*null-value*

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.

See aodbc.htm for more information on Allegro ODBC.

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Created 2019.8.20.