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Message from discussion Delete operation in SDN using cypher
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Michael Hunger  
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 More options Sep 27 2012, 10:18 am
From: Michael Hunger <michael.hun...@neotechnology.com>
Date: Thu, 27 Sep 2012 07:18:14 -0700
Local: Thurs, Sep 27 2012 10:18 am
Subject: Re: [Neo4j] Delete operation in SDN using cypher
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Something like:

> START a=node(1)
> MATCH (a)-[rels*0..]-(z)
> FOREACH(rel IN rels: DELETE rel)
> DELETE a

       WITH z
       where z-->()

> DELETE z

Michael

Am 26.09.2012 um 06:43 schrieb Abdul Azeez Shaik:

> Hi Nigel,

> Thanks for the reply. I tried executing in latest 1.8RC1 webconsole, it gives me following error,
> TransactionFailureException: Unable to commit transaction

> Also, Do we need to use FOREACH in this case? Can't we directly use DELETE a,rels,z?
> In my case a and z are also collections, not single node.

> Thanks,
>  Abdul

> On Wed, Sep 26, 2012 at 4:49 PM, Nigel Small <ni...@nigelsmall.net> wrote:
> Hi Abdul

> I have recently added cascading deletion to py2neo. I use the following Cypher query...

> START a=node(1)
> MATCH (a)-[rels*0..]-(z)
> FOREACH(rel IN rels: DELETE rel)
> DELETE a, z

> ...where the first line determines the start node by ID. I have also considered looking at limits on relationship type and direction as well as a maximum cascade limit so you may want to consider that too.

> Cheers
> Nige

> On 26 September 2012 11:33, Abdul Azeez Shaik <azeeztechni...@gmail.com> wrote:
> Dear all,

> Can i delete a node along with its relationships and children using the following CYPHER query,
> "START g = node:galleryid(galleryid="0511a491-62ea-41f6-9a6f-b9060e3c525a") MATCH g-[r]-p DELETE g, r, p"

> Its not working when i tried this in webconsole of neo4j.
> I am trying to find where i can delete a node with all its children at one go.
> Or do i need to delete each children and its relationships, and then finally parent node.

> Kindly let me know your suggestions.

> Thanks,
> Abdul

> --

> --

> --


 
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