On 05/08/2018 02:49 PM, Ildar Musin wrote:
The main point of this patch was about convenience; the performance thing came out later just as a side effect :) Many users are familiar with "map/reduce/filter" concept that many languages (not only functional ones) utilized. And my though was that it would be great to have those in postgres too.
Map is a feature I have quite often wished to have, but I am not sure it is quite useful enough to be worth adding our own proprietary syntax. It would be a pain if the SQL committee started using MAP for something.
Andreas
