postgresql/contrib/cube/cube.sql.in
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

325 lines
7.8 KiB
MySQL

-- Create the user-defined type for N-dimensional boxes
--
-- Adjust this setting to control where the objects get created.
SET search_path = public;
CREATE OR REPLACE FUNCTION cube_in(cstring)
RETURNS cube
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
CREATE OR REPLACE FUNCTION cube(float8[], float8[]) RETURNS cube
AS 'MODULE_PATHNAME', 'cube_a_f8_f8'
LANGUAGE C IMMUTABLE STRICT;
CREATE OR REPLACE FUNCTION cube(float8[]) RETURNS cube
AS 'MODULE_PATHNAME', 'cube_a_f8'
LANGUAGE C IMMUTABLE STRICT;
CREATE OR REPLACE FUNCTION cube_out(cube)
RETURNS cstring
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
CREATE TYPE cube (
INTERNALLENGTH = variable,
INPUT = cube_in,
OUTPUT = cube_out,
ALIGNMENT = double
);
COMMENT ON TYPE cube IS 'multi-dimensional cube ''(FLOAT-1, FLOAT-2, ..., FLOAT-N), (FLOAT-1, FLOAT-2, ..., FLOAT-N)''';
--
-- External C-functions for R-tree methods
--
-- Comparison methods
CREATE OR REPLACE FUNCTION cube_eq(cube, cube)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
COMMENT ON FUNCTION cube_eq(cube, cube) IS 'same as';
CREATE OR REPLACE FUNCTION cube_ne(cube, cube)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
COMMENT ON FUNCTION cube_ne(cube, cube) IS 'different';
CREATE OR REPLACE FUNCTION cube_lt(cube, cube)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
COMMENT ON FUNCTION cube_lt(cube, cube) IS 'lower than';
CREATE OR REPLACE FUNCTION cube_gt(cube, cube)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
COMMENT ON FUNCTION cube_gt(cube, cube) IS 'greater than';
CREATE OR REPLACE FUNCTION cube_le(cube, cube)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
COMMENT ON FUNCTION cube_le(cube, cube) IS 'lower than or equal to';
CREATE OR REPLACE FUNCTION cube_ge(cube, cube)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
COMMENT ON FUNCTION cube_ge(cube, cube) IS 'greater than or equal to';
CREATE OR REPLACE FUNCTION cube_cmp(cube, cube)
RETURNS int4
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
COMMENT ON FUNCTION cube_cmp(cube, cube) IS 'btree comparison function';
CREATE OR REPLACE FUNCTION cube_contains(cube, cube)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
COMMENT ON FUNCTION cube_contains(cube, cube) IS 'contains';
CREATE OR REPLACE FUNCTION cube_contained(cube, cube)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
COMMENT ON FUNCTION cube_contained(cube, cube) IS 'contained in';
CREATE OR REPLACE FUNCTION cube_overlap(cube, cube)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
COMMENT ON FUNCTION cube_overlap(cube, cube) IS 'overlaps';
-- support routines for indexing
CREATE OR REPLACE FUNCTION cube_union(cube, cube)
RETURNS cube
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
CREATE OR REPLACE FUNCTION cube_inter(cube, cube)
RETURNS cube
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
CREATE OR REPLACE FUNCTION cube_size(cube)
RETURNS float8
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
-- Misc N-dimensional functions
CREATE OR REPLACE FUNCTION cube_subset(cube, int4[])
RETURNS cube
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
-- proximity routines
CREATE OR REPLACE FUNCTION cube_distance(cube, cube)
RETURNS float8
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
-- Extracting elements functions
CREATE OR REPLACE FUNCTION cube_dim(cube)
RETURNS int4
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
CREATE OR REPLACE FUNCTION cube_ll_coord(cube, int4)
RETURNS float8
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
CREATE OR REPLACE FUNCTION cube_ur_coord(cube, int4)
RETURNS float8
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
CREATE OR REPLACE FUNCTION cube(float8) RETURNS cube
AS 'MODULE_PATHNAME', 'cube_f8'
LANGUAGE C IMMUTABLE STRICT;
CREATE OR REPLACE FUNCTION cube(float8, float8) RETURNS cube
