Operator

Operator

A comparison or evaluation used in rules to compare two things (usually a keys and a value) or assert a statement.

(Relational) operators are used in used when creating rules in a condition, to give a result of true or false, by comparing two items, or by checking a property of a single item.

Table 1. Relational Operators
Operator	Meanin	Function	Comment
`==`	Equals	Exact mathematical match.
`!=`	Does not equal	Exact mathematical difference.
`Like`	Inclusive word-match	Does the target contain the value?
`Not like`	Exclusive word-match	Does the target not contain the value?
`Different from`	Exact word-match	Not an exact match.
`Is empty`		Key has no value.
`Is not empty`		Key has any value.
`<`	Lesser than	Number is lower than value.
`<=`	Equal to or lesser than	Number is lower than value, or the same.
`>`	Greater than	Number is higher than value.
`>=`	Equal to or greater than	Number is higher than value, or the same.
`Between`		Is the key within of the interval given by the values?
`Not Between`		Is the key not within of the interval given by the values?
`Remainder (%)`		Is the key evenly divisible with the value?	(Here % means modulo, not percentage.)

Examples:

In the rule Age-(number) > 45, the operator verifies that the number Age is above 45.
In the rule Name-(text) IS EMPTY, the operator checks if the text key Name has no value.