Node & relationship functions

The following functions are used to get information about nodes and relationships.

Function	Description	Alias
`ID`	returns the internal ID of node/rel
`LABEL`	returns the label name of node/relationship	`LABELS`
`OFFSET`	returns the offset of the internal ID
`PROPERTIES`	returns a struct of all user-defined properties of node/rel

See below for more details on each of these functions.

ID

Returns the internal ID of node/rel.

Input type	Output type
`NODE`	`ID` (Internal database ID)
`REL`	`ID` (Internal database ID)

MATCH (a:User) RETURN ID(a) AS ID LIMIT 1;

┌─────────────┐
│ ID          │
│ INTERNAL_ID │
├─────────────┤
│ 0:0         │
└─────────────┘

LABEL

Returns the label name of node/rel. The alias LABELS can also be used.

Input type	Output type
`NODE`	`STRING`
`REL`	`STRING`

MATCH (a) RETURN LABEL(a) AS LABEL LIMIT 1;

┌────────┐
│ LABEL  │
│ STRING │
├────────┤
│ User   │
└────────┘

OFFSET

Returns the offset of the internal ID.

Input type	Output type
`ID`	`INT64`

MATCH (a) RETURN OFFSET(ID(a)) AS OFFSET LIMIT 1;

┌────────┐
│ OFFSET │
│ INT64  │
├────────┤
│ 0      │
└────────┘

PROPERTIES

Returns a STRUCT containing all user-defined properties of a node or relationship, omitting internal metadata columns (_ID, _LABEL, _SRC, _DST).

Input type	Output type
`NODE`	`STRUCT`
`REL`	`STRUCT`

MATCH (a:User {name: 'Alice'}) RETURN PROPERTIES(a) AS props;

┌───────────────────────────────────────────┐
│ props                                     │
│ STRUCT(name STRING, age INT64)            │
├───────────────────────────────────────────┤
│ {name: Alice, age: 30}                    │
└───────────────────────────────────────────┘