apoc.meta.nodes.count

Details
Syntax	`apoc.meta.nodes.count([ nodes config ])`
Description	Returns the sum of the `NODE` values with the given labels in the `LIST<STRING>`.
Arguments	Name	Type	Description
	`nodes`	`LIST<STRING>`	A list of node labels. The default is: `[]`.
	`config`	`MAP`	A relationship, node or map to get the property types from. { includeRels = [] :: LIST<STRING> } The default is: `{}`.
Returns	`INTEGER`

Config parameters

This procedure supports the following config parameters:

Config parameters
Name	Type	Default	Description
includeRels	LIST<STRING>	[]	Relationship types to include. Default is to include all relationship types. Add the suffix `>` or `<` to the relationship type name to indicate an outgoing or incoming relationship.

Deprecated parameters
Name	Type	Default	Description
rels	LIST<STRING>	[]	deprecated, use `includeRels`

Usage Examples

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

CREATE (n:MyCountLabel {id: 1}), (:MyCountLabel {id: 2}), (m:ThirdLabel {id: 3})
WITH n,m
CREATE (n)-[:MY_COUNT_REL]->(m), (n)-[:ANOTHER_MY_COUNT_REL]->(m), (n)<-[:ANOTHER_MY_COUNT_REL]-(m)

We can return all nodes with a label MyCountLabel or a label ThirdLabel

RETURN apoc.meta.nodes.count(['MyCountLabel', 'ThirdLabel']) AS count;

Results
count
3

The following example returns all nodes with a label MyCountLabel and a relationship MY_COUNT_REL through the config parameter includeRels:

RETURN apoc.meta.nodes.count(['MyCountLabel'], {includeRels: ['MY_COUNT_REL']}) AS count;

Results
count
1

The following example returns all nodes with an outgoing relationship MY_COUNT_REL (with the suffix >):

RETURN apoc.meta.nodes.count(['MyCountLabel'], {includeRels: ['MY_COUNT_REL>']}) AS count;

Results
count
1

The following example returns all nodes with an incoming relationship MY_COUNT_REL (with the suffix <):

RETURN apoc.meta.nodes.count(['MyCountLabel'], {includeRels: ['MY_COUNT_REL<']}) AS count;

Results
count
0