null-value

$Revision: 1.1.2.2 $

Variable

Package: DBI

This variable is used to represent null values in a row of values returned by a database access (such rows can contain null values). When these null values are to be returned to a Lisp program by Allegro ODBC, it represents them by the value in this variable. The initial value for *null-value* is nil.

This symbol is associated with the Allegro CL ODBC (AODBC) interface, version 2. Version 2 is new in Allegro CL 5.0.1. It is incompatible with the earlier version 1. Not all customers will have Allegro ODBC version 2. Contact your Franz Inc. sales representative for more information.

Allegro ODBC version 2 is described in aodbc_v2.htm.

The general documentation description is in introduction.htm. The index in index.htm.