Adding upstream version 15.4.upstream/15.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

68 files changed, 3640 insertions, 0 deletions

diff --git a/contrib/btree_gin/.gitignore b/contrib/btree_gin/.gitignore
new file mode 100644
index 0000000..5dcb3ff
--- /dev/null
+++ b/contrib/btree_gin/.gitignore
@@ -0,0 +1,4 @@
+# Generated subdirectories
+/log/
+/results/
+/tmp_check/
diff --git a/contrib/btree_gin/Makefile b/contrib/btree_gin/Makefile
new file mode 100644
index 0000000..0a15811
--- /dev/null
+++ b/contrib/btree_gin/Makefile
@@ -0,0 +1,27 @@
+# contrib/btree_gin/Makefile
+
+MODULE_big = btree_gin
+OBJS = \
+	$(WIN32RES) \
+	btree_gin.o
+
+EXTENSION = btree_gin
+DATA = btree_gin--1.0.sql btree_gin--1.0--1.1.sql btree_gin--1.1--1.2.sql \
+	 btree_gin--1.2--1.3.sql
+PGFILEDESC = "btree_gin - B-tree equivalent GIN operator classes"
+
+REGRESS = install_btree_gin int2 int4 int8 float4 float8 money oid \
+	timestamp timestamptz time timetz date interval \
+	macaddr macaddr8 inet cidr text varchar char bytea bit varbit \
+	numeric enum uuid name bool bpchar
+
+ifdef USE_PGXS
+PG_CONFIG = pg_config
+PGXS := $(shell $(PG_CONFIG) --pgxs)
+include $(PGXS)
+else
+subdir = contrib/btree_gin
+top_builddir = ../..
+include $(top_builddir)/src/Makefile.global
+include $(top_srcdir)/contrib/contrib-global.mk
+endif
diff --git a/contrib/btree_gin/btree_gin--1.0--1.1.sql b/contrib/btree_gin/btree_gin--1.0--1.1.sql
new file mode 100644
index 0000000..dd81d27
--- /dev/null
+++ b/contrib/btree_gin/btree_gin--1.0--1.1.sql
@@ -0,0 +1,35 @@
+/* contrib/btree_gin/btree_gin--1.0--1.1.sql */
+
+-- complain if script is sourced in psql, rather than via CREATE EXTENSION
+\echo Use "ALTER EXTENSION btree_gin UPDATE TO '1.1'" to load this file. \quit
+
+-- macaddr8 datatype support new in 10.0.
+CREATE FUNCTION gin_extract_value_macaddr8(macaddr8, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_macaddr8(macaddr8, macaddr8, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_macaddr8(macaddr8, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS macaddr8_ops
+DEFAULT FOR TYPE macaddr8 USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       macaddr8_cmp(macaddr8, macaddr8),
+    FUNCTION        2       gin_extract_value_macaddr8(macaddr8, internal),
+    FUNCTION        3       gin_extract_query_macaddr8(macaddr8, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_macaddr8(macaddr8, macaddr8, int2, internal),
+STORAGE         macaddr8;
diff --git a/contrib/btree_gin/btree_gin--1.0.sql b/contrib/btree_gin/btree_gin--1.0.sql
new file mode 100644
index 0000000..cf867ef
--- /dev/null
+++ b/contrib/btree_gin/btree_gin--1.0.sql
@@ -0,0 +1,689 @@
+/* contrib/btree_gin/btree_gin--1.0.sql */
+
+-- complain if script is sourced in psql, rather than via CREATE EXTENSION
+\echo Use "CREATE EXTENSION btree_gin" to load this file. \quit
+
+CREATE FUNCTION gin_btree_consistent(internal, int2, anyelement, int4, internal, internal)
+RETURNS bool
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_value_int2(int2, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_int2(int2, int2, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_int2(int2, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS int2_ops
+DEFAULT FOR TYPE int2 USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       btint2cmp(int2,int2),
+    FUNCTION        2       gin_extract_value_int2(int2, internal),
+    FUNCTION        3       gin_extract_query_int2(int2, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_int2(int2,int2,int2, internal),
+STORAGE         int2;
+
+CREATE FUNCTION gin_extract_value_int4(int4, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_int4(int4, int4, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_int4(int4, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS int4_ops
+DEFAULT FOR TYPE int4 USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       btint4cmp(int4,int4),
+    FUNCTION        2       gin_extract_value_int4(int4, internal),
+    FUNCTION        3       gin_extract_query_int4(int4, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_int4(int4,int4,int2, internal),
+STORAGE         int4;
+
+CREATE FUNCTION gin_extract_value_int8(int8, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_int8(int8, int8, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_int8(int8, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS int8_ops
+DEFAULT FOR TYPE int8 USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       btint8cmp(int8,int8),
+    FUNCTION        2       gin_extract_value_int8(int8, internal),
+    FUNCTION        3       gin_extract_query_int8(int8, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_int8(int8,int8,int2, internal),
+STORAGE         int8;
+
+CREATE FUNCTION gin_extract_value_float4(float4, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_float4(float4, float4, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_float4(float4, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS float4_ops
+DEFAULT FOR TYPE float4 USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       btfloat4cmp(float4,float4),
+    FUNCTION        2       gin_extract_value_float4(float4, internal),
+    FUNCTION        3       gin_extract_query_float4(float4, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_float4(float4,float4,int2, internal),
+STORAGE         float4;
+
+CREATE FUNCTION gin_extract_value_float8(float8, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_float8(float8, float8, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_float8(float8, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS float8_ops
+DEFAULT FOR TYPE float8 USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       btfloat8cmp(float8,float8),
+    FUNCTION        2       gin_extract_value_float8(float8, internal),
+    FUNCTION        3       gin_extract_query_float8(float8, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_float8(float8,float8,int2, internal),
+STORAGE         float8;
+
+CREATE FUNCTION gin_extract_value_money(money, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_money(money, money, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_money(money, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS money_ops
+DEFAULT FOR TYPE money USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       cash_cmp(money,money),
