linkDeleting Nodes

A QueryRunner instance can be used for deleting nodes from Objects. A label and a where parameter can be used.

1link/* --> let 'queryRunner' be a QueryRunner instance and 'session' and already-created session */

2linkconst result = await queryRunner.delete({

3link    /* --> (optional) label(s) of the nodes to be matched. Multiple labels like 'User:Person' can also be used */

4link    label: 'User',

5link    /* --> (optional) the where clause for the nodes to be matched. A param object or a Where instance can be used */

6link    where: { // @see [Where](../Where-Parameters)

7link        /* --> the identifier needs to be used as a key */

8link        u: {

9link            id: {

10link                /* --> using the "in" Symbol from "Op" */

11link                $[Op.in]: ['1', '2']

12link            }

13link        }

14link    },

15link    /* --> (optional) the identifier of the nodes for the query. Is needed for parsing the results. Default is the value of 'QueryRunner.identifiers.default' */

16link    identifier: 'u',

17link    /* --> (optional) adds the DETACH keyword to the delete statement, also deleting the relationships of the node(s) */

18link    detach: true,

19link    /* --> (optional) an existing session or transaction to use */

20link    session: null,

21link});

22link

23link/* --> the result is the QueryResult from the neo4j driver */

24linkconsole.log(result.summary.counters.updates().nodesDeleted);