postgresql/contrib/seg/seg.sql.in
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

395 lines
11 KiB
MySQL

-- Create the user-defined type for 1-D floating point intervals (seg)
--
BEGIN TRANSACTION;
CREATE FUNCTION seg_in(opaque)
RETURNS opaque
AS 'MODULE_PATHNAME'
LANGUAGE 'c';
CREATE FUNCTION seg_out(opaque)
RETURNS opaque
AS 'MODULE_PATHNAME'
LANGUAGE 'c';
CREATE TYPE seg (
internallength = 12,
input = seg_in,
output = seg_out
);
COMMENT ON TYPE seg IS
'floating point interval ''FLOAT .. FLOAT'', ''.. FLOAT'', ''FLOAT ..'' or ''FLOAT''';
--
-- External C-functions for R-tree methods
--
-- Left/Right methods
CREATE FUNCTION seg_over_left(seg, seg) RETURNS bool
AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
COMMENT ON FUNCTION seg_over_left(seg, seg) IS
'is over and left of';
CREATE FUNCTION seg_over_right(seg, seg) RETURNS bool
AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
COMMENT ON FUNCTION seg_over_right(seg, seg) IS
'is over and right of';
CREATE FUNCTION seg_left(seg, seg) RETURNS bool
AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
COMMENT ON FUNCTION seg_left(seg, seg) IS
'is left of';
CREATE FUNCTION seg_right(seg, seg) RETURNS bool
AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
COMMENT ON FUNCTION seg_right(seg, seg) IS
'is right of';
-- Comparison methods
CREATE FUNCTION seg_lt(seg, seg) RETURNS bool
AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
COMMENT ON FUNCTION seg_lt(seg, seg) IS
'less than';
CREATE FUNCTION seg_le(seg, seg) RETURNS bool
AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
COMMENT ON FUNCTION seg_le(seg, seg) IS
'less than or equal';
CREATE FUNCTION seg_gt(seg, seg) RETURNS bool
AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
COMMENT ON FUNCTION seg_gt(seg, seg) IS
'greater than';
CREATE FUNCTION seg_ge(seg, seg) RETURNS bool
AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
COMMENT ON FUNCTION seg_ge(seg, seg) IS
'greater than or equal';
CREATE FUNCTION seg_contains(seg, seg) RETURNS bool
AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
COMMENT ON FUNCTION seg_contains(seg, seg) IS
'contains';
CREATE FUNCTION seg_contained(seg, seg) RETURNS bool
AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
COMMENT ON FUNCTION seg_contained(seg, seg) IS
'contained in';
CREATE FUNCTION seg_overlap(seg, seg) RETURNS bool
AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
COMMENT ON FUNCTION seg_overlap(seg, seg) IS
'overlaps';
CREATE FUNCTION seg_same(seg, seg) RETURNS bool
AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
COMMENT ON FUNCTION seg_same(seg, seg) IS
'same as';
CREATE FUNCTION seg_different(seg, seg) RETURNS bool
AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
COMMENT ON FUNCTION seg_different(seg, seg) IS
'different';
-- support routines for indexing
CREATE FUNCTION seg_union(seg, seg) RETURNS seg
AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
CREATE FUNCTION seg_inter(seg, seg) RETURNS seg
AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
CREATE FUNCTION seg_size(seg) RETURNS float4
AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
-- miscellaneous
CREATE FUNCTION seg_upper(seg) RETURNS float4
AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
CREATE FUNCTION seg_lower(seg) RETURNS float4
AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
--
-- OPERATORS
--
CREATE OPERATOR < (
LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_lt,
COMMUTATOR = '>', NEGATOR = '>=',
RESTRICT = scalarltsel, JOIN = scalarltjoinsel
);
CREATE OPERATOR <= (
LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_le,
COMMUTATOR = '>=', NEGATOR = '>',
RESTRICT = scalarltsel, JOIN = scalarltjoinsel
);
CREATE OPERATOR > (
LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_gt,
COMMUTATOR = '<', NEGATOR = '<=',
RESTRICT = scalargtsel, JOIN = scalargtjoinsel
);
CREATE OPERATOR >= (
LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_ge,
COMMUTATOR = '<=', NEGATOR = '<',
RESTRICT = scalargtsel, JOIN = scalargtjoinsel
);
CREATE OPERATOR << (
LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_left,
COMMUTATOR = '>>',
RESTRICT = positionsel, JOIN = positionjoinsel
);
CREATE OPERATOR &< (
LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_over_left,
COMMUTATOR = '&>',
RESTRICT = positionsel, JOIN = positionjoinsel
);
CREATE OPERATOR && (
LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_overlap,
COMMUTATOR = '&&',
RESTRICT = positionsel, JOIN = positionjoinsel
);
CREATE OPERATOR &> (
LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_over_right,
COMMUTATOR = '&<',
RESTRICT = positionsel, JOIN = positionjoinsel
);
CREATE OPERATOR >> (
LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_right,
COMMUTATOR = '<<',
RESTRICT = positionsel, JOIN = positionjoinsel
);
CREATE OPERATOR = (
LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_same,
COMMUTATOR = '=', NEGATOR = '<>',
RESTRICT = eqsel, JOIN = eqjoinsel,
SORT1 = '<', SORT2 = '<'
);
CREATE OPERATOR <> (
LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_different,
