On 7th of April 2018, Teodor Sigaev committed patch: Indexes with INCLUDE columns and their support in B-tree This patch introduces INCLUDE clause to index definition. This clause specifies a list of columns which will be included as a non-key part in the ...

On 26th of March, Heikki Linnakangas committed patch: Add support for index-only scans in GiST. This adds a new GiST opclass method, 'fetch', which is used to reconstruct the original Datum from the value stored in the index. Also, the 'canreturn' index AM interface ...