Re: TODO item - tid <> operator - Mailing list pgsql-patches

This has been saved for the 8.2 release:

    http://momjian.postgresql.org/cgi-bin/pgpatches_hold

---------------------------------------------------------------------------

Mark Kirkwood wrote:
> Bruce Momjian wrote:
> > Tom Lane wrote:
> >
> >>Bruce Momjian <pgman@candle.pha.pa.us> writes:
> >>
> >>>This has been saved for the 8.2 release:
> >>>    http://momjian.postgresql.org/cgi-bin/pgpatches_hold
> >>
> >>Uh, why do we need this at all?  "NOT (tid = tid)" covers the
> >>functionality already.
> >
> >
> > tid should be a fully functional type, at least for = and !=.
> >
> >
> >>I disagree strongly with renumbering existing hand-assigned OIDs for
> >>this.  There's too much risk of breakage and no benefit.
> >
> >
> > Agreed.
> >
> >
> >>Also, you forgot to add the negator cross-links between the operators.
> >
> >
> > OK.
> >
>
> New patch, with no OID renumbering, plus the negators are there now :-)
> Thanks for the critique guys!
>
> regards
>
> Mark
>
>

> Index: src/backend/utils/adt/tid.c
> ===================================================================
> RCS file: /projects/cvsroot/pgsql/src/backend/utils/adt/tid.c,v
> retrieving revision 1.49
> diff -c -r1.49 tid.c
> *** src/backend/utils/adt/tid.c    27 May 2005 00:57:49 -0000    1.49
> --- src/backend/utils/adt/tid.c    26 Oct 2005 05:07:36 -0000
> ***************
> *** 174,180 ****
>                      arg1->ip_posid == arg2->ip_posid);
>   }
>
> - #ifdef NOT_USED
>   Datum
>   tidne(PG_FUNCTION_ARGS)
>   {
> --- 174,179 ----
> ***************
> *** 185,191 ****
>                      BlockIdGetBlockNumber(&(arg2->ip_blkid)) ||
>                      arg1->ip_posid != arg2->ip_posid);
>   }
> - #endif
>
>   /*
>    *    Functions to get latest tid of a specified tuple.
> --- 184,189 ----
> Index: src/include/utils/builtins.h
> ===================================================================
> RCS file: /projects/cvsroot/pgsql/src/include/utils/builtins.h,v
> retrieving revision 1.267
> diff -c -r1.267 builtins.h
> *** src/include/utils/builtins.h    18 Oct 2005 20:38:58 -0000    1.267
> --- src/include/utils/builtins.h    26 Oct 2005 05:07:37 -0000
> ***************
> *** 530,535 ****
> --- 530,536 ----
>   extern Datum tidrecv(PG_FUNCTION_ARGS);
>   extern Datum tidsend(PG_FUNCTION_ARGS);
>   extern Datum tideq(PG_FUNCTION_ARGS);
> + extern Datum tidne(PG_FUNCTION_ARGS);
>   extern Datum currtid_byreloid(PG_FUNCTION_ARGS);
>   extern Datum currtid_byrelname(PG_FUNCTION_ARGS);
>
> Index: src/include/catalog/pg_proc.h
> ===================================================================
> RCS file: /projects/cvsroot/pgsql/src/include/catalog/pg_proc.h,v
> retrieving revision 1.387
> diff -c -r1.387 pg_proc.h
> *** src/include/catalog/pg_proc.h    15 Oct 2005 02:49:42 -0000    1.387
> --- src/include/catalog/pg_proc.h    26 Oct 2005 05:07:40 -0000
> ***************
> *** 1625,1630 ****
> --- 1625,1632 ----
>   DATA(insert OID = 1291 (  array_length_coerce    PGNSP PGUID 12 f f t f s 3 2277 "2277 23 16" _null_ _null_ _null_
array_length_coerce- _null_ )); 
>   DESCR("adjust any array to new element typmod");
>
> + DATA(insert OID = 2601 ( tidne               PGNSP PGUID 12 f f t f i 2 16 "27 27" _null_ _null_ _null_ tidne -
_null_)); 
> + DESCR("not equal");
>   DATA(insert OID = 1292 ( tideq               PGNSP PGUID 12 f f t f i 2 16 "27 27" _null_ _null_ _null_ tideq -
_null_)); 
>   DESCR("equal");
>   DATA(insert OID = 1293 ( currtid           PGNSP PGUID 12 f f t f v 2 27 "26 27" _null_ _null_ _null_
currtid_byreloid- _null_ )); 
> Index: src/include/catalog/pg_operator.h
> ===================================================================
> RCS file: /projects/cvsroot/pgsql/src/include/catalog/pg_operator.h,v
> retrieving revision 1.137
> diff -c -r1.137 pg_operator.h
> *** src/include/catalog/pg_operator.h    15 Oct 2005 02:49:42 -0000    1.137
> --- src/include/catalog/pg_operator.h    26 Oct 2005 05:07:41 -0000
> ***************
> *** 128,135 ****
>   DATA(insert OID = 389 (  "!!"       PGNSP PGUID l f     0    20    1700   0   0   0   0  0   0 numeric_fac - - ));
>   DATA(insert OID = 385 (  "="       PGNSP PGUID b t    29    29    16 385     0     0     0     0     0 cideq eqsel
eqjoinsel)); 
>   DATA(insert OID = 386 (  "="       PGNSP PGUID b t    22    22    16 386     0     0     0     0     0 int2vectoreq
eqseleqjoinsel )); 
> ! DATA(insert OID = 387 (  "="       PGNSP PGUID b f    27    27    16 387     0     0     0     0     0 tideq eqsel
eqjoinsel)); 
>   #define TIDEqualOperator   387
>
>   DATA(insert OID = 410 ( "="           PGNSP PGUID b t    20    20    16 410 411 412 412 412 413 int8eq eqsel
eqjoinsel)); 
>   DATA(insert OID = 411 ( "<>"       PGNSP PGUID b f    20    20    16 411 410 0 0 0 0 int8ne neqsel neqjoinsel ));
> --- 128,136 ----
>   DATA(insert OID = 389 (  "!!"       PGNSP PGUID l f     0    20    1700   0   0   0   0  0   0 numeric_fac - - ));
>   DATA(insert OID = 385 (  "="       PGNSP PGUID b t    29    29    16 385     0     0     0     0     0 cideq eqsel
eqjoinsel)); 
>   DATA(insert OID = 386 (  "="       PGNSP PGUID b t    22    22    16 386     0     0     0     0     0 int2vectoreq
eqseleqjoinsel )); 
> ! DATA(insert OID = 387 (  "="       PGNSP PGUID b f    27    27    16 387     390 0     0     0     0 tideq eqsel
eqjoinsel)); 
>   #define TIDEqualOperator   387
> + DATA(insert OID = 390 (  "<>"       PGNSP PGUID b f    27    27    16 390     387 0     0     0     0 tidne neqsel
neqjoinsel)); 
>
>   DATA(insert OID = 410 ( "="           PGNSP PGUID b t    20    20    16 410 411 412 412 412 413 int8eq eqsel
eqjoinsel)); 
>   DATA(insert OID = 411 ( "<>"       PGNSP PGUID b f    20    20    16 411 410 0 0 0 0 int8ne neqsel neqjoinsel ));
>

--
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman@candle.pha.pa.us               |  (610) 359-1001
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