Re: "append" takes a lot of time in a query

[Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>]

Frank Dekervel <frank(dot)dekervel(at)smartlounge(dot)be> writes:
> this turns this query in an append of a whole lot of seq scan/ index scan's. 
> These scans are predictably quick, but the "append" takes 5 seconds (and the 
> numbers of the scans do not add up to the append actual time)

It says 5 milliseconds, not 5 seconds.

> Does someone have an explanation / possible solution for this performance ?

Rethink your schema --- this is pushing the inheritance feature far
beyond what it's designed to do.

			regards, tom lane