Robert Haas <robertmh...@gmail.com> writes: > On Thu, Mar 29, 2012 at 11:23 AM, Tom Lane <t...@sss.pgh.pa.us> wrote: >> However, I think there is a solution for that, though it may sound a bit >> ugly. Rather than just stacking a flag, let's stack the query source >> text pointer for the utility statement. Then in the executor hooks, >> if that pointer is *pointer* equal (not strcmp equal) to the optimizable >> statement's source-text pointer, we know we are executing the "same" >> statement as the surrounding utility command, and we do nothing.
> Without wishing to tick you off, that sounds both ugly and fragile. What do you object to --- the pointer-equality part? We could do strcmp comparison instead, on the assumption that a utility command could not look the same as an optimizable statement except in the case we care about. I think that's probably unnecessary though. > Can't we find a way to set the stacked flag (on the top stack frame) > after planning and before execution? That would require a way for pg_stat_statements to get control at rather random places in several different types of utility statements. And if we did add hook functions in those places, you'd still need to have sufficient stacked context for those hooks to know what to do, which leads you right back to this I think. regards, tom lane -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers