On 2017/04/04 14:12, Amit Langote wrote:
> Two kinds of statistics are collected if the table is a inheritance parent.
>
> First kind considers the table by itself and calculates regular
> single-table statistics using rows sampled from the only available heap
> (by calling do_analyze_rel() with inh=false).
Oops, should have also mentioned that this part is not true for the new
partitioned tables. There are single-table statistics for partitioned
tables, because it contains no data.
Thanks,
Amit