... operand1 operator operand2 ...
In logical expressions with relational operators, two operands are linked to a relational expression with a relational operator.
The logical expression compares the content of the operand operand1 according to the operator operator with the content of the operand operand2.
Depending on the operands that are compared to each other, four groups of relational operators can be distinguished:
For operand1 and operand2, data objects can use built-in functions (since release 6.10) and functional methods. The latter use the return value as operand.