+    FUNCTION        2       gin_extract_value_money(money, internal),
+    FUNCTION        3       gin_extract_query_money(money, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_money(money,money,int2, internal),
+STORAGE         money;
+
+CREATE FUNCTION gin_extract_value_oid(oid, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_oid(oid, oid, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_oid(oid, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS oid_ops
+DEFAULT FOR TYPE oid USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       btoidcmp(oid,oid),
+    FUNCTION        2       gin_extract_value_oid(oid, internal),
+    FUNCTION        3       gin_extract_query_oid(oid, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_oid(oid,oid,int2, internal),
+STORAGE         oid;
+
+CREATE FUNCTION gin_extract_value_timestamp(timestamp, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_timestamp(timestamp, timestamp, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_timestamp(timestamp, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS timestamp_ops
+DEFAULT FOR TYPE timestamp USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       timestamp_cmp(timestamp,timestamp),
+    FUNCTION        2       gin_extract_value_timestamp(timestamp, internal),
+    FUNCTION        3       gin_extract_query_timestamp(timestamp, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_timestamp(timestamp,timestamp,int2, internal),
+STORAGE         timestamp;
+
+CREATE FUNCTION gin_extract_value_timestamptz(timestamptz, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_timestamptz(timestamptz, timestamptz, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_timestamptz(timestamptz, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS timestamptz_ops
+DEFAULT FOR TYPE timestamptz USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       timestamptz_cmp(timestamptz,timestamptz),
+    FUNCTION        2       gin_extract_value_timestamptz(timestamptz, internal),
+    FUNCTION        3       gin_extract_query_timestamptz(timestamptz, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_timestamptz(timestamptz,timestamptz,int2, internal),
+STORAGE         timestamptz;
+
+CREATE FUNCTION gin_extract_value_time(time, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_time(time, time, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_time(time, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS time_ops
+DEFAULT FOR TYPE time USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       time_cmp(time,time),
+    FUNCTION        2       gin_extract_value_time(time, internal),
+    FUNCTION        3       gin_extract_query_time(time, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_time(time,time,int2, internal),
+STORAGE         time;
+
+CREATE FUNCTION gin_extract_value_timetz(timetz, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_timetz(timetz, timetz, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_timetz(timetz, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS timetz_ops
+DEFAULT FOR TYPE timetz USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       timetz_cmp(timetz,timetz),
+    FUNCTION        2       gin_extract_value_timetz(timetz, internal),
+    FUNCTION        3       gin_extract_query_timetz(timetz, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_timetz(timetz,timetz,int2, internal),
+STORAGE         timetz;
+
+CREATE FUNCTION gin_extract_value_date(date, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_date(date, date, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_date(date, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS date_ops
+DEFAULT FOR TYPE date USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       date_cmp(date,date),
+    FUNCTION        2       gin_extract_value_date(date, internal),
+    FUNCTION        3       gin_extract_query_date(date, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_date(date,date,int2, internal),
+STORAGE         date;
+
+CREATE FUNCTION gin_extract_value_interval(interval, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_interval(interval, interval, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_interval(interval, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS interval_ops
+DEFAULT FOR TYPE interval USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       interval_cmp(interval,interval),
+    FUNCTION        2       gin_extract_value_interval(interval, internal),
+    FUNCTION        3       gin_extract_query_interval(interval, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_interval(interval,interval,int2, internal),
+STORAGE         interval;
+
+CREATE FUNCTION gin_extract_value_macaddr(macaddr, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_macaddr(macaddr, macaddr, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_macaddr(macaddr, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS macaddr_ops
+DEFAULT FOR TYPE macaddr USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       macaddr_cmp(macaddr,macaddr),
+    FUNCTION        2       gin_extract_value_macaddr(macaddr, internal),
+    FUNCTION        3       gin_extract_query_macaddr(macaddr, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_macaddr(macaddr,macaddr,int2, internal),
+STORAGE         macaddr;
+
+CREATE FUNCTION gin_extract_value_inet(inet, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_inet(inet, inet, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_inet(inet, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS inet_ops
+DEFAULT FOR TYPE inet USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       network_cmp(inet,inet),
+    FUNCTION        2       gin_extract_value_inet(inet, internal),
+    FUNCTION        3       gin_extract_query_inet(inet, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_inet(inet,inet,int2, internal),
+STORAGE         inet;
+
+CREATE FUNCTION gin_extract_value_cidr(cidr, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_cidr(cidr, cidr, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_cidr(cidr, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS cidr_ops
+DEFAULT FOR TYPE cidr USING gin
+AS
+    OPERATOR        1       <(inet,inet),
+    OPERATOR        2       <=(inet,inet),
+    OPERATOR        3       =(inet,inet),
