[CASSANDRA-2710] Get multiple column ranges

• Type: Sub-task
• Status: Resolved
• Priority: Normal
• Resolution: Won't Fix
• Component/s: Legacy/CQL
• Labels: compositeColumns cql
• Assignee: Vijay
• Reporter: David Boxenhorn

Authors

Vijay

Reviewers

Jonathan Ellis

• Created: 26/May/11 10:18
• Updated: 16/Apr/19 09:32
• Resolved: 16/Aug/12 21:30

Description

I have replaced all my super column families with regular column families using composite columns. I have easily been able to support all previous functionality (I don't need range delete) except for one thing: getting multiple super columns with a single access. For this, I would need to get multiple ranges. (I can get multiple columns, or a single range, but not multiple ranges.)

For example, I used to have

[<superColumnName1>,<subColumnName1..N>],[<superColumnName2>,<subColumnName1..N>]

and I could get superColumnName1, superColumnName2

Now I have

[<len><superColumnName1>0<len><subColumnName1>..<len><superColumnName1>0<len><subColumnNameN>],[<len><superColumnName2>0<len><subColumnName1>..<len><superColumnName2>0<len><subColumnNameN>]

and I need to get superColumnName1..superColumnName1+, superColumnName2..superColumnName2+

to get the same functionality

I would like the clients to support this functionality, e.g. Hector to have .setRages parallel to .setColumnNames

and for CQL to support a syntax like

SELECT [FIRST N] [REVERSED] name1..nameN1, name2..nameN2... FROM ...