AS 'MODULE_PATHNAME', 'cube_f8_f8'
LANGUAGE C IMMUTABLE STRICT;
CREATE OR REPLACE FUNCTION cube(cube, float8) RETURNS cube
AS 'MODULE_PATHNAME', 'cube_c_f8'
LANGUAGE C IMMUTABLE STRICT;
CREATE OR REPLACE FUNCTION cube(cube, float8, float8) RETURNS cube
AS 'MODULE_PATHNAME', 'cube_c_f8_f8'
LANGUAGE C IMMUTABLE STRICT;
-- Test if cube is also a point
CREATE OR REPLACE FUNCTION cube_is_point(cube)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
-- Increasing the size of a cube by a radius in at least n dimensions
CREATE OR REPLACE FUNCTION cube_enlarge(cube, float8, int4)
RETURNS cube
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
--
-- OPERATORS
--
CREATE OPERATOR < (
LEFTARG = cube, RIGHTARG = cube, PROCEDURE = cube_lt,
COMMUTATOR = '>', NEGATOR = '>=',
RESTRICT = scalarltsel, JOIN = scalarltjoinsel
);
CREATE OPERATOR > (
LEFTARG = cube, RIGHTARG = cube, PROCEDURE = cube_gt,
COMMUTATOR = '<', NEGATOR = '<=',
RESTRICT = scalargtsel, JOIN = scalargtjoinsel
);
CREATE OPERATOR <= (
LEFTARG = cube, RIGHTARG = cube, PROCEDURE = cube_le,
COMMUTATOR = '>=', NEGATOR = '>',
RESTRICT = scalarltsel, JOIN = scalarltjoinsel
);
CREATE OPERATOR >= (
LEFTARG = cube, RIGHTARG = cube, PROCEDURE = cube_ge,
COMMUTATOR = '<=', NEGATOR = '<',
RESTRICT = scalargtsel, JOIN = scalargtjoinsel
);
CREATE OPERATOR && (
LEFTARG = cube, RIGHTARG = cube, PROCEDURE = cube_overlap,
COMMUTATOR = '&&',
RESTRICT = areasel, JOIN = areajoinsel
);
CREATE OPERATOR = (
LEFTARG = cube, RIGHTARG = cube, PROCEDURE = cube_eq,
COMMUTATOR = '=', NEGATOR = '<>',
RESTRICT = eqsel, JOIN = eqjoinsel,
MERGES
);
CREATE OPERATOR <> (
LEFTARG = cube, RIGHTARG = cube, PROCEDURE = cube_ne,
COMMUTATOR = '<>', NEGATOR = '=',
RESTRICT = neqsel, JOIN = neqjoinsel
);
CREATE OPERATOR @> (
LEFTARG = cube, RIGHTARG = cube, PROCEDURE = cube_contains,
COMMUTATOR = '<@',
RESTRICT = contsel, JOIN = contjoinsel
);
CREATE OPERATOR <@ (
LEFTARG = cube, RIGHTARG = cube, PROCEDURE = cube_contained,
COMMUTATOR = '@>',
RESTRICT = contsel, JOIN = contjoinsel
);
-- these are obsolete/deprecated:
CREATE OPERATOR @ (
LEFTARG = cube, RIGHTARG = cube, PROCEDURE = cube_contains,
COMMUTATOR = '~',
RESTRICT = contsel, JOIN = contjoinsel
);
CREATE OPERATOR ~ (
LEFTARG = cube, RIGHTARG = cube, PROCEDURE = cube_contained,
COMMUTATOR = '@',
RESTRICT = contsel, JOIN = contjoinsel
);
-- define the GiST support methods
CREATE OR REPLACE FUNCTION g_cube_consistent(internal,cube,int4)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE C;
CREATE OR REPLACE FUNCTION g_cube_compress(internal)
RETURNS internal
AS 'MODULE_PATHNAME'
LANGUAGE C;
CREATE OR REPLACE FUNCTION g_cube_decompress(internal)
RETURNS internal
AS 'MODULE_PATHNAME'
LANGUAGE C;
CREATE OR REPLACE FUNCTION g_cube_penalty(internal,internal,internal)
RETURNS internal
AS 'MODULE_PATHNAME'
LANGUAGE C STRICT;
CREATE OR REPLACE FUNCTION g_cube_picksplit(internal, internal)
RETURNS internal
AS 'MODULE_PATHNAME'
LANGUAGE C;
CREATE OR REPLACE FUNCTION g_cube_union(internal, internal)
RETURNS cube
AS 'MODULE_PATHNAME'
LANGUAGE C;
CREATE OR REPLACE FUNCTION g_cube_same(cube, cube, internal)
RETURNS internal
AS 'MODULE_PATHNAME'
LANGUAGE C;
-- Create the operator classes for indexing
CREATE OPERATOR CLASS cube_ops
DEFAULT FOR TYPE cube USING btree AS
OPERATOR 1 < ,
OPERATOR 2 <= ,
OPERATOR 3 = ,
OPERATOR 4 >= ,
OPERATOR 5 > ,
FUNCTION 1 cube_cmp(cube, cube);
CREATE OPERATOR CLASS gist_cube_ops
DEFAULT FOR TYPE cube USING gist AS
OPERATOR 3 && ,
OPERATOR 6 = ,
OPERATOR 7 @> ,
OPERATOR 8 <@ ,
OPERATOR 13 @ ,
OPERATOR 14 ~ ,
FUNCTION 1 g_cube_consistent (internal, cube, int4),
FUNCTION 2 g_cube_union (internal, internal),
FUNCTION 3 g_cube_compress (internal),
FUNCTION 4 g_cube_decompress (internal),
FUNCTION 5 g_cube_penalty (internal, internal, internal),
FUNCTION 6 g_cube_picksplit (internal, internal),
FUNCTION 7 g_cube_same (cube, cube, internal);