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From "Jack Krupansky (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (CASSANDRA-6477) Materialized Views (was: Global Indexes)
Date Wed, 08 Jul 2015 15:22:14 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-6477?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14618763#comment-14618763
] 

Jack Krupansky edited comment on CASSANDRA-6477 at 7/8/15 3:22 PM:
-------------------------------------------------------------------

I don't see updated CQL.textile for CREATE MV on the branch. Coming soon?

Also, the comment for CREATE MV in CQL.g does not quite match the actual syntax:

1. Missing the IF NOT EXISTS clause.
2. Has parentheses around the <columns> list, but SELECT does not have that.
3. Unclear whether AS or functions are supported in the column name list, but selectStatement
would certainly allow that.
4. Has FROM (<columnName>), which should be FROM <CF>, I think.



was (Author: jkrupan):
I don't see updated CQL.textile for CREATE MV on the branch. Coming soon?

Also, the comment for CREATE MV in CQL.g does not quite match the actual syntax:

1. Missing the IF NOT EXISTS clause.
2. Has parentheses around the <columns> list, but SELECT does not have that.
3. Unclear whether AS on functions are supported in the column name list, but selectStatement
would certainly allow that.
4. Has FROM (<columnName>), which should be FROM <CF>, I think.


> Materialized Views (was: Global Indexes)
> ----------------------------------------
>
>                 Key: CASSANDRA-6477
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6477
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: API, Core
>            Reporter: Jonathan Ellis
>            Assignee: Carl Yeksigian
>              Labels: cql
>             Fix For: 3.0 beta 1
>
>         Attachments: test-view-data.sh
>
>
> Local indexes are suitable for low-cardinality data, where spreading the index across
the cluster is a Good Thing.  However, for high-cardinality data, local indexes require querying
most nodes in the cluster even if only a handful of rows is returned.



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