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Programs
Language basics
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Programs
Predefined constants
The language defines a set of global constants that can be used in the programs.
NULL
The
NULL
constant is provided as the "nil" value.
TRUE
TRUE
is a predefined constant to be used in boolean expressions.
FALSE
FALSE
is a predefined constant to be used in boolean expressions.
NOTFOUND
NOTFOUND
is a predefined constant used to check if an SQL statement returns rows.