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https://issues.apache.org/jira/browse/CASSANDRA-3680?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13427605#comment-13427605
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Yuki Morishita commented on CASSANDRA-3680:
-------------------------------------------
I ran couple of test with above _blogs_ CF(index is created on _author_).
First, insert 3 rows below:
{code}
cqlsh:3680> INSERT INTO blogs (blog_id, posted_at, author, content) VALUES (1,
'2012-11-11', 'foo', 'bar');
cqlsh:3680> INSERT INTO blogs (blog_id, posted_at, author, content) VALUES (2,
'2012-11-12', 'foo', 'baz');
cqlsh:3680> INSERT INTO blogs (blog_id, posted_at, author, content) VALUES (3,
'2012-11-11', 'gux', 'quux');
cqlsh:3680> SELECT * FROM blogs;
blog_id | posted_at | author | content
---------+--------------------------+--------+---------
1 | 2012-11-11 00:00:00-0600 | foo | bar
2 | 2012-11-12 00:00:00-0600 | foo | baz
3 | 2012-11-11 00:00:00-0600 | gux | quux
{code}
Select on indexed column works fine:
{code}
cqlsh:3680> SELECT * FROM blogs WHERE author='foo';
blog_id | posted_at | author | content
---------+--------------------------+--------+---------
1 | 2012-11-11 00:00:00-0600 | foo | bar
2 | 2012-11-12 00:00:00-0600 | foo | baz
{code}
But, query combined with primary key(2nd query below) is not working as
expected:
{code}
cqlsh:3680> SELECT * FROM blogs WHERE posted_at='2012-11-11';
blog_id | posted_at | author | content
---------+--------------------------+--------+---------
1 | 2012-11-11 00:00:00-0600 | foo | bar
3 | 2012-11-11 00:00:00-0600 | gux | quux
cqlsh:3680> SELECT * FROM blogs WHERE posted_at='2012-11-11' AND author='foo';
blog_id | posted_at | author | content
---------+--------------------------+--------+---------
1 | 2012-11-11 00:00:00-0600 | foo | bar
2 | 2012-11-12 00:00:00-0600 | foo | baz
{code}
Here, I expected only row with blog_id=1, but both 1 and 2 are returned.
> Add Support for Composite Secondary Indexes
> -------------------------------------------
>
> Key: CASSANDRA-3680
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3680
> Project: Cassandra
> Issue Type: Sub-task
> Reporter: T Jake Luciani
> Assignee: Sylvain Lebresne
> Labels: cql3, secondary_index
> Fix For: 1.2
>
> Attachments: 0001-Secondary-indexes-on-composite-columns.txt
>
>
> CASSANDRA-2474 and CASSANDRA-3647 add the ability to transpose wide rows
> differently, for efficiency and functionality secondary index api needs to be
> altered to allow composite indexes.
> I think this will require the IndexManager api to have a
> maybeIndex(ByteBuffer column) method that SS can call and implement a
> PerRowSecondaryIndex per column, break the composite into parts and index
> specific bits, also including the base rowkey.
> Then a search against a TRANSPOSED row or DOCUMENT will be possible.
>
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