Boolean Logical AND, OR, and NOT operators. You can override the natural precedence of operators by using parentheses. This operator can be used for numbers and strings. Associativity is left to right for all operators used in expressions. Relational operators can be used with all data types.
String comparisons are case-insensitive.
Not equal to operator. Less than or equal to operator. Relational operators have lower precedence than either bitwise or arithmetic operators. Operator Description NOT Logical NOT operator. AND Logical AND operator.