar functions can be nested within scalar functions or column functions, and column functions can be nested within scalar functions, but a column function cannot be nested within another column function. An expression in a column function must therefore not include another column function. See Rules for Scalar Functions for more information on nesting using scalar functions.

Following is the functions syntax diagram:

Note: Scalar functions are a CA Datacom/DB extension. See Scalar Functions.

►►─┬─ column functions ─┬─────────────────────────────────────────────────────►◄
   └─ scalar functions ─┘