<div dir="ltr">I just used the terminology that was used in issue <a href="https://r-forge.r-project.org/tracker/index.php?func=detail&aid=1007&group_id=240&atid=978">https://r-forge.r-project.org/tracker/index.php?func=detail&aid=1007&group_id=240&atid=978</a> by Matt.<div>
<br></div><div>Essentially, it would mean that whole table is also pre-sorted by some other column than it's primary key and that sort order is also saved. Perhaps, Matt would shed some light on it?</div></div><div class="gmail_extra">
<br><br><div class="gmail_quote">On Wed, Oct 9, 2013 at 11:56 AM, Eduard Antonyan <span dir="ltr"><<a href="mailto:eduard.antonyan@gmail.com" target="_blank">eduard.antonyan@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<p dir="ltr">I understand the problem you want solved (fast search by e.g. second key element), but I don't understand what secondary keys would mean/be...?</p><div class="HOEnZb"><div class="h5">
<div class="gmail_quote">On Oct 8, 2013 10:48 PM, "Chinmay Patil" <<a href="mailto:chinmay.patil@gmail.com" target="_blank">chinmay.patil@gmail.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">Eduard, <div><br></div><div>Details of the issue raised are in this question.</div><div><br></div><div><a href="http://stackoverflow.com/questions/15769837/" target="_blank">http://stackoverflow.com/questions/15769837/</a><br>
</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Oct 8, 2013 at 10:47 PM, Eduard Antonyan <span dir="ltr"><<a href="mailto:eduard.antonyan@gmail.com" target="_blank">eduard.antonyan@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">I don't think I understand what secondary keys are (supposed to be), can someone who knows please elaborate?</div>
<div class="gmail_extra"><br><br><div class="gmail_quote"><div><div>On Sun, Oct 6, 2013 at 12:17 AM, Chinmay Patil <span dir="ltr"><<a href="mailto:chinmay.patil@gmail.com" target="_blank">chinmay.patil@gmail.com</a>></span> wrote:<br>
</div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div><div dir="ltr">Hi devs,<div><br></div><div>I was wondering if there are any plans to implement this feature. </div>
<div>
<br></div><div><a href="https://r-forge.r-project.org/tracker/index.php?func=detail&aid=1007&group_id=240&atid=978" target="_blank">https://r-forge.r-project.org/tracker/index.php?func=detail&aid=1007&group_id=240&atid=978</a><br>
</div><div><br></div><div>Alternatively, is there a way to refer to key of the data.table object in "J" function used for subsetting?</div></div>
<br></div></div>_______________________________________________<br>
datatable-help mailing list<br>
<a href="mailto:datatable-help@lists.r-forge.r-project.org" target="_blank">datatable-help@lists.r-forge.r-project.org</a><br>
<a href="https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/datatable-help" target="_blank">https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/datatable-help</a><br></blockquote></div><br></div>
</blockquote></div><br></div>
</blockquote></div>
</div></div></blockquote></div><br></div>