This slide has introduction on the Derived Dim: http://www.slideshare.net/YangLi43/design-cube-in-apache-kylin
"Joint" is introduced since 1.5.1; Using "joint" to combine multiple dimensions into "one" ; Say if you have Dim A, B, C; among them AB are always appeared together, e.g, "select ... group by A, B" or "select ... where A = xx group by B"; in this case you can declare AB as "joint"; for Kylin it looks like a 2 dim cube: AB, C, the combinations are decreased from 2^3 to 2^2; 2016-06-30 6:56 GMT+08:00 Alberto Ramón <[email protected]>: > Hi > > I don't understand the difference between: > > - Joint Dim (from Dimension Step ) > - Derived Dim (from Advance Setings Step) > > Some example ? :) > -- Best regards, Shaofeng Shi
