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From Tyler Hobbs <ty...@datastax.com>
Subject Re: DELETE query failing in CQL 3.0
Date Mon, 22 Oct 2012 22:15:47 GMT
For what it's worth, Cassandra 1.2 will support deleting a slice of
columns, allowing you to specify the first N components of the primary key
in a WHERE clause for a DELETE statement:
https://issues.apache.org/jira/browse/CASSANDRA-3708

On Mon, Oct 22, 2012 at 8:45 AM, Ryabin, Thomas
<Thomas.Ryabin@mckesson.com>wrote:

>  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.****
>
> ** **
>
> -Thomas****
>
> ** **
>
> *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<http://cassandra.apache.org/doc/cql3/CQL.html#createKeyspaceStmt>
> . ****
>
> ** **
>
> On Mon, Oct 22, 2012 at 7:53 AM, aaron morton <aaron@thelastpickle.com>
> wrote:****
>
> Can you paste the table definition ? ****
>
> ** **
>
> Thanks****
>
> ** **
>
> -----------------****
>
> Aaron Morton****
>
> Freelance Developer****
>
> @aaronmorton****
>
> http://www.thelastpickle.com****
>
> ** **
>
> 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?****
>
>  ****
>
> -Thomas****
>
> ** **
>
>
>
> ****
>
> ** **
>
> --
> Best wishes,
> Helping others is to help myself.****
>



-- 
Tyler Hobbs
DataStax <http://datastax.com/>

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