Thanks a lot for adding this feature. I will try this and let you know how it goes.
On Tue, Aug 7, 2012 at 12:12 PM, K. John Wu <[email protected]> wrote: > Hi, Kishore, > > The file examples/ibis.cpp has been updated to allow you to specify a > name-option pair following -b, such as > > ibis -d tmp -b "a*:<binning none/>" -b "b*:<binning nbins=12000/>" -b > "<binning prec=2/>" -b 3 > > The four -b options are used as follows > > - any column whose name match the pattern "a*" (i.e., starting with > the letter 'a') will be indexed with indexing option <binning none/>. > > - among the remaining columns, any column whose name match the pattern > "b*" will be indexed with <binning nbins=12000/>. > > - all remaining columns will be index with the option <binning > prec=2/> (unless the option couldn't be applied, for example, because > the data is string valued). > > - the option "-b 3" tells FastBit to build indexes with three threads > (which requires enough memory to hold three different indexes and the > corresponding raw data in memory.) > > The source code is in SVN as revision 534. Please give it a try when > you get the chance and let us know if you encounter any problems. > > John > > > > > On 8/6/12 5:41 PM, K. John Wu wrote: > > Hi, Kishore, > > > > Thanks for the your interest in FastBit. Right now, the fastest way > > to change the indexing option is to edit the metadata file -part.txt. > > > > We will consider adding options to ibis.cpp to allow one to index each > > column separately. Let us know if you want to suggest something for > > this option. > > > > John > > > > > > On 8/6/12 5:12 PM, kishore g wrote: > >> Hi, > >> > >> Is it possible to use specify the type of index ( binning, range, > >> equality) on a per column basis. I tried the -b option but it > >> generates the index for all columns. I have a requirement where I will > >> be doing range query on one column and equality on others. The range > >> query column will be sorted as well. > >> > >> I could not find this in the documentation even though it says if an > >> index already exists it does not regenerate it unless -z option is > >> provided, it seems to regenerate it every time for all columns. > >> > >> Thanks for the help. > >> > >> Thanks, > >> Kishore G > >> > >> > >> _______________________________________________ > >> FastBit-users mailing list > >> [email protected] > >> https://hpcrdm.lbl.gov/cgi-bin/mailman/listinfo/fastbit-users > >> > _______________________________________________ > FastBit-users mailing list > [email protected] > https://hpcrdm.lbl.gov/cgi-bin/mailman/listinfo/fastbit-users >
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