AND Operator
 
Syntax
  result=numeric-expression1 AND numeric-expression2
 
The AND logical-conjunction operator compares corresponding bits in two
numeric expressions and sets the corresponding bit in the result to 1
if both bits are 1. The AND operator use this "truth table":
 
Bit in First Expression   Bit in Second Expression   Bit in Result
           1                       1                      1
           1                       0                      0
           0                       1                      0
           0                       0                      0