Node Querying

Table 1. Functions
Qualified Name	Type
apoc.nodes.isDense `apoc.nodes.isDense(node)` - returns true if it is a dense node	`Function`
apoc.nodes.connected `apoc.nodes.connected(start, end, rel-direction-pattern)` - returns true when the node is connected to the other node, optimized for dense nodes	`Function`
apoc.node.relationship.exists `apoc.node.relationship.exists(node, rel-direction-pattern)` - returns true when the node has the relationships of the pattern	`Function`
apoc.node.relationships.exist `apoc.node.relationships.exist(node, rel-direction-pattern)` - returns a map with rel-pattern, boolean for the given relationship patterns	`Function`
apoc.nodes.relationships.exist `apoc.nodes.relationships.exist(node\|nodes\|id\|[ids], rel-direction-pattern)` - returns a list of maps where each one has two fields: `node` which is the node subject of the analysis and `exists` which is a map with rel-pattern, boolean for the given relationship patterns	`Function`
apoc.node.relationship.types `apoc.node.relationship.types(node NODE, relTypes STRING)` - returns a `LIST<STRING>` of distinct `RELATIONSHIP` types for the given `NODE`.	`Function`
apoc.nodes.relationship.types `apoc.nodes.relationship.types(nodes ANY, types STRING)` - returns a `LIST<STRING>` of distinct `RELATIONSHIP` types from the given `LIST<NODE>` values.	`Function`
apoc.node.degree `apoc.node.degree(node NODE, relTypes STRING)` - returns the total degrees of the given `NODE`.	`Function`
apoc.node.id `returns id for (virtual) nodes`	`Function`
apoc.node.degree.in `apoc.node.degree.in(node, relationshipName)` - returns total number number of incoming relationships	`Function`
apoc.node.degree.out `apoc.node.degree.out(node, relationshipName)` - returns total number number of outgoing relationships	`Function`
apoc.node.labels `returns labels for (virtual) nodes`	`Function`
apoc.any.properties `returns properties for virtual and real, nodes, rels and maps`	`Function`
apoc.any.property `returns property for virtual and real, nodes, rels and maps`	`Function`
apoc.label.exists `apoc.label.exists(element, label)` - returns true or false related to label existance	`Function`

Rel-direction-pattern Syntax:

[<]RELATIONSHIP_TYPE1[>]|[<]RELATIONSHIP_TYPE2[>]|…

Example: 'FRIEND|MENTORS>|<REPORTS_TO' will match to :FRIEND relationships in either direction, outgoing :MENTORS relationships, and incoming :REPORTS_TO relationships.

Table 2. Procedures
Qualified Name	Type
apoc.nodes.get `apoc.nodes.get(node\|nodes\|id\|[ids])` - quickly returns all nodes with these ids	`Procedure`