+    OPERATOR        4       >=(inet,inet),
+    OPERATOR        5       >(inet,inet),
+    FUNCTION        1       network_cmp(inet,inet),
+    FUNCTION        2       gin_extract_value_cidr(cidr, internal),
+    FUNCTION        3       gin_extract_query_cidr(cidr, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_cidr(cidr,cidr,int2, internal),
+STORAGE         cidr;
+
+CREATE FUNCTION gin_extract_value_text(text, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_text(text, text, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_text(text, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS text_ops
+DEFAULT FOR TYPE text USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       bttextcmp(text,text),
+    FUNCTION        2       gin_extract_value_text(text, internal),
+    FUNCTION        3       gin_extract_query_text(text, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_text(text,text,int2, internal),
+STORAGE         text;
+
+CREATE OPERATOR CLASS varchar_ops
+DEFAULT FOR TYPE varchar USING gin
+AS
+    OPERATOR        1       <(text,text),
+    OPERATOR        2       <=(text,text),
+    OPERATOR        3       =(text,text),
+    OPERATOR        4       >=(text,text),
+    OPERATOR        5       >(text,text),
+    FUNCTION        1       bttextcmp(text,text),
+    FUNCTION        2       gin_extract_value_text(text, internal),
+    FUNCTION        3       gin_extract_query_text(text, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_text(text,text,int2, internal),
+STORAGE         varchar;
+
+CREATE FUNCTION gin_extract_value_char("char", internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_char("char", "char", int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_char("char", internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS char_ops
+DEFAULT FOR TYPE "char" USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       btcharcmp("char","char"),
+    FUNCTION        2       gin_extract_value_char("char", internal),
+    FUNCTION        3       gin_extract_query_char("char", internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_char("char","char",int2, internal),
+STORAGE         "char";
+
+CREATE FUNCTION gin_extract_value_bytea(bytea, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_bytea(bytea, bytea, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_bytea(bytea, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS bytea_ops
+DEFAULT FOR TYPE bytea USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       byteacmp(bytea,bytea),
+    FUNCTION        2       gin_extract_value_bytea(bytea, internal),
+    FUNCTION        3       gin_extract_query_bytea(bytea, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_bytea(bytea,bytea,int2, internal),
+STORAGE         bytea;
+
+CREATE FUNCTION gin_extract_value_bit(bit, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_bit(bit, bit, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_bit(bit, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS bit_ops
+DEFAULT FOR TYPE bit USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       bitcmp(bit,bit),
+    FUNCTION        2       gin_extract_value_bit(bit, internal),
+    FUNCTION        3       gin_extract_query_bit(bit, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_bit(bit,bit,int2, internal),
+STORAGE         bit;
+
+CREATE FUNCTION gin_extract_value_varbit(varbit, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_varbit(varbit, varbit, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_varbit(varbit, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS varbit_ops
+DEFAULT FOR TYPE varbit USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       varbitcmp(varbit,varbit),
+    FUNCTION        2       gin_extract_value_varbit(varbit, internal),
+    FUNCTION        3       gin_extract_query_varbit(varbit, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_varbit(varbit,varbit,int2, internal),
+STORAGE         varbit;
+
+CREATE FUNCTION gin_extract_value_numeric(numeric, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_numeric(numeric, numeric, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_numeric(numeric, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_numeric_cmp(numeric, numeric)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS numeric_ops
+DEFAULT FOR TYPE numeric USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       gin_numeric_cmp(numeric,numeric),
+    FUNCTION        2       gin_extract_value_numeric(numeric, internal),
+    FUNCTION        3       gin_extract_query_numeric(numeric, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_numeric(numeric,numeric,int2, internal),
+STORAGE         numeric;
diff --git a/contrib/btree_gin/btree_gin--1.1--1.2.sql b/contrib/btree_gin/btree_gin--1.1--1.2.sql
new file mode 100644
index 0000000..2a16837
--- /dev/null
+++ b/contrib/btree_gin/btree_gin--1.1--1.2.sql
@@ -0,0 +1,47 @@
+/* contrib/btree_gin/btree_gin--1.1--1.2.sql */
+
+-- complain if script is sourced in psql, rather than via CREATE EXTENSION
+\echo Use "ALTER EXTENSION btree_gin UPDATE TO '1.1'" to load this file. \quit
+
+--
+--
+--
+-- enum ops
+--
+--
+
+
+CREATE FUNCTION gin_extract_value_anyenum(anyenum, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_anyenum(anyenum, anyenum, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_anyenum(anyenum, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_enum_cmp(anyenum, anyenum)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS enum_ops
+DEFAULT FOR TYPE anyenum USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       gin_enum_cmp(anyenum,anyenum),
+    FUNCTION        2       gin_extract_value_anyenum(anyenum, internal),
+    FUNCTION        3       gin_extract_query_anyenum(anyenum, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_anyenum(anyenum,anyenum,int2, internal),
+STORAGE         anyenum;
diff --git a/contrib/btree_gin/btree_gin--1.2--1.3.sql b/contrib/btree_gin/btree_gin--1.2--1.3.sql
new file mode 100644
index 0000000..db675b7
--- /dev/null
+++ b/contrib/btree_gin/btree_gin--1.2--1.3.sql
@@ -0,0 +1,128 @@
+/* contrib/btree_gin/btree_gin--1.2--1.3.sql */
+
+-- complain if script is sourced in psql, rather than via CREATE EXTENSION
+\echo Use "ALTER EXTENSION btree_gin UPDATE TO '1.3'" to load this file. \quit
+
+-- uuid datatype support new in 1.3.
