Boolean Expressions

<STRING EXPRESSION> <BOOLEAN COMPARE> <STRING EXPRESSION> 
<NUMERIC EXPRESSION> <BOOLEAN COMPARE> <NUMERIC EXPRESSION> 
NOT(<BOOLEAN EXPRESSION>) 

<STRING EXPRESSION>

= a string variable, string constant or any combination with concatenation

A numeric expression cannot be compared to a string expression.

< (less than)

Expression	Result
1< 2	true
2<2	false
2<1	false

<= (less than or equal to)

Expression	Result
1<=2	true
2<=2	true
2<=1	false

> (greater than)

Expression	Result
1> 2	false
2>2	false
2>1	true

>= (greater than or equal to)

Expression	Result
1>=2	false
2>=2	true
2>=1	true

= (equal to)

Expression	Result
1=2	false
2=2	true
"A"="AA"	false
"A"="A"	true

<> (not equal to)

Expression	Result
1<>2	true
2<>2	false
"A"<>"AA"	true
"A"<>"A"	false