I think you should mention about specific features of some DBMS. This features can boost some queries.

asked Aug 19 '13 at 11:22

Mineav's gravatar image

Mineav
1111


One Answer:

Markus mentioned it in the section about index-only scans

answered Jun 30 '14 at 15:56

klaus%20triendl's gravatar image

klaus triendl
1