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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: "range query" vs "slice range query"
Date Wed, 25 May 2011 12:54:34 GMT
get_range_slices is the api to get a slice (of columns) from each of a
range (of rows)

On Wed, May 25, 2011 at 3:42 AM, david lee <iecanfly@gmail.com> wrote:
> hi guys,
> i'm reading up on the book "Cassandra - Definitive guide"
> and i don't seem to understand what it says about "ranges and slices"
> my understanding is
> a range as in "a mathematical range to define a subset from an ordered set
> of elements",
> in cassandra typically means a range of rows whereas
> a slice means a range of columns.
> a range query refers to a query to retrieve a range of rows whereas
> a slice range queyr refers to a query to retrieve range of columns within a
> row.
> i may be talking about total nonsense but i really am more confused after
> reading this portion of the book
> http://books.google.com/books?id=MKGSbCbEdg0C&pg=PA134&lpg=PA134&dq=cassandra+%22range+query%22+%22range+slice%22&source=bl&ots=XoPB4uA60u&sig=uDDoQe0FRkQobHnr-vPvvQ3B8TQ&hl=en&ei=ub3cTcvGLZLevQOuxs3CDw&sa=X&oi=book_result&ct=result&resnum=4&ved=0CCwQ6AEwAw#v=onepage&q=cassandra%20%22range%20query%22%20%22range%20slice%22&f=false
> many thanx in advance
> david
>



-- 
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com

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