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Add KNNGIST support to contrib/btree_gist.
This extends GiST's support for nearest-neighbor searches to many of the standard data types. Teodor Sigaev
This commit is contained in:
Tom Lane
@ -171,46 +171,282 @@ ALTER EXTENSION btree_gist ADD operator class gist_inet_ops using gist;
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ALTER EXTENSION btree_gist ADD operator family gist_cidr_ops using gist;
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ALTER EXTENSION btree_gist ADD operator class gist_cidr_ops using gist;
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-- Add functions and operators that are new in 9.1
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--distance operators
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CREATE FUNCTION cash_dist(money, money)
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RETURNS money
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE OPERATOR <-> (
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LEFTARG = money,
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RIGHTARG = money,
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PROCEDURE = cash_dist,
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COMMUTATOR = '<->'
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);
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CREATE FUNCTION date_dist(date, date)
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RETURNS int4
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE OPERATOR <-> (
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LEFTARG = date,
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RIGHTARG = date,
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PROCEDURE = date_dist,
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COMMUTATOR = '<->'
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);
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CREATE FUNCTION float4_dist(float4, float4)
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RETURNS float4
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE OPERATOR <-> (
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LEFTARG = float4,
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RIGHTARG = float4,
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PROCEDURE = float4_dist,
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COMMUTATOR = '<->'
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);
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CREATE FUNCTION float8_dist(float8, float8)
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RETURNS float8
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE OPERATOR <-> (
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LEFTARG = float8,
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RIGHTARG = float8,
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PROCEDURE = float8_dist,
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COMMUTATOR = '<->'
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);
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CREATE FUNCTION int2_dist(int2, int2)
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RETURNS int2
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE OPERATOR <-> (
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LEFTARG = int2,
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RIGHTARG = int2,
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PROCEDURE = int2_dist,
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COMMUTATOR = '<->'
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);
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CREATE FUNCTION int4_dist(int4, int4)
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RETURNS int4
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE OPERATOR <-> (
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LEFTARG = int4,
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RIGHTARG = int4,
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PROCEDURE = int4_dist,
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COMMUTATOR = '<->'
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);
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CREATE FUNCTION int8_dist(int8, int8)
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RETURNS int8
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE OPERATOR <-> (
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LEFTARG = int8,
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RIGHTARG = int8,
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PROCEDURE = int8_dist,
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COMMUTATOR = '<->'
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);
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CREATE FUNCTION interval_dist(interval, interval)
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RETURNS interval
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE OPERATOR <-> (
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LEFTARG = interval,
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RIGHTARG = interval,
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PROCEDURE = interval_dist,
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COMMUTATOR = '<->'
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);
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CREATE FUNCTION oid_dist(oid, oid)
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RETURNS oid
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE OPERATOR <-> (
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LEFTARG = oid,
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RIGHTARG = oid,
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PROCEDURE = oid_dist,
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COMMUTATOR = '<->'
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);
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CREATE FUNCTION time_dist(time, time)
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RETURNS interval
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE OPERATOR <-> (
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LEFTARG = time,
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RIGHTARG = time,
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PROCEDURE = time_dist,
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COMMUTATOR = '<->'
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);
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CREATE FUNCTION ts_dist(timestamp, timestamp)
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RETURNS interval
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE OPERATOR <-> (
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LEFTARG = timestamp,
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RIGHTARG = timestamp,
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PROCEDURE = ts_dist,
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COMMUTATOR = '<->'
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);
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CREATE FUNCTION tstz_dist(timestamptz, timestamptz)
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RETURNS interval
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE OPERATOR <-> (
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LEFTARG = timestamptz,
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RIGHTARG = timestamptz,
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PROCEDURE = tstz_dist,
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COMMUTATOR = '<->'
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);
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-- Support functions for distance operators
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CREATE FUNCTION gbt_oid_distance(internal,oid,int2,oid)
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RETURNS float8
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE FUNCTION gbt_int2_distance(internal,int2,int2,oid)
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RETURNS float8
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE FUNCTION gbt_int4_distance(internal,int4,int2,oid)
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RETURNS float8
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE FUNCTION gbt_int8_distance(internal,int8,int2,oid)
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RETURNS float8
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE FUNCTION gbt_float4_distance(internal,float4,int2,oid)
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RETURNS float8
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE FUNCTION gbt_float8_distance(internal,float8,int2,oid)
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RETURNS float8
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE FUNCTION gbt_ts_distance(internal,timestamp,int2,oid)
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RETURNS float8
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE FUNCTION gbt_tstz_distance(internal,timestamptz,int2,oid)
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RETURNS float8
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE FUNCTION gbt_time_distance(internal,time,int2,oid)
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RETURNS float8
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE FUNCTION gbt_date_distance(internal,date,int2,oid)
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RETURNS float8
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE FUNCTION gbt_intv_distance(internal,interval,int2,oid)
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RETURNS float8
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE FUNCTION gbt_cash_distance(internal,money,int2,oid)
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RETURNS float8
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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-- Add new-in-9.1 stuff to the operator classes.
