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https://issues.apache.org/jira/browse/CASSANDRA-2474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13098100#comment-13098100
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Jonathan Ellis commented on CASSANDRA-2474:
-------------------------------------------

Reaching back into the past to reply to Rick: 

bq. The keyword "AS" may be a bit confusing to SQL users. It is a optional 
keyword that signifies that that the following word is to be taken has an alias 
for the first word.

That's exactly how it's being used in [my proposals for] CQL: giving an alias 
to a column ("componentX") that isn't very meaningful in a resultset.


> 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.

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