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From "Sylvain Lebresne (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-10532) Allow LWT operation on static column with only partition keys
Date Mon, 19 Oct 2015 07:37:05 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-10532?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14962967#comment-14962967
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Sylvain Lebresne commented on CASSANDRA-10532:
----------------------------------------------

bq. What dev should we assign for LWT stuff?

Not sure, but you can feel free to assign me for triaging. In this instance, unless I'm missing
something, we shouldn't need any change to the underlying LWT implementation, this is really
more of a CQL issue.

> Allow LWT operation on static column with only partition keys
> -------------------------------------------------------------
>
>                 Key: CASSANDRA-10532
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10532
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: API
>         Environment: C* 2.2.0
>            Reporter: DOAN DuyHai
>            Assignee: Carl Yeksigian
>             Fix For: 2.2.x
>
>
> Schema
> {code:sql}
> CREATE TABLE IF NOT EXISTS achilles_embedded.entity_with_static_column(
> id bigint,
> uuid uuid,
> static_col text static,
> value text,
> PRIMARY KEY(id, uuid));
> {code}
> When trying to prepare the following query
> {code:sql}
> DELETE static_col FROM achilles_embedded.entity_with_static_column WHERE id=:id_Eq IF
static_col=:static_col;
> {code}
> I got the error *DELETE statements must restrict all PRIMARY KEY columns with equality
relations in order to use IF conditions, but column 'uuid' is not restricted*
> Since the mutation only impacts the static column and the CAS check is on the static
column, it makes sense to provide only partition key



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