Обсуждение: 6.5 cvs ERROR: copyObject: don't know how to copy 604
Today, I tried cvs version of 6.5 and got following:
c_flats=> explain select station_id from metro_stations except select metro_id from work_flats;
ERROR: copyObject: don't know how to copy 604
c_flats=> select station_id from metro_stations except select metro_id from work_flats;
station_id
---------- 27 41 60 81 92 102 133 134 142 149 150
(11 rows)
Explain fails while select works (didn't check the result though)
Regards,
Oleg
_____________________________________________________________
Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
Sternberg Astronomical Institute, Moscow University (Russia)
Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
phone: +007(095)939-16-83, +007(095)939-23-83
Oleg Bartunov <oleg@sai.msu.su> writes:
> [ EXPLAIN fails on a SELECT ... EXCEPT ... ]
This looks to be another artifact of the fact that EXPLAIN
doesn't invoke the rewriter.
It looks to me like the rewrite-invocation section of
pg_parse_and_plan() needs to be pulled out as a subroutine
so that explain.c can invoke it. Comments? Where should
the new subroutine go? (Probably not in postgres.c...)
regards, tom lane
Is this a valid item? > Oleg Bartunov <oleg@sai.msu.su> writes: > > [ EXPLAIN fails on a SELECT ... EXCEPT ... ] > > This looks to be another artifact of the fact that EXPLAIN > doesn't invoke the rewriter. > > It looks to me like the rewrite-invocation section of > pg_parse_and_plan() needs to be pulled out as a subroutine > so that explain.c can invoke it. Comments? Where should > the new subroutine go? (Probably not in postgres.c...) > > regards, tom lane > > -- Bruce Momjian | http://www.op.net/~candle maillist@candle.pha.pa.us | (610) 853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania19026
Bruce Momjian <maillist@candle.pha.pa.us> writes:
> Is this a valid item?
It was; but I fixed it yesterday. At least it seems to work now.
regards, tom lane
>> Oleg Bartunov <oleg@sai.msu.su> writes:
>>>> [ EXPLAIN fails on a SELECT ... EXCEPT ... ]
>>
>> This looks to be another artifact of the fact that EXPLAIN
>> doesn't invoke the rewriter.
>>
>> It looks to me like the rewrite-invocation section of
>> pg_parse_and_plan() needs to be pulled out as a subroutine
>> so that explain.c can invoke it. Comments? Where should
>> the new subroutine go? (Probably not in postgres.c...)
On Mon, 10 May 1999, Bruce Momjian wrote:
> Date: Mon, 10 May 1999 12:48:15 -0400 (EDT)
> From: Bruce Momjian <maillist@candle.pha.pa.us>
> To: Tom Lane <tgl@sss.pgh.pa.us>
> Cc: Oleg Bartunov <oleg@sai.msu.su>, pgsql-hackers@postgreSQL.org
> Subject: Re: [HACKERS] 6.5 cvs ERROR: copyObject: don't know how to copy 604
>
>
> Is this a valid item?
Can't check this, because of problem to compile cvs:
make[2]: Entering directory /home/postgres/cvs/pgsql/src/lextest'
flex scan.l
gcc -c lex.yy.c
lex.yy.c: In function nput':
lex.yy.c:1046: parse error before )'
lex.yy.c:243: warning: y_flex_realloc' declared tatic' but never defined
lex.yy.c:273: warning: y_fatal_error' declared tatic' but never defined
make[2]: *** [lextest] Error 1
make[2]: Leaving directory /home/postgres/cvs/pgsql/src/lextest'
Will test after somebody fix cvs :-)
mira:~/cvs/pgsql/src$ flex --version
flex version 2.5.4
Regards,
Oleg
>
>
>
> > Oleg Bartunov <oleg@sai.msu.su> writes:
> > > [ EXPLAIN fails on a SELECT ... EXCEPT ... ]
> >
> > This looks to be another artifact of the fact that EXPLAIN
> > doesn't invoke the rewriter.
> >
> > It looks to me like the rewrite-invocation section of
> > pg_parse_and_plan() needs to be pulled out as a subroutine
> > so that explain.c can invoke it. Comments? Where should
> > the new subroutine go? (Probably not in postgres.c...)
