Commit Graph

20 Commits

Author SHA1 Message Date
Tom Lane
31edbadf4a Downgrade implicit casts to text to be assignment-only, except for the ones
from the other string-category types; this eliminates a lot of surprising
interpretations that the parser could formerly make when there was no directly
applicable operator.

Create a general mechanism that supports casts to and from the standard string
types (text,varchar,bpchar) for *every* datatype, by invoking the datatype's
I/O functions.  These new casts are assignment-only in the to-string direction,
explicit-only in the other, and therefore should create no surprising behavior.
Remove a bunch of thereby-obsoleted datatype-specific casting functions.

The "general mechanism" is a new expression node type CoerceViaIO that can
actually convert between *any* two datatypes if their external text
representations are compatible.  This is more general than needed for the
immediate feature, but might be useful in plpgsql or other places in future.

This commit does nothing about the issue that applying the concatenation
operator || to non-text types will now fail, often with strange error messages
due to misinterpreting the operator as array concatenation.  Since it often
(not always) worked before, we should either make it succeed or at least give
a more user-friendly error; but details are still under debate.

Peter Eisentraut and Tom Lane
2007-06-05 21:31:09 +00:00
Tom Lane
684ad6a92f Rename contrib contains/contained-by operators to @> and <@, per discussion. 2006-09-10 17:36:52 +00:00
Bruce Momjian
796de9c1ed /contrib/cube improvements:
Update the calling convention for all external facing functions. By
external facing, I mean all functions that are directly referenced in
cube.sql. Prior to my update, all functions used the older V0 calling
convention. They now use V1.

New Functions:

cube(float[]), which makes a zero volume cube from a float array

cube(float[], float[]), which allows the user to create a cube from
two float arrays; one for the upper right and one for the lower left
coordinate.

cube_subset(cube, int4[]), to allow you to reorder or choose a subset of
dimensions from a cube, using index values specified in the array.

Joshua Reich
2006-07-25 23:23:45 +00:00
Peter Eisentraut
7f4f42fa10 Clean up CREATE FUNCTION syntax usage in contrib and elsewhere, in
particular get rid of single quotes around language names and old WITH ()
construct.
2006-02-27 16:09:50 +00:00
Tom Lane
dcf2e1c8c7 Remove the << >> &< and &> operators for contrib/cube, which were
wrong, but nobody noticed because they were also useless.
2005-06-27 01:19:43 +00:00
Teodor Sigaev
f2c064afcb Cleanup vectors of GISTENTRY and eliminate problem with 64-bit strict-aligned
boxes. Change interface to user-defined GiST support methods union and
picksplit. Now instead of bytea struct it used special GistEntryVector
structure.
2004-03-30 15:45:33 +00:00
Tom Lane
03e47392e0 Make contrib/cube work with flex 2.5.31. Fix it up to have a real
btree operator class, too, since in PG 7.4 you can't GROUP without one.
2003-09-14 01:52:25 +00:00
Tom Lane
f85f43dfb5 Backend support for autocommit removed, per recent discussions. The
only remnant of this failed experiment is that the server will take
SET AUTOCOMMIT TO ON.  Still TODO: provide some client-side autocommit
logic in libpq.
2003-05-14 03:26:03 +00:00
Bruce Momjian
80b3513d57 The attached patch provides cube with 4 functions for building cubes
directly from float8 values. (As opposed to converting the values to
strings
and then parsing the strings.)
The functions are:
cube(float8) returns cube
cube(float8,float8) returns cube
cube(cube,float8) returns cube
cube(cube,float8,float8) returns cube

Bruno Wolff III
2003-02-13 05:26:50 +00:00
Bruce Momjian
c464212421 When I made the cube(text) function for 7.3, I neglected to add a
matching create cast command. The attached diff adds a create cast as
assignment to cube.sql.in .

Bruno Wolff III
2002-11-23 03:50:50 +00:00
Bruce Momjian
aa4c702eac Update /contrib for "autocommit TO 'on'".
Create objects in public schema.

