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From "Eric Evans (JIRA)" <j...@apache.org>
Subject [jira] Created: (CASSANDRA-1704) CQL reads (aka SELECT)
Date Thu, 04 Nov 2010 14:07:43 GMT
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


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 text coverage

And of course, all of this is still very much open to further discussion.


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