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Posted to commits@cassandra.apache.org by "Constance Eustace (JIRA)" <ji...@apache.org> on 2013/06/04 20:13:22 UTC
[jira] [Commented] (CASSANDRA-3783) Add 'null' support to CQL 3.0
[ https://issues.apache.org/jira/browse/CASSANDRA-3783?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13674638#comment-13674638 ]
Constance Eustace commented on CASSANDRA-3783:
----------------------------------------------
I am using cass-jdbc 1.2.5 and have done several UPDATE and INSERT statements using NULL or null for literal (non-prepared) statements which do not parse, while using Types.NULL in a prepared statement or a null string + Types.VARCHAR in a prepared statement result in the insert/update of an empty string as visible by cqlsh...
This is marked as fixed as of 1.2.4...
Is there a new Keyword for INSERT/UPDATE of NULL?
> Add 'null' support to CQL 3.0
> -----------------------------
>
> Key: CASSANDRA-3783
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3783
> Project: Cassandra
> Issue Type: Sub-task
> Components: API
> Reporter: Sylvain Lebresne
> Assignee: MichaĆ Michalski
> Priority: Minor
> Labels: cql3
> Fix For: 1.2.4
>
> Attachments: 3783-v2.patch, 3783-v3.patch, 3783-v4.txt, 3783-v5.txt, 3783-wip-v1.patch
>
>
> Dense composite supports adding records where only a prefix of all the component specifying the key is defined. In other words, with:
> {noformat}
> CREATE TABLE connections (
> userid int,
> ip text,
> port int,
> protocol text,
> time timestamp,
> PRIMARY KEY (userid, ip, port, protocol)
> ) WITH COMPACT STORAGE
> {noformat}
> you can insert
> {noformat}
> INSERT INTO connections (userid, ip, port, time) VALUES (2, '192.168.0.1', 80, 123456789);
> {noformat}
> You cannot however select that column specifically (i.e, without selecting column (2, '192.168.0.1', 80, 'http') for instance).
> This ticket proposes to allow that though 'null', i.e. to allow
> {noformat}
> SELECT * FROM connections WHERE userid = 2 AND ip = '192.168.0.1' AND port = 80 AND protocol = null;
> {noformat}
> It would then also make sense to support:
> {noformat}
> INSERT INTO connections (userid, ip, port, protocol, time) VALUES (2, '192.168.0.1', 80, null, 123456789);
> {noformat}
> as an equivalent to the insert query above.
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