Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Save more on your purchases now! discount-offer-chevron-icon
Savings automatically calculated. No voucher code required.
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Neo4j Cookbook

You're reading from   Neo4j Cookbook Harness the power of Neo4j to perform complex data analysis over the course of 75 easy-to-follow recipes

Arrow left icon
Product type Paperback
Published in May 2015
Publisher
ISBN-13 9781783287253
Length 226 pages
Edition 1st Edition
Languages
Tools
Arrow right icon
Author (1):
Arrow left icon
Ankur Goel Ankur Goel
Author Profile Icon Ankur Goel
Ankur Goel
Arrow right icon
View More author details
Toc

Table of Contents (12) Chapters Close

Preface 1. Getting Started with Neo4j FREE CHAPTER 2. Connecting to Neo4j 3. The Cypher Query Language 4. Data Modeling and Leveraging with Neo4j 5. Mining the Social Treasure 6. Developing Location-based Services with Neo4j 7. Visualization of Graphs 8. Industry Usages of Neo4j 9. Neo4j Administration and Maintenance 10. Scaling Neo4j Index

Deleting data from Neo4j using the Cypher query

In this recipe, we will learn how to delete nodes and relationships from Neo4j. This recipe can be used to delete all nodes/relations or subsets of them.

Getting ready

To step through this recipe, you will need to create some nodes and relationships among them to get the most from this recipe.

How to do it...

We have divided this recipe into the following problem sets:

  • Deleting all relationships from the Neo4j graph:
    MATCH (n)-[r]-() DELETE r
  • Deleting all nodes from the Neo4j graph:
    MATCH (n) DELETE n

    The preceding query will only work if there are no relationships in the graph.

  • Deleting all nodes from the Neo4j graph matching a condition:
    MATCH (n) WHERE n.city = "Atlanta" DELETE n
    # You have to delete all relationships from that node before deleting that node
  • Deleting all relationships of a particular type:
    MATCH n-[r:ORIGIN]-() DELETE r
  • Deleting a property/properties from a particular node/nodes:
    MATCH (n) REMOVE n.city
    # To specify a particular...
lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at $19.99/month. Cancel anytime