non-equi joins update to NEWS. #1452.

Rdatatable · Apr 6, 2016 · 55a7b55 · 55a7b55 · ywhcuhk · Apr 7, 2016
1 parent 1faa8d2
commit 55a7b55
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/README.md b/README.md
@@ -78,6 +78,8 @@
 
   31. `on=.()` syntax is now posible, e.g., `X[Y, on=.(x==a, y==b)]`, [#1257](https://github.com/Rdatatable/data.table/issues/1257). Thanks @dselivanov.
 
+  32. Non-equi joins are now possible using the familiar `on=` syntax. With this, the set of binary operators extend from just `==` to `>=`, `>`, `<=`, `<` and `==`. For e.g., `X[Y, on=.(a, b>b)]` looks for `X.a == Y.a` first and within those matching rows for rows where`X.b > Y.b`. Partly addreses [#1452](https://github.com/Rdatatable/data.table/issues/1452).
+
 #### BUG FIXES
 
   1. Now compiles and runs on IBM AIX gcc. Thanks to Vinh Nguyen for investigation and testing, [#1351](https://github.com/Rdatatable/data.table/issues/1351).