I figured out the problem. The DELETE query only works if the column used in the WHERE clause is also the first column used to define the PRIMARY KEY.




From: wang liang [mailto:wlahhn@gmail.com]
Sent: Monday, October 22, 2012 1:31 AM
To: user@cassandra.apache.org
Subject: Re: DELETE query failing in CQL 3.0


It is better to provide table definition. I guess the reason is below statement. 

" a table must define at least one column that is not part of the PRIMARY KEY as a row exists in Cassandra only if it contains at least one value for one such column "

Please check this document here


On Mon, Oct 22, 2012 at 7:53 AM, aaron morton <aaron@thelastpickle.com> wrote:

Can you paste the table definition ? 





Aaron Morton

Freelance Developer



On 20/10/2012, at 5:53 AM, "Ryabin, Thomas" <Thomas.Ryabin@McKesson.com> wrote:

I have a column family called “books”, and am trying to delete all rows where the “title” column is equal to “hatchet”. This is the query I am using:

    DELETE FROM books WHERE title = ‘hatchet’;


This query is failing with this error:

    Bad Request: PRIMARY KEY part title found in SET part


I am using Cassandra 1.1 and CQL 3.0. What could be the problem?





Best wishes,
Helping others is to help myself.