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Posted to commits@cassandra.apache.org by "Jim Ancona (JIRA)" <ji...@apache.org> on 2010/10/01 20:56:34 UTC
[jira] Commented: (CASSANDRA-1088) Enable cassandra-cli to list
rows, and page through rows in a column family
[ https://issues.apache.org/jira/browse/CASSANDRA-1088?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12917003#action_12917003 ]
Jim Ancona commented on CASSANDRA-1088:
---------------------------------------
I updated Frank's patch so that it applies to the current trunk. I have some thoughts about simplifying the syntax a bit, but I thought I'd submit what I have and get some feedback.
> Enable cassandra-cli to list rows, and page through rows in a column family
> ---------------------------------------------------------------------------
>
> Key: CASSANDRA-1088
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1088
> Project: Cassandra
> Issue Type: New Feature
> Components: Tools
> Reporter: Frank Du
> Fix For: 0.7.1
>
> Attachments: cassandra-cli-list.patch, patch.txt, path-2010-0602.txt
>
>
> I have been looking for showing rows and paging through rows. Finally I write this extension to cassandra-cli tool.
> Let's assume that we have the following data in column family named 'CF1':
> =========================
> Row 1:
> key: fdu1, name: 'Frank Du', city: 'NYC'
> Row 2:
> key: fdu2, name: 'Jonathan Ellis'
> Row 3:
> key: fdu3, name: 'Eric Evans'
> Syntax:
> =========================
> LIST keyRangeExpression limitClause?
> keyRangeExpression:
> columnFamilyName[ startKey : endKey ] ( [ 'superCoumnName' ] )?
> limitClause:
> LIMIT count (OFFSET offset)?
> \| LIMIT offset, count
> The limit clause is the same with MySql.
> Examples:
> =========================
> // list all the 3 rows in CF1
> list CF1[ '' : '' ]
> // list all rows, offset from index 1. So it will show 2 rows
> list CF1[ '' : '' ] limit 1, 10
> // show the rows 'fdu2' and 'fdu3'
> list CF1[ 'fdu2' : '' ] limit 10
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