neq

neq is an abbreviation for "not equal" used to express inequality between two values or objects. It is used in mathematics, logic, and computer science as a textual or identifier for the not-equal relation.

In mathematics, the not-equal relation is represented by the symbol ≠; when typed in plain text, "neq" is sometimes used in documentation or code as a stand-in. The relation is true whenever the operands denote different quantities or objects.

In Common Lisp, neq is a predicate that tests whether two objects are not the same object; it is the negation of eq. Other equality predicates include eql and equal, which test numeric values or structural equality respectively.

In most mainstream programming languages, not-equal comparisons are implemented with operators such as != or <>, depending on language. Some libraries or languages may define a function or method named neq to perform inequality checks; however, this is not universal.

In SQL, not equal is expressed with <> or !=; there is no standard neq function in the SQL language itself. The exact behavior can vary with data types and collation.