+CREATE FUNCTION gin_extract_value_uuid(uuid, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_uuid(uuid, uuid, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_uuid(uuid, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS uuid_ops
+DEFAULT FOR TYPE uuid USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       uuid_cmp(uuid,uuid),
+    FUNCTION        2       gin_extract_value_uuid(uuid, internal),
+    FUNCTION        3       gin_extract_query_uuid(uuid, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_uuid(uuid,uuid,int2, internal),
+STORAGE         uuid;
+
+-- name datatype support new in 1.3.
+CREATE FUNCTION gin_extract_value_name(name, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_name(name, name, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_name(name, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS name_ops
+DEFAULT FOR TYPE name USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       btnamecmp(name,name),
+    FUNCTION        2       gin_extract_value_name(name, internal),
+    FUNCTION        3       gin_extract_query_name(name, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_name(name,name,int2, internal),
+STORAGE         name;
+
+-- bool datatype support new in 1.3.
+CREATE FUNCTION gin_extract_value_bool(bool, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_bool(bool, bool, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_bool(bool, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS bool_ops
+DEFAULT FOR TYPE bool USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       btboolcmp(bool,bool),
+    FUNCTION        2       gin_extract_value_bool(bool, internal),
+    FUNCTION        3       gin_extract_query_bool(bool, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_bool(bool,bool,int2, internal),
+STORAGE         bool;
+
+-- bpchar datatype support new in 1.3.
+CREATE FUNCTION gin_extract_value_bpchar(bpchar, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_compare_prefix_bpchar(bpchar, bpchar, int2, internal)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE FUNCTION gin_extract_query_bpchar(bpchar, internal, int2, internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE;
+
+CREATE OPERATOR CLASS bpchar_ops
+DEFAULT FOR TYPE bpchar USING gin
+AS
+    OPERATOR        1       <,
+    OPERATOR        2       <=,
+    OPERATOR        3       =,
+    OPERATOR        4       >=,
+    OPERATOR        5       >,
+    FUNCTION        1       bpcharcmp(bpchar, bpchar),
+    FUNCTION        2       gin_extract_value_bpchar(bpchar, internal),
+    FUNCTION        3       gin_extract_query_bpchar(bpchar, internal, int2, internal, internal),
+    FUNCTION        4       gin_btree_consistent(internal, int2, anyelement, int4, internal, internal),
+    FUNCTION        5       gin_compare_prefix_bpchar(bpchar,bpchar,int2, internal),
+STORAGE         bpchar;
diff --git a/contrib/btree_gin/btree_gin.c b/contrib/btree_gin/btree_gin.c
new file mode 100644
index 0000000..c50d68c
--- /dev/null
+++ b/contrib/btree_gin/btree_gin.c
@@ -0,0 +1,513 @@
+/*
+ * contrib/btree_gin/btree_gin.c
+ */
+#include "postgres.h"
+
+#include <limits.h>
+
+#include "access/stratnum.h"
+#include "utils/builtins.h"
+#include "utils/bytea.h"
+#include "utils/cash.h"
+#include "utils/date.h"
+#include "utils/float.h"
+#include "utils/inet.h"
+#include "utils/numeric.h"
+#include "utils/timestamp.h"
+#include "utils/uuid.h"
+#include "utils/varbit.h"
+
+PG_MODULE_MAGIC;
+
+typedef struct QueryInfo
+{
+	StrategyNumber strategy;
+	Datum		datum;
+	bool		is_varlena;
+	Datum		(*typecmp) (FunctionCallInfo);
+} QueryInfo;
+
+/*** GIN support functions shared by all datatypes ***/
+
+static Datum
+gin_btree_extract_value(FunctionCallInfo fcinfo, bool is_varlena)
+{
+	Datum		datum = PG_GETARG_DATUM(0);
+	int32	   *nentries = (int32 *) PG_GETARG_POINTER(1);
+	Datum	   *entries = (Datum *) palloc(sizeof(Datum));
+
+	if (is_varlena)
+		datum = PointerGetDatum(PG_DETOAST_DATUM(datum));
+	entries[0] = datum;
+	*nentries = 1;
+
+	PG_RETURN_POINTER(entries);
+}
+
+/*
+ * For BTGreaterEqualStrategyNumber, BTGreaterStrategyNumber, and
+ * BTEqualStrategyNumber we want to start the index scan at the
+ * supplied query datum, and work forward. For BTLessStrategyNumber
+ * and BTLessEqualStrategyNumber, we need to start at the leftmost
+ * key, and work forward until the supplied query datum (which must be
+ * sent along inside the QueryInfo structure).
+ */
+static Datum
+gin_btree_extract_query(FunctionCallInfo fcinfo,
+						bool is_varlena,
+						Datum (*leftmostvalue) (void),
+						Datum (*typecmp) (FunctionCallInfo))
+{
+	Datum		datum = PG_GETARG_DATUM(0);
+	int32	   *nentries = (int32 *) PG_GETARG_POINTER(1);
+	StrategyNumber strategy = PG_GETARG_UINT16(2);
+	bool	  **partialmatch = (bool **) PG_GETARG_POINTER(3);
+	Pointer   **extra_data = (Pointer **) PG_GETARG_POINTER(4);
+	Datum	   *entries = (Datum *) palloc(sizeof(Datum));
+	QueryInfo  *data = (QueryInfo *) palloc(sizeof(QueryInfo));
+	bool	   *ptr_partialmatch;
+
+	*nentries = 1;
+	ptr_partialmatch = *partialmatch = (bool *) palloc(sizeof(bool));
+	*ptr_partialmatch = false;
+	if (is_varlena)
+		datum = PointerGetDatum(PG_DETOAST_DATUM(datum));
+	data->strategy = strategy;
+	data->datum = datum;
+	data->is_varlena = is_varlena;
+	data->typecmp = typecmp;
+	*extra_data = (Pointer *) palloc(sizeof(Pointer));
+	**extra_data = (Pointer) data;
+
+	switch (strategy)
+	{
+		case BTLessStrategyNumber:
+		case BTLessEqualStrategyNumber:
+			entries[0] = leftmostvalue();
+			*ptr_partialmatch = true;
+			break;
+		case BTGreaterEqualStrategyNumber:
+		case BTGreaterStrategyNumber:
+			*ptr_partialmatch = true;
+			/* FALLTHROUGH */
+		case BTEqualStrategyNumber:
+			entries[0] = datum;
+			break;
+		default:
+			elog(ERROR, "unrecognized strategy number: %d", strategy);
+	}
+
+	PG_RETURN_POINTER(entries);
+}
+
+/*
+ * Datum a is a value from extract_query method and for BTLess*
+ * strategy it is a left-most value.  So, use original datum from QueryInfo
+ * to decide to stop scanning or not.  Datum b is always from index.
