LET

An untyped LET clause evaluates expressions for each incoming row and introduces named bindings. Bindings may contain scalars, lists or graph element references.

LET base = 6, answer = base * 7
FILTER answer > 40
RETURN answer;

An element alias preserves graph, element kind and identity. Subsequent property lookups resolve that element.

MATCH (p:Person {name: 'Alice'})
LET person = p
RETURN person.name AS name;

Typed LET VALUE definitions are accepted by the parser but not executed in query pipelines. The scalar LET ... IN ... END expression is also syntax only; it is distinct from this executable clause. Use session parameter declarations when you need supported type validation.