> >
> > regards, tom lane
> >
> >
>
>
> --
> Bruce Momjian | http://www.op.net/~candle
> maillist@candle.pha.pa.us | (610) 853-3000
> + If your life is a hard drive, | 830 Blythe Avenue
> + Christ can be your backup. | Drexel Hill, Pennsylvania 19026
>
_____________________________________________________________
Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
Sternberg Astronomical Institute, Moscow University (Russia)
Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
phone: +007(095)939-16-83, +007(095)939-23-83
> On Mon, 10 May 1999, Bruce Momjian wrote: > > > Date: Mon, 10 May 1999 12:48:15 -0400 (EDT) > > From: Bruce Momjian <maillist@candle.pha.pa.us> > > To: Tom Lane <tgl@sss.pgh.pa.us> > > Cc: Oleg Bartunov <oleg@sai.msu.su>, pgsql-hackers@postgreSQL.org > > Subject: Re: [HACKERS] 6.5 cvs ERROR: copyObject: don't know how to copy 604 > > > > > > Is this a valid item? > > Can't check this, because of problem to compile cvs: > > make[2]: Entering directory /home/postgres/cvs/pgsql/src/lextest' > flex scan.l > gcc -c lex.yy.c > lex.yy.c: In function nput': > lex.yy.c:1046: parse error before )' > lex.yy.c:243: warning: y_flex_realloc' declared tatic' but never defined > lex.yy.c:273: warning: y_fatal_error' declared tatic' but never defined > make[2]: *** [lextest] Error 1 > make[2]: Leaving directory /home/postgres/cvs/pgsql/src/lextest' > No one is playing with lextest, I hope. Perhaps it is something there? -- Bruce Momjian | http://www.op.net/~candle maillist@candle.pha.pa.us | (610) 853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania19026
On Mon, 10 May 1999, Bruce Momjian wrote: > Date: Mon, 10 May 1999 12:48:15 -0400 (EDT) > From: Bruce Momjian <maillist@candle.pha.pa.us> > To: Tom Lane <tgl@sss.pgh.pa.us> > Cc: Oleg Bartunov <oleg@sai.msu.su>, pgsql-hackers@postgreSQL.org > Subject: Re: [HACKERS] 6.5 cvs ERROR: copyObject: don't know how to copy 604 > > > Is this a valid item? > After compilation of current cvs at home I test this and it works. But explain shows that select will not use indices, which exists ! select station_id from metro_stations except select metro_id from work_flats; Oleg > > > > Oleg Bartunov <oleg@sai.msu.su> writes: > > > [ EXPLAIN fails on a SELECT ... EXCEPT ... ] > > > > This looks to be another artifact of the fact that EXPLAIN > > doesn't invoke the rewriter. > > > > It looks to me like the rewrite-invocation section of > > pg_parse_and_plan() needs to be pulled out as a subroutine > > so that explain.c can invoke it. Comments? Where should > > the new subroutine go? (Probably not in postgres.c...) > > > > regards, tom lane > > > > > > > -- > Bruce Momjian | http://www.op.net/~candle > maillist@candle.pha.pa.us | (610) 853-3000 > + If your life is a hard drive, | 830 Blythe Avenue > + Christ can be your backup. | Drexel Hill, Pennsylvania 19026 > _____________________________________________________________ Oleg Bartunov, sci.researcher, hostmaster of AstroNet, Sternberg Astronomical Institute, Moscow University (Russia) Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/ phone: +007(095)939-16-83, +007(095)939-23-83
> On Mon, 10 May 1999, Bruce Momjian wrote: > > > Date: Mon, 10 May 1999 12:48:15 -0400 (EDT) > > From: Bruce Momjian <maillist@candle.pha.pa.us> > > To: Tom Lane <tgl@sss.pgh.pa.us> > > Cc: Oleg Bartunov <oleg@sai.msu.su>, pgsql-hackers@postgreSQL.org > > Subject: Re: [HACKERS] 6.5 cvs ERROR: copyObject: don't know how to copy 604 > > > > > > Is this a valid item? > > > > After compilation of current cvs at home I test this and it works. > But explain shows that select will not use indices, which exists ! > select station_id from metro_stations except select metro_id from work_flats; Indexes aren't much use if you don't have a WHERE restriction, no? -- Bruce Momjian | http://www.op.net/~candle maillist@candle.pha.pa.us | (610) 853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania19026
On Tue, 11 May 1999, Bruce Momjian wrote: > Date: Tue, 11 May 1999 12:04:32 -0400 (EDT) > From: Bruce Momjian <maillist@candle.pha.pa.us> > To: Oleg Bartunov <oleg@sai.msu.su> > Cc: Tom Lane <tgl@sss.pgh.pa.us>, pgsql-hackers@postgreSQL.org > Subject: Re: [HACKERS] 6.5 cvs ERROR: copyObject: don't know how to copy 604 > > > On Mon, 10 May 1999, Bruce Momjian wrote: > > > > > Date: Mon, 10 May 1999 12:48:15 -0400 (EDT) > > > From: Bruce Momjian <maillist@candle.pha.pa.us> > > > To: Tom Lane <tgl@sss.pgh.pa.us> > > > Cc: Oleg Bartunov <oleg@sai.msu.su>, pgsql-hackers@postgreSQL.org > > > Subject: Re: [HACKERS] 6.5 cvs ERROR: copyObject: don't know how to copy 604 > > > > > > > > > Is this a valid item? > > > > > > > After compilation of current cvs at home I test this and it works. > > But explain shows that select will not use indices, which exists ! > > select station_id from metro_stations except select metro_id from work_flats; > > Indexes aren't much use if you don't have a WHERE restriction, no? > Oh, yes. Oleg > -- > Bruce Momjian | http://www.op.net/~candle > maillist@candle.pha.pa.us | (610) 853-3000 > + If your life is a hard drive, | 830 Blythe Avenue > + Christ can be your backup. | Drexel Hill, Pennsylvania 19026 > _____________________________________________________________ Oleg Bartunov, sci.researcher, hostmaster of AstroNet, Sternberg Astronomical Institute, Moscow University (Russia) Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/ phone: +007(095)939-16-83, +007(095)939-23-83