variant_imp

Performs a bitwise implication operation.

The left operand.

The right operand.

Variant Implication Table

If left is	If right is	then the result is
TRUE	TRUE	TRUE
TRUE	FALSE	TRUE
TRUE	NULL	TRUE
FALSE	TRUE	TRUE
FALSE	FALSE	TRUE
FALSE	NULL	TRUE
NULL	TRUE	TRUE
NULL	FALSE	NULL
NULL	NULL	NULL