apoc.label.exists

Details
Syntax	`apoc.label.exists(node, label)`
Description	Returns true or false depending on whether or not the given label exists.
Arguments	Name	Type	Description
	`node`	`ANY`	A node to check for the given label on.
	`label`	`STRING`	The given label to check for existence.
Returns	`BOOLEAN`

Label Expressions in Cypher

The existence of a label, as well as more complicated expressions, can be determined using Cypher’s label expressions.

Cypher syntax for checking the existence of a label

MATCH (n)
RETURN n:Label

To check for label existence dynamically, the IN keyword can be used alongside the labels() function:

Cypher syntax for checking the existence of a label dynamically

MATCH (n)
RETURN $labelAsAParam IN labels(n)

The examples in this section are based on the following graph:

CREATE (s1:Student {name: 'Priya'});

The following examples return whether or not the node has the 'Student' label using both APOC and Cypher:

apoc.label.exists

MATCH (s1 {name: 'Priya'})
RETURN apoc.label.exists(s1, "Student") AS output;

Using Cypher’s label expressions

MATCH (s1 {name: 'Priya'})
RETURN s1:Student AS output

Results
output
true

apoc.label.exists

MATCH (s1:Student {name: 'Priya'})
RETURN apoc.label.exists(s1, "Teacher") AS output;

Using Cypher’s label expressions

MATCH (s1 {name: 'Priya'})
RETURN s1:Teacher AS output

Results
output
false