Robert Haas <robertmhaas@gmail.com> wrote:
> Why does this patch #ifdef out the _PG_fini code in pg_stat_statements?
That's because _PG_fini is never called in current releases.
We could remove it completely, but I'd like to leave it for future
releases where _PG_fini callback is re-enabled.
Or, removing #ifdef (enabling _PG_fini function) is also harmless.
> Where you check for INSERT, UPDATE, and DELETE return codes in
> pgss_ProcessUtility, I think this deserves a comment explaining that
> these could occur as a result of EXECUTE. It wasn't obvious to me,
> anyway.
Like this?
/** Parse command tag to retrieve the number of affected rows.* COPY command returns COPY tag. EXECUTE command might
returnINSERT,* UPDATE, or DELETE tags, but we cannot retrieve the number of rows* for SELECT. We assume other commands
alwaysreturn 0 row.*/
> It seems to me that the current hook placement does not address this complaint
> >> I don't see why the hook function should have the ability to
> >> editorialize on the behavior of everything about ProcessUtility
> >> *except* the read-only-xact check.
I moved the initialization code of completionTag as the comment,
but check_xact_readonly() should be called before the hook.
Am I missing something?
Regards,
---
Takahiro Itagaki
NTT Open Source Software Center