+ */
+static Datum
+gin_btree_compare_prefix(FunctionCallInfo fcinfo)
+{
+	Datum		a = PG_GETARG_DATUM(0);
+	Datum		b = PG_GETARG_DATUM(1);
+	QueryInfo  *data = (QueryInfo *) PG_GETARG_POINTER(3);
+	int32		res,
+				cmp;
+
+	cmp = DatumGetInt32(CallerFInfoFunctionCall2(data->typecmp,
+												 fcinfo->flinfo,
+												 PG_GET_COLLATION(),
+												 (data->strategy == BTLessStrategyNumber ||
+												  data->strategy == BTLessEqualStrategyNumber)
+												 ? data->datum : a,
+												 b));
+
+	switch (data->strategy)
+	{
+		case BTLessStrategyNumber:
+			/* If original datum > indexed one then return match */
+			if (cmp > 0)
+				res = 0;
+			else
+				res = 1;
+			break;
+		case BTLessEqualStrategyNumber:
+			/* The same except equality */
+			if (cmp >= 0)
+				res = 0;
+			else
+				res = 1;
+			break;
+		case BTEqualStrategyNumber:
+			if (cmp != 0)
+				res = 1;
+			else
+				res = 0;
+			break;
+		case BTGreaterEqualStrategyNumber:
+			/* If original datum <= indexed one then return match */
+			if (cmp <= 0)
+				res = 0;
+			else
+				res = 1;
+			break;
+		case BTGreaterStrategyNumber:
+			/* If original datum <= indexed one then return match */
+			/* If original datum == indexed one then continue scan */
+			if (cmp < 0)
+				res = 0;
+			else if (cmp == 0)
+				res = -1;
+			else
+				res = 1;
+			break;
+		default:
+			elog(ERROR, "unrecognized strategy number: %d",
+				 data->strategy);
+			res = 0;
+	}
+
+	PG_RETURN_INT32(res);
+}
+
+PG_FUNCTION_INFO_V1(gin_btree_consistent);
+Datum
+gin_btree_consistent(PG_FUNCTION_ARGS)
+{
+	bool	   *recheck = (bool *) PG_GETARG_POINTER(5);
+
+	*recheck = false;
+	PG_RETURN_BOOL(true);
+}
+
+/*** GIN_SUPPORT macro defines the datatype specific functions ***/
+
+#define GIN_SUPPORT(type, is_varlena, leftmostvalue, typecmp)				\
+PG_FUNCTION_INFO_V1(gin_extract_value_##type);								\
+Datum																		\
+gin_extract_value_##type(PG_FUNCTION_ARGS)									\
+{																			\
+	return gin_btree_extract_value(fcinfo, is_varlena);						\
+}	\
+PG_FUNCTION_INFO_V1(gin_extract_query_##type);								\
+Datum																		\
+gin_extract_query_##type(PG_FUNCTION_ARGS)									\
+{																			\
+	return gin_btree_extract_query(fcinfo,									\
+								   is_varlena, leftmostvalue, typecmp);		\
+}	\
+PG_FUNCTION_INFO_V1(gin_compare_prefix_##type);								\
+Datum																		\
+gin_compare_prefix_##type(PG_FUNCTION_ARGS)									\
+{																			\
+	return gin_btree_compare_prefix(fcinfo);								\
+}
+
+
+/*** Datatype specifications ***/
+
+static Datum
+leftmostvalue_int2(void)
+{
+	return Int16GetDatum(SHRT_MIN);
+}
+
+GIN_SUPPORT(int2, false, leftmostvalue_int2, btint2cmp)
+
+static Datum
+leftmostvalue_int4(void)
+{
+	return Int32GetDatum(INT_MIN);
+}
+
+GIN_SUPPORT(int4, false, leftmostvalue_int4, btint4cmp)
+
+static Datum
+leftmostvalue_int8(void)
+{
+	return Int64GetDatum(PG_INT64_MIN);
+}
+
+GIN_SUPPORT(int8, false, leftmostvalue_int8, btint8cmp)
+
+static Datum
+leftmostvalue_float4(void)
+{
+	return Float4GetDatum(-get_float4_infinity());
+}
+
+GIN_SUPPORT(float4, false, leftmostvalue_float4, btfloat4cmp)
+
+static Datum
+leftmostvalue_float8(void)
+{
+	return Float8GetDatum(-get_float8_infinity());
+}
+
+GIN_SUPPORT(float8, false, leftmostvalue_float8, btfloat8cmp)
+
+static Datum
+leftmostvalue_money(void)
+{
+	return Int64GetDatum(PG_INT64_MIN);
+}
+
+GIN_SUPPORT(money, false, leftmostvalue_money, cash_cmp)
+
+static Datum
+leftmostvalue_oid(void)
+{
+	return ObjectIdGetDatum(0);
+}
+
+GIN_SUPPORT(oid, false, leftmostvalue_oid, btoidcmp)
+
+static Datum
+leftmostvalue_timestamp(void)
+{
+	return TimestampGetDatum(DT_NOBEGIN);
+}
+
+GIN_SUPPORT(timestamp, false, leftmostvalue_timestamp, timestamp_cmp)
