Re: list of extended statistics on psql

Alvaro Herrera <alvherre@2ndquadrant.com> writes:
> If we do put each type in its own row -- at least "logical" row, say
> string_agg(unnest(array_of_types), '\n') -- then we can put the size of each type
> in a separate column with string_agg(unnest(array_of_sizes), '\n')

>  statname |   definition    |         type             |  size
> ----------+-----------------+--------------------------+-----------
>  someobj  | (a, b) FROM tab | n-distinct: built        | 2000 bytes
>                             | func-dependencies: built | 4000 bytes
>  another  | (a, c) FROM tab | n-distint: enabled       | <null>

I guess I'm wondering why the size is of such interest that we
need it at all here.

            regards, tom lane