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From David Boxenhorn <da...@taotown.com>
Subject Re: Using composite column names in the CLI
Date Tue, 17 May 2011 08:52:13 GMT
Excellent!

(I presume there is some way of representing ":", like "\:"?)


On Tue, May 17, 2011 at 11:44 AM, Sylvain Lebresne <sylvain@datastax.com>wrote:

> Provided you're working on a branch that has CASSANDRA-2231 applied (that's
> either the cassandra-0.8.1 branch or trunk), this work 'out of the box':
>
> The setup will look like:
> [default@unknown] create keyspace test;
> [default@unknown] use test;
> [default@test] create column family testCF with
> comparator='CompositeType(AsciiType, IntegerType(reversed=true),
> IntegerType)' and default_validation_class=AsciiType;
>
> Then:
> [default@test] set testCF[a]['foo:24:24'] = 'v1';
> Value inserted.
> [default@test] set testCF[a]['foo:42:24'] = 'v2';
> Value inserted.
> [default@test] set testCF[a]['foobar:42:24'] = 'v3';
> Value inserted.
> [default@test] set testCF[a]['boobar:42:24'] = 'v4';
> Value inserted.
> [default@test] set testCF[a]['boobar:42:42'] = 'v5';
> Value inserted.
> [default@test] get testCF[a];
> => (column=boobar:42:24, value=v4, timestamp=1305621115813000)
> => (column=boobar:42:42, value=v5, timestamp=1305621125563000)
> => (column=foo:42:24, value=v2, timestamp=1305621096473000)
> => (column=foo:24:24, value=v1, timestamp=1305621085548000)
> => (column=foobar:42:24, value=v3, timestamp=1305621110813000)
> Returned 5 results.
>
> --
> Sylvain
>
> On Tue, May 17, 2011 at 9:20 AM, David Boxenhorn <david@taotown.com>
> wrote:
> > This is what I'm talking about
> >
> > https://issues.apache.org/jira/browse/CASSANDRA-2231
> >
> > The on-disk format is
> >
> > <(short)length><constituent><end byte =
> 0><(short)length><constituent><end
> > byte = 0>...
> >
> > I would like to be able to input these kinds of keys into the CLI,
> something
> > like
> >
> > set cf[key]['constituent1':'constituent2':'constituent3'] = val
> >
> >
> > On Tue, May 17, 2011 at 2:15 AM, Sameer Farooqui <
> cassandralabs@gmail.com>
> > wrote:
> >>
> >> Cassandra wouldn't know that the column name is composite of two
> different
> >> things. So you could just request the column names and values for a
> specific
> >> key like this and then just look at the column names that get returned:
> >> [default@MyKeyspace] get DemoCF[ascii('key_42')];
> >> => (column=CA_SanJose, value=50, timestamp=1305236885112000)
> >> => (column=CA_PaloAlto, value=49, timestamp=1305236885192000)
> >> => (column=FL_Orlando, value=45, timestamp=1305236885280000)
> >> => (column=NY_NYC, value=40, timestamp=1305236885361000)
> >>
> >> And I'm not sure what you mean by inputting composite column names. You
> >> just input them like any other column name:
> >> [default@MyKeyspace] set DemoCF['key_42']['CA_SanJose']='51';
> >> Value inserted.
> >>
> >>
> >>
> >>
> >> On Mon, May 16, 2011 at 2:34 PM, Aaron Morton <aaron@thelastpickle.com>
> >> wrote:
> >>>
> >>> What do you mean by composite column names?
> >>>
> >>> Do the data type functions supported by get and set help? Or the assume
> >>> statement?
> >>>
> >>> Aaron
> >>> On 17/05/2011, at 3:21 AM, David Boxenhorn <david@taotown.com> wrote:
> >>>
> >>> > Is there a way to view composite column names in the CLI?
> >>> >
> >>> > Is there a way to input them (i.e. in the set command)?
> >>> >
> >>
> >
> >
>

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