+
+GIN_SUPPORT(timestamptz, false, leftmostvalue_timestamp, timestamp_cmp)
+
+static Datum
+leftmostvalue_time(void)
+{
+	return TimeADTGetDatum(0);
+}
+
+GIN_SUPPORT(time, false, leftmostvalue_time, time_cmp)
+
+static Datum
+leftmostvalue_timetz(void)
+{
+	TimeTzADT  *v = palloc(sizeof(TimeTzADT));
+
+	v->time = 0;
+	v->zone = -24 * 3600;		/* XXX is that true? */
+
+	return TimeTzADTPGetDatum(v);
+}
+
+GIN_SUPPORT(timetz, false, leftmostvalue_timetz, timetz_cmp)
+
+static Datum
+leftmostvalue_date(void)
+{
+	return DateADTGetDatum(DATEVAL_NOBEGIN);
+}
+
+GIN_SUPPORT(date, false, leftmostvalue_date, date_cmp)
+
+static Datum
+leftmostvalue_interval(void)
+{
+	Interval   *v = palloc(sizeof(Interval));
+
+	v->time = DT_NOBEGIN;
+	v->day = 0;
+	v->month = 0;
+	return IntervalPGetDatum(v);
+}
+
+GIN_SUPPORT(interval, false, leftmostvalue_interval, interval_cmp)
+
+static Datum
+leftmostvalue_macaddr(void)
+{
+	macaddr    *v = palloc0(sizeof(macaddr));
+
+	return MacaddrPGetDatum(v);
+}
+
+GIN_SUPPORT(macaddr, false, leftmostvalue_macaddr, macaddr_cmp)
+
+static Datum
+leftmostvalue_macaddr8(void)
+{
+	macaddr8   *v = palloc0(sizeof(macaddr8));
+
+	return Macaddr8PGetDatum(v);
+}
+
+GIN_SUPPORT(macaddr8, false, leftmostvalue_macaddr8, macaddr8_cmp)
+
+static Datum
+leftmostvalue_inet(void)
+{
+	return DirectFunctionCall1(inet_in, CStringGetDatum("0.0.0.0/0"));
+}
+
+GIN_SUPPORT(inet, true, leftmostvalue_inet, network_cmp)
+
+GIN_SUPPORT(cidr, true, leftmostvalue_inet, network_cmp)
+
+static Datum
+leftmostvalue_text(void)
+{
+	return PointerGetDatum(cstring_to_text_with_len("", 0));
+}
+
+GIN_SUPPORT(text, true, leftmostvalue_text, bttextcmp)
+
+GIN_SUPPORT(bpchar, true, leftmostvalue_text, bpcharcmp)
+
+static Datum
+leftmostvalue_char(void)
+{
+	return CharGetDatum(0);
+}
+
+GIN_SUPPORT(char, false, leftmostvalue_char, btcharcmp)
+
+GIN_SUPPORT(bytea, true, leftmostvalue_text, byteacmp)
+
+static Datum
+leftmostvalue_bit(void)
+{
+	return DirectFunctionCall3(bit_in,
+							   CStringGetDatum(""),
+							   ObjectIdGetDatum(0),
+							   Int32GetDatum(-1));
+}
+
+GIN_SUPPORT(bit, true, leftmostvalue_bit, bitcmp)
+
+static Datum
+leftmostvalue_varbit(void)
+{
+	return DirectFunctionCall3(varbit_in,
+							   CStringGetDatum(""),
+							   ObjectIdGetDatum(0),
+							   Int32GetDatum(-1));
+}
+
+GIN_SUPPORT(varbit, true, leftmostvalue_varbit, bitcmp)
+
+/*
+ * Numeric type hasn't a real left-most value, so we use PointerGetDatum(NULL)
+ * (*not* a SQL NULL) to represent that.  We can get away with that because
+ * the value returned by our leftmostvalue function will never be stored in
+ * the index nor passed to anything except our compare and prefix-comparison
+ * functions.  The same trick could be used for other pass-by-reference types.
+ */
+
+#define NUMERIC_IS_LEFTMOST(x)	((x) == NULL)
+
+PG_FUNCTION_INFO_V1(gin_numeric_cmp);
+
+Datum
+gin_numeric_cmp(PG_FUNCTION_ARGS)
+{
+	Numeric		a = (Numeric) PG_GETARG_POINTER(0);
+	Numeric		b = (Numeric) PG_GETARG_POINTER(1);
+	int			res = 0;
+
+	if (NUMERIC_IS_LEFTMOST(a))
+	{
+		res = (NUMERIC_IS_LEFTMOST(b)) ? 0 : -1;
+	}
+	else if (NUMERIC_IS_LEFTMOST(b))
+	{
+		res = 1;
+	}
+	else
+	{
+		res = DatumGetInt32(DirectFunctionCall2(numeric_cmp,
+												NumericGetDatum(a),
+												NumericGetDatum(b)));
+	}
+
+	PG_RETURN_INT32(res);
+}
+
+static Datum
+leftmostvalue_numeric(void)
+{
+	return PointerGetDatum(NULL);
+}
+
+GIN_SUPPORT(numeric, true, leftmostvalue_numeric, gin_numeric_cmp)
+
+/*
+ * Use a similar trick to that used for numeric for enums, since we don't
+ * actually know the leftmost value of any enum without knowing the concrete
+ * type, so we use a dummy leftmost value of InvalidOid.
