[
https://issues.apache.org/jira/browse/CASSANDRA-2474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13095666#comment-13095666
]
Pavel Yaskevich commented on CASSANDRA-2474:
--------------------------------------------
bq. we probably don't want the colons in the default aliases
I think we better have them so users won't get confused
bq. it would be good to make composite columns less of a special case. Instead
of "column" for a normal column and "parent/column" for supercolumns and
"component1..componentN" for composite, use component1 for normal, component1/2
for super, component1/N for composite.
Maybe it is better if we will support (..,..,..) notation for composite
columns, replace :column with :name and leave :parent for supercolumns? It will
allow us to drop special casing. As I mentioned in my previous comment:
{noformat}
SELECT :name as (date, company), :value as price FROM stockhist WHERE
<key_alias>='GOOG' AND date >= '2011-01-02' LIMIT 50
and
SELECT :parent as company, :name as (date, <attr>), :value as price FROM
stockhist WHERE company='GOOG' AND date >= '2011-01-02' AND <key_alias> = '...'
LIMIT 50
{noformat}
I'm not very familiar with composite columns by from what I can see we are
forced to work with what we have in the statement without re-creation because
even in your example when we will try to add a new <location> field it will be
very hard to guess how column name was looking previously...
> CQL support for compound columns
> --------------------------------
>
> Key: CASSANDRA-2474
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2474
> Project: Cassandra
> Issue Type: Sub-task
> Components: API, Core
> Reporter: Eric Evans
> Assignee: Pavel Yaskevich
> Labels: cql
> Fix For: 1.0
>
> Attachments: screenshot-1.jpg, screenshot-2.jpg
>
>
> For the most part, this boils down to supporting the specification of
> compound column names (the CQL syntax is colon-delimted terms), and then
> teaching the decoders (drivers) to create structures from the results.
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira
