Re: Index only scan and ctid

Laurenz Albe <laurenz.albe@cybertec.at> writes:
> I noticed that "ctid" in the select list prevents an index only scan:
> This strikes me as strange, since every index contains "ctid".

There's no provision for an IOS to return a system column, though.
Not sure what it'd take to make that possible.

            regards, tom lane