COMMUTATOR = '<>', NEGATOR = '=',
RESTRICT = neqsel, JOIN = neqjoinsel
);
CREATE OPERATOR @ (
LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_contains,
COMMUTATOR = '~',
RESTRICT = contsel, JOIN = contjoinsel
);
CREATE OPERATOR ~ (
LEFTARG = seg, RIGHTARG = seg, PROCEDURE = seg_contained,
COMMUTATOR = '@',
RESTRICT = contsel, JOIN = contjoinsel
);
-- define the GiST support methods
CREATE FUNCTION gseg_consistent(opaque,seg,int4) RETURNS bool
AS 'MODULE_PATHNAME' LANGUAGE 'c';
CREATE FUNCTION gseg_compress(opaque) RETURNS opaque
AS 'MODULE_PATHNAME' LANGUAGE 'c';
CREATE FUNCTION gseg_decompress(opaque) RETURNS opaque
AS 'MODULE_PATHNAME' LANGUAGE 'c';
CREATE FUNCTION gseg_penalty(opaque,opaque,opaque) RETURNS opaque
AS 'MODULE_PATHNAME' LANGUAGE 'c' with (isstrict);
CREATE FUNCTION gseg_picksplit(opaque, opaque) RETURNS opaque
AS 'MODULE_PATHNAME' LANGUAGE 'c';
CREATE FUNCTION gseg_union(bytea, opaque) RETURNS seg
AS 'MODULE_PATHNAME' LANGUAGE 'c';
CREATE FUNCTION gseg_same(seg, seg, opaque) RETURNS opaque
AS 'MODULE_PATHNAME' LANGUAGE 'c';
-- register the default opclass for indexing
INSERT INTO pg_opclass (opcamid, opcname, opcintype, opcdefault, opckeytype)
VALUES (
(SELECT oid FROM pg_am WHERE amname = 'gist'),
'gist_seg_ops',
(SELECT oid FROM pg_type WHERE typname = 'seg'),
true,
0);
-- get the comparators for segments and store them in a tmp table
SELECT o.oid AS opoid, o.oprname
INTO TEMP TABLE seg_ops_tmp
FROM pg_operator o, pg_type t
WHERE o.oprleft = t.oid and o.oprright = t.oid
and t.typname = 'seg';
-- make sure we have the right operators
-- SELECT * from seg_ops_tmp;
-- using the tmp table, generate the amop entries
-- seg_left
INSERT INTO pg_amop (amopclaid, amopstrategy, amopreqcheck, amopopr)
SELECT opcl.oid, 1, false, c.opoid
FROM pg_opclass opcl, seg_ops_tmp c
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and c.oprname = '<<';
-- seg_overleft
INSERT INTO pg_amop (amopclaid, amopstrategy, amopreqcheck, amopopr)
SELECT opcl.oid, 2, false, c.opoid
FROM pg_opclass opcl, seg_ops_tmp c
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and c.oprname = '&<';
-- seg_overlap
INSERT INTO pg_amop (amopclaid, amopstrategy, amopreqcheck, amopopr)
SELECT opcl.oid, 3, false, c.opoid
FROM pg_opclass opcl, seg_ops_tmp c
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and c.oprname = '&&';
-- seg_overright
INSERT INTO pg_amop (amopclaid, amopstrategy, amopreqcheck, amopopr)
SELECT opcl.oid, 4, false, c.opoid
FROM pg_opclass opcl, seg_ops_tmp c
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and c.oprname = '&>';
-- seg_right
INSERT INTO pg_amop (amopclaid, amopstrategy, amopreqcheck, amopopr)
SELECT opcl.oid, 5, false, c.opoid
FROM pg_opclass opcl, seg_ops_tmp c
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and c.oprname = '>>';
-- seg_same
INSERT INTO pg_amop (amopclaid, amopstrategy, amopreqcheck, amopopr)
SELECT opcl.oid, 6, false, c.opoid
FROM pg_opclass opcl, seg_ops_tmp c
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and c.oprname = '=';
-- seg_contains
INSERT INTO pg_amop (amopclaid, amopstrategy, amopreqcheck, amopopr)
SELECT opcl.oid, 7, false, c.opoid
FROM pg_opclass opcl, seg_ops_tmp c
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and c.oprname = '@';
-- seg_contained
INSERT INTO pg_amop (amopclaid, amopstrategy, amopreqcheck, amopopr)
SELECT opcl.oid, 8, false, c.opoid
FROM pg_opclass opcl, seg_ops_tmp c
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and c.oprname = '~';
DROP TABLE seg_ops_tmp;
-- add the entries to amproc for the support methods
-- note the amprocnum numbers associated with each are specific!
INSERT INTO pg_amproc (amopclaid, amprocnum, amproc)
SELECT opcl.oid, 1, pro.oid
FROM pg_opclass opcl, pg_proc pro
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and proname = 'gseg_consistent';
INSERT INTO pg_amproc (amopclaid, amprocnum, amproc)
SELECT opcl.oid, 2, pro.oid
FROM pg_opclass opcl, pg_proc pro
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and proname = 'gseg_union';
INSERT INTO pg_amproc (amopclaid, amprocnum, amproc)
SELECT opcl.oid, 3, pro.oid
FROM pg_opclass opcl, pg_proc pro
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and proname = 'gseg_compress';
INSERT INTO pg_amproc (amopclaid, amprocnum, amproc)
SELECT opcl.oid, 4, pro.oid
FROM pg_opclass opcl, pg_proc pro
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and proname = 'gseg_decompress';
INSERT INTO pg_amproc (amopclaid, amprocnum, amproc)
SELECT opcl.oid, 5, pro.oid
FROM pg_opclass opcl, pg_proc pro
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and proname = 'gseg_penalty';
INSERT INTO pg_amproc (amopclaid, amprocnum, amproc)
SELECT opcl.oid, 6, pro.oid
FROM pg_opclass opcl, pg_proc pro
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and proname = 'gseg_picksplit';
INSERT INTO pg_amproc (amopclaid, amprocnum, amproc)
SELECT opcl.oid, 7, pro.oid
FROM pg_opclass opcl, pg_proc pro
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and proname = 'gseg_same';
END TRANSACTION;