Hi John, thanks for your help, I really appreciate it. and thanks for the warning, I'll consider the space-time trade-off of interval encoded index. Regards, Delu
From: K. John Wu <[email protected]> To: FastBit Users <[email protected]> Cc: Delu Zhu <[email protected]> Sent: Monday, May 6, 2013 10:02 PM Subject: Re: [FastBit-users] Fw: how to build index on specified column Yes, you can use ibis to do this. To index column 'ab' with '<binning none/><encoding equality/>' and column 'cd' with '<binning nbins=100/><encoding interval/>', use the following options -b 'ab:<binning none/><encoding equality/>' -b 'cd:<binning nbins=100/><encoding interval/>' (note that the above options are to be on one command line!) There is a bit more information about this at <lbl.gov/~kwu/fastbit/doc/ibisCommandLine.html#options> A word of caution: an interval encoded index can be very large! John On 5/6/13 5:07 AM, Delu Zhu wrote: > Dear author, > > I have a question about FastBit : ) > Suppose that a data partition is prepared. I want to build an > equality-encoded index on one column and build a interval-encoded > index on another column. Can I use command line tool ibis to achieve > this and how? > > Thanks, > Delu > > > > > _______________________________________________ > 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