+ *
+ * Note that we use CallerFInfoFunctionCall2 here so that enum_cmp
+ * gets a valid fn_extra to work with. Unlike most other type comparison
+ * routines it needs it, so we can't use DirectFunctionCall2.
+ */
+
+#define ENUM_IS_LEFTMOST(x) ((x) == InvalidOid)
+
+PG_FUNCTION_INFO_V1(gin_enum_cmp);
+
+Datum
+gin_enum_cmp(PG_FUNCTION_ARGS)
+{
+	Oid			a = PG_GETARG_OID(0);
+	Oid			b = PG_GETARG_OID(1);
+	int			res = 0;
+
+	if (ENUM_IS_LEFTMOST(a))
+	{
+		res = (ENUM_IS_LEFTMOST(b)) ? 0 : -1;
+	}
+	else if (ENUM_IS_LEFTMOST(b))
+	{
+		res = 1;
+	}
+	else
+	{
+		res = DatumGetInt32(CallerFInfoFunctionCall2(enum_cmp,
+													 fcinfo->flinfo,
+													 PG_GET_COLLATION(),
+													 ObjectIdGetDatum(a),
+													 ObjectIdGetDatum(b)));
+	}
+
+	PG_RETURN_INT32(res);
+}
+
+static Datum
+leftmostvalue_enum(void)
+{
+	return ObjectIdGetDatum(InvalidOid);
+}
+
+GIN_SUPPORT(anyenum, false, leftmostvalue_enum, gin_enum_cmp)
+
+static Datum
+leftmostvalue_uuid(void)
+{
+	/*
+	 * palloc0 will create the UUID with all zeroes:
+	 * "00000000-0000-0000-0000-000000000000"
+	 */
+	pg_uuid_t  *retval = (pg_uuid_t *) palloc0(sizeof(pg_uuid_t));
+
+	return UUIDPGetDatum(retval);
+}
+
+GIN_SUPPORT(uuid, false, leftmostvalue_uuid, uuid_cmp)
+
+static Datum
+leftmostvalue_name(void)
+{
+	NameData   *result = (NameData *) palloc0(NAMEDATALEN);
+
+	return NameGetDatum(result);
+}
+
+GIN_SUPPORT(name, false, leftmostvalue_name, btnamecmp)
+
+static Datum
+leftmostvalue_bool(void)
+{
+	return BoolGetDatum(false);
+}
+
+GIN_SUPPORT(bool, false, leftmostvalue_bool, btboolcmp)
diff --git a/contrib/btree_gin/btree_gin.control b/contrib/btree_gin/btree_gin.control
new file mode 100644
index 0000000..67d0c99
--- /dev/null
+++ b/contrib/btree_gin/btree_gin.control
@@ -0,0 +1,6 @@
+# btree_gin extension
+comment = 'support for indexing common datatypes in GIN'
+default_version = '1.3'
+module_pathname = '$libdir/btree_gin'
+relocatable = true
+trusted = true
diff --git a/contrib/btree_gin/expected/bit.out b/contrib/btree_gin/expected/bit.out
new file mode 100644
index 0000000..3c00a20
--- /dev/null
+++ b/contrib/btree_gin/expected/bit.out
@@ -0,0 +1,44 @@
+set enable_seqscan=off;
+CREATE TABLE test_bit (
+	i bit(3)
+);
+INSERT INTO test_bit VALUES ('001'),('010'),('011'),('100'),('101'),('110');
+CREATE INDEX idx_bit ON test_bit USING gin (i);
+SELECT * FROM test_bit WHERE i<'100'::bit(3) ORDER BY i;
+  i  
+-----
+ 001
+ 010
+ 011
+(3 rows)
+
+SELECT * FROM test_bit WHERE i<='100'::bit(3) ORDER BY i;
+  i  
+-----
+ 001
+ 010
+ 011
+ 100
+(4 rows)
+
+SELECT * FROM test_bit WHERE i='100'::bit(3) ORDER BY i;
+  i  
+-----
+ 100
+(1 row)
+
+SELECT * FROM test_bit WHERE i>='100'::bit(3) ORDER BY i;
+  i  
+-----
+ 100
+ 101
+ 110
+(3 rows)
+
+SELECT * FROM test_bit WHERE i>'100'::bit(3) ORDER BY i;
+  i  
+-----
+ 101
+ 110
+(2 rows)
+
diff --git a/contrib/btree_gin/expected/bool.out b/contrib/btree_gin/expected/bool.out
new file mode 100644
index 0000000..efb3e1e
--- /dev/null
+++ b/contrib/btree_gin/expected/bool.out
@@ -0,0 +1,119 @@
+set enable_seqscan=off;
+CREATE TABLE test_bool (
+	i boolean
+);
+INSERT INTO test_bool VALUES (false),(true),(null);
+CREATE INDEX idx_bool ON test_bool USING gin (i);
+SELECT * FROM test_bool WHERE i<true ORDER BY i;
+ i 
+---
+ f
+(1 row)
+
+SELECT * FROM test_bool WHERE i<=true ORDER BY i;
+ i 
+---
+ f
+ t
+(2 rows)
+
+SELECT * FROM test_bool WHERE i=true ORDER BY i;
+ i 
+---
+ t
+(1 row)
+
+SELECT * FROM test_bool WHERE i>=true ORDER BY i;
+ i 
+---
+ t
+(1 row)
+
+SELECT * FROM test_bool WHERE i>true ORDER BY i;
+ i 
+---
+(0 rows)
+