Make spacing/capitalization consistent.

Remove transaction block use for object creation.

Remove unneeded function GRANTs.
2002-10-18 18:41:22 +00:00
Bruce Momjian
e57ab04565 This is a comprehensive set of diffs (versus current CVS) that replaces those
attached to the same message with the Earth Distance patches.
Recent changes include changing the subscript in one place I forgot
in the previous bugfix patch. A couple of added regression tests, which
should help catch this mistake if it reappears.
I also put in a limit of 100 dimensions in cube_large and cube_in to
prevent making it easy to create very large cubes. Changing one define
in cubedata.h will raise the limit if some needs more dimensions.

Bruno Wolff III
2002-09-12 00:26:00 +00:00
Bruce Momjian
32784cddf1 The changes I have made are described in CHANGES. This was based on
diffs to 7.3-devel and may not be applicable to 7.2. I have included a
change covered by a previous bugfix patch I submitted (the problem with
-.1 not being accepted by cube_in). It does not include a fix for the
potential buffer overrun issue I reported for cube_yyerror in
cubeparse.y.


Bruno Wolff III
2002-08-29 23:03:58 +00:00
Tom Lane
b663f3443b Add a bunch of pseudo-types to replace the behavior formerly associated
with OPAQUE, as per recent pghackers discussion.  I still want to do some
more work on the 'cstring' pseudo-type, but I'm going to commit the bulk
of the changes now before the tree starts shifting under me ...
2002-08-22 00:01:51 +00:00
Tom Lane
e1b040a7c3 Fix potential buffer overrun in cube_out(), per report from
Bruno Wolff.
2002-08-18 20:15:52 +00:00
Tom Lane
65b6868b13 Replace ad-hoc insertions into pg_opclass and friends with CREATE
OPERATOR CLASS commands.  Further tweaking of documentation for same.
2002-07-30 17:34:37 +00:00
Tom Lane
27a54ae282 Opclasses live in namespaces. I also took the opportunity to create
an 'opclass owner' column in pg_opclass.  Nothing is done with it at
present, but since there are plans to invent a CREATE OPERATOR CLASS
command soon, we'll probably want DROP OPERATOR CLASS too, which
suggests that a notion of ownership would be a good idea.
2002-04-17 20:57:57 +00:00
Tom Lane
f933766ba7 Restructure pg_opclass, pg_amop, and pg_amproc per previous discussions in
pgsql-hackers.  pg_opclass now has a row for each opclass supported by each
index AM, not a row for each opclass name.  This allows pg_opclass to show
directly whether an AM supports an opclass, and furthermore makes it possible
to store additional information about an opclass that might be AM-dependent.
pg_opclass and pg_amop now store "lossy" and "haskeytype" information that we
previously expected the user to remember to provide in CREATE INDEX commands.
Lossiness is no longer an index-level property, but is associated with the
use of a particular operator in a particular index opclass.

Along the way, IndexSupportInitialize now uses the syscaches to retrieve
pg_amop and pg_amproc entries.  I find this reduces backend launch time by
about ten percent, at the cost of a couple more special cases in catcache.c's
IndexScanOK.

Initial work by Oleg Bartunov and Teodor Sigaev, further hacking by Tom Lane.

initdb forced.
2001-08-21 16:36:06 +00:00
Bruce Momjian
13923be7c8 1. null-safe interface to GiST
(as proposed in http://fts.postgresql.org/db/mw/msg.html?mid=1028327)

2. support for 'pass-by-value' arguments - to test this
   we used special opclass for int4 with values in range [0-2^15]
   More testing will be done after resolving problem with
   index_formtuple and implementation of B-tree using GiST

3. small patch to contrib modules (seg,cube,rtree_gist,intarray) -
   mark functions as 'isstrict' where needed.

Oleg Bartunov
2001-08-10 14:34:28 +00:00
Tom Lane
9892ddf5ee Gene Selkov's CUBE datatype (GiST example code) 2000-12-11 20:39:15 +00:00