Bill, I am a new user of Cassandra, so I've been following this discussion with interest. I think the answer is "no", except for the brute force method of looping through all your data. It's like asking for a list of all the files on your C: drive. The term "column" is very misleading, since "columns" are really leaves of a tree structure, not columns of a tabular structure.
Anybody want to tell me I'm wrong? BTW, Bill, I think we've corresponded before, here: http://www.dehora.net/journal/2004/04/whats_in_a_name.html On Fri, May 14, 2010 at 2:23 AM, Bill de hOra <b...@dehora.net> wrote: > A SlicePredicate/SliceRange can't exclude column values afaik. > > Bill > > > Jonathan Shook wrote: > >> get_slice >> >> see: http://wiki.apache.org/cassandra/API under get_slice and >> SlicePredicate >> >> On Thu, May 13, 2010 at 9:45 AM, Bill de hOra <b...@dehora.net> wrote: >> >>> get_count returns the number of columns, not the names of those columns? >>> I >>> should have been specific, by "list the columns", I meant "list the >>> column >>> names". >>> >>> Bill >>> >>> Gary Dusbabek wrote: >>> >>>> We have get_count at the thrift level. You supply a predicate and it >>>> returns the number of columns that match. There is also >>>> multi_get_count, which is the same operation against multiple keys. >>>> >>>> Gary. >>>> >>>> >>>> On Thu, May 13, 2010 at 04:18, Bill de hOra <b...@dehora.net> wrote: >>>> >>>>> Admin question - is there a way to list the columns for a particular >>>>> key? >>>>> >>>>> Bill >>>>> >>>>> >>> >
