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From "Eric Evans (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-1704) CQL reads (aka SELECT)
Date Mon, 08 Nov 2010 17:31:07 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-1704?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12929636#action_12929636
] 

Eric Evans commented on CASSANDRA-1704:
---------------------------------------

I'm not sure it was obvious from my last comment, but the attached patch to the CQL doc (and
the HTML copy) were meant to be a summation of the syntax/semantics discussed. If no one responds
then I'll assume we have consensus and start working to make the implementation match (not
responding is fine, as long as that __is__ what it means :)).  

> CQL reads (aka SELECT)
> ----------------------
>
>                 Key: CASSANDRA-1704
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1704
>             Project: Cassandra
>          Issue Type: Sub-task
>          Components: API
>    Affects Versions: 0.8
>            Reporter: Eric Evans
>            Priority: Minor
>             Fix For: 0.8
>
>         Attachments: CQL.html, v1-0001-CASSANDRA-1704.-doc-update-for-proposed-SELECT.txt
>
>   Original Estimate: 0h
>  Remaining Estimate: 0h
>
> Data access specification and implementation for CQL.  
> This corresponds to the following RPC methods:
> * get()
> * get_slice()
> * get_count()
> * multiget_slice()
> * multiget_count()
> * get_range_slices()
> * get_indexed_slices()
> The initial check-in to trunk/ uses a syntax that looks like:
> {code:SQL}
> SELECT (FROM)? <CF> [USING CONSISTENCY.<LVL>] WHERE <EXPRESSION> [ROWLIMIT
X] [COLLIMIT Y] [ASC|DESC]
> {code}
> Where:
> * <CF> is the column family name.
> * <EXPRESSION> consists of relations chained by the AND keyword.
> * <LVL> corresponds to one of the enum values in the RPC interface(s).
> What is still undone:
> * Support for indexes
> * Counts
> * Complete test coverage
> And of course, all of this is still very much open to further discussion.

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