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ALTER OPERATOR FAMILY gist_oid_ops USING gist ADD
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OPERATOR 6 <> (oid, oid) ;
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OPERATOR 6 <> (oid, oid) ,
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OPERATOR 15 <-> (oid, oid) FOR ORDER BY pg_catalog.oid_ops ,
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FUNCTION 8 (oid, oid) gbt_oid_distance (internal, oid, int2, oid) ;
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ALTER OPERATOR FAMILY gist_int2_ops USING gist ADD
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OPERATOR 6 <> (int2, int2) ;
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OPERATOR 6 <> (int2, int2) ,
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OPERATOR 15 <-> (int2, int2) FOR ORDER BY pg_catalog.integer_ops ,
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FUNCTION 8 (int2, int2) gbt_int2_distance (internal, int2, int2, oid) ;
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ALTER OPERATOR FAMILY gist_int4_ops USING gist ADD
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OPERATOR 6 <> (int4, int4) ;
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OPERATOR 6 <> (int4, int4) ,
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OPERATOR 15 <-> (int4, int4) FOR ORDER BY pg_catalog.integer_ops ,
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FUNCTION 8 (int4, int4) gbt_int4_distance (internal, int4, int2, oid) ;
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ALTER OPERATOR FAMILY gist_int8_ops USING gist ADD
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OPERATOR 6 <> (int8, int8) ;
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OPERATOR 6 <> (int8, int8) ,
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OPERATOR 15 <-> (int8, int8) FOR ORDER BY pg_catalog.integer_ops ,
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FUNCTION 8 (int8, int8) gbt_int8_distance (internal, int8, int2, oid) ;
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ALTER OPERATOR FAMILY gist_float4_ops USING gist ADD
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OPERATOR 6 <> (float4, float4) ;
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OPERATOR 6 <> (float4, float4) ,
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OPERATOR 15 <-> (float4, float4) FOR ORDER BY pg_catalog.float_ops ,
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FUNCTION 8 (float4, float4) gbt_float4_distance (internal, float4, int2, oid) ;
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ALTER OPERATOR FAMILY gist_float8_ops USING gist ADD
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OPERATOR 6 <> (float8, float8) ;
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OPERATOR 6 <> (float8, float8) ,
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OPERATOR 15 <-> (float8, float8) FOR ORDER BY pg_catalog.float_ops ,
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FUNCTION 8 (float8, float8) gbt_float8_distance (internal, float8, int2, oid) ;
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ALTER OPERATOR FAMILY gist_timestamp_ops USING gist ADD
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OPERATOR 6 <> (timestamp, timestamp) ;
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OPERATOR 6 <> (timestamp, timestamp) ,
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OPERATOR 15 <-> (timestamp, timestamp) FOR ORDER BY pg_catalog.interval_ops ,
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FUNCTION 8 (timestamp, timestamp) gbt_ts_distance (internal, timestamp, int2, oid) ;
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ALTER OPERATOR FAMILY gist_timestamptz_ops USING gist ADD
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OPERATOR 6 <> (timestamptz, timestamptz) ;
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OPERATOR 6 <> (timestamptz, timestamptz) ,
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OPERATOR 15 <-> (timestamptz, timestamptz) FOR ORDER BY pg_catalog.interval_ops ,
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FUNCTION 8 (timestamptz, timestamptz) gbt_tstz_distance (internal, timestamptz, int2, oid) ;
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ALTER OPERATOR FAMILY gist_time_ops USING gist ADD
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OPERATOR 6 <> (time, time) ;
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OPERATOR 6 <> (time, time) ,
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OPERATOR 15 <-> (time, time) FOR ORDER BY pg_catalog.interval_ops ,
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FUNCTION 8 (time, time) gbt_time_distance (internal, time, int2, oid) ;
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ALTER OPERATOR FAMILY gist_timetz_ops USING gist ADD
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OPERATOR 6 <> (timetz, timetz) ;
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ALTER OPERATOR FAMILY gist_date_ops USING gist ADD
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OPERATOR 6 <> (date, date) ;
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OPERATOR 6 <> (date, date) ,
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OPERATOR 15 <-> (date, date) FOR ORDER BY pg_catalog.integer_ops ,
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FUNCTION 8 (date, date) gbt_date_distance (internal, date, int2, oid) ;
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ALTER OPERATOR FAMILY gist_interval_ops USING gist ADD
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OPERATOR 6 <> (interval, interval) ;
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OPERATOR 6 <> (interval, interval) ,
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OPERATOR 15 <-> (interval, interval) FOR ORDER BY pg_catalog.interval_ops ,
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FUNCTION 8 (interval, interval) gbt_intv_distance (internal, interval, int2, oid) ;
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ALTER OPERATOR FAMILY gist_cash_ops USING gist ADD
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OPERATOR 6 <> (money, money) ;
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OPERATOR 6 <> (money, money) ,
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OPERATOR 15 <-> (money, money) FOR ORDER BY pg_catalog.money_ops ,
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FUNCTION 8 (money, money) gbt_cash_distance (internal, money, int2, oid) ;
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ALTER OPERATOR FAMILY gist_macaddr_ops USING gist ADD
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OPERATOR 6 <> (macaddr, macaddr) ;
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