[jira] [Commented] (CASSANDRA-2474) CQL support for compound columns

["Jonathan Ellis (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-2474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13095618#comment-13095618 ] 

Jonathan Ellis commented on CASSANDRA-2474:
-------------------------------------------

Illustration time.  (See: screenshot-1.jpg)

We have a "wide row" of stock histories.  Just "normal" columns, no composites or supercolumns.

We could use transposition syntax to get these as "normal" (not sparse) resultset:

{code}
SELECT date, value
FROM stockhist
WHERE symbol='GOOG'
  AND date >= '2011-01-02'
LIMIT 50
{code}

Which would yield
{noformat}
date        value
2011-01-02  $75.23
2011-01-03  $82.11
{noformat}

> 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
>
>
> 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.

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