+SELECT * FROM test_bool WHERE i<false ORDER BY i;
+ i 
+---
+(0 rows)
+
+SELECT * FROM test_bool WHERE i<=false ORDER BY i;
+ i 
+---
+ f
+(1 row)
+
+SELECT * FROM test_bool WHERE i=false ORDER BY i;
+ i 
+---
+ f
+(1 row)
+
+SELECT * FROM test_bool WHERE i>=false ORDER BY i;
+ i 
+---
+ f
+ t
+(2 rows)
+
+SELECT * FROM test_bool WHERE i>false ORDER BY i;
+ i 
+---
+ t
+(1 row)
+
+EXPLAIN (COSTS OFF) SELECT * FROM test_bool WHERE i<true ORDER BY i;
+                QUERY PLAN                 
+-------------------------------------------
+ Sort
+   Sort Key: i
+   ->  Bitmap Heap Scan on test_bool
+         Recheck Cond: (i < true)
+         ->  Bitmap Index Scan on idx_bool
+               Index Cond: (i < true)
+(6 rows)
+
+EXPLAIN (COSTS OFF) SELECT * FROM test_bool WHERE i<=true ORDER BY i;
+                QUERY PLAN                 
+-------------------------------------------
+ Sort
+   Sort Key: i
+   ->  Bitmap Heap Scan on test_bool
+         Recheck Cond: (i <= true)
+         ->  Bitmap Index Scan on idx_bool
+               Index Cond: (i <= true)
+(6 rows)
+
+EXPLAIN (COSTS OFF) SELECT * FROM test_bool WHERE i=true ORDER BY i;
+         QUERY PLAN          
+-----------------------------
+ Sort
+   Sort Key: i
+   ->  Seq Scan on test_bool
+         Filter: i
+(4 rows)
+
+EXPLAIN (COSTS OFF) SELECT * FROM test_bool WHERE i>=true ORDER BY i;
+                QUERY PLAN                 
+-------------------------------------------
+ Sort
+   Sort Key: i
+   ->  Bitmap Heap Scan on test_bool
+         Recheck Cond: (i >= true)
+         ->  Bitmap Index Scan on idx_bool
+               Index Cond: (i >= true)
+(6 rows)
+
+EXPLAIN (COSTS OFF) SELECT * FROM test_bool WHERE i>true ORDER BY i;
+                QUERY PLAN                 
+-------------------------------------------
+ Sort
+   Sort Key: i
+   ->  Bitmap Heap Scan on test_bool
+         Recheck Cond: (i > true)
+         ->  Bitmap Index Scan on idx_bool
+               Index Cond: (i > true)
+(6 rows)
+
diff --git a/contrib/btree_gin/expected/bpchar.out b/contrib/btree_gin/expected/bpchar.out
new file mode 100644
index 0000000..2eb8855
--- /dev/null
+++ b/contrib/btree_gin/expected/bpchar.out
@@ -0,0 +1,109 @@
+set enable_seqscan=off;
+CREATE TABLE test_bpchar (
+	i char(10)
+);
+INSERT INTO test_bpchar VALUES ('a'),('ab'),('abc'),('abc   '),('abb'),('axy'),('xyz'),('xyz  ');
+CREATE INDEX idx_bpchar ON test_bpchar USING gin (i);
+SELECT * FROM test_bpchar WHERE i<'abc' ORDER BY i;
+     i      
+------------
+ a         
+ ab        
+ abb       
+(3 rows)
+
+SELECT * FROM test_bpchar WHERE i<='abc' ORDER BY i;
+     i      
+------------
+ a         
+ ab        
+ abb       
+ abc       
+ abc       
+(5 rows)
+
+SELECT * FROM test_bpchar WHERE i='abc' ORDER BY i;
+     i      
+------------
+ abc       
+ abc       
+(2 rows)
+
+SELECT * FROM test_bpchar WHERE i='abc  ' ORDER BY i;
+     i      
+------------
+ abc       
+ abc       
+(2 rows)
+
+SELECT * FROM test_bpchar WHERE i>='abc' ORDER BY i;
+     i      
+------------
+ abc       
+ abc       
+ axy       
+ xyz       
+ xyz       
+(5 rows)
+
+SELECT * FROM test_bpchar WHERE i>'abc' ORDER BY i;
+     i      
+------------
+ axy       
+ xyz       
+ xyz       
+(3 rows)
+
+EXPLAIN (COSTS OFF) SELECT * FROM test_bpchar WHERE i<'abc' ORDER BY i;
+                  QUERY PLAN                   
+-----------------------------------------------
+ Sort
+   Sort Key: i
+   ->  Bitmap Heap Scan on test_bpchar
+         Recheck Cond: (i < 'abc'::bpchar)
+         ->  Bitmap Index Scan on idx_bpchar
+               Index Cond: (i < 'abc'::bpchar)
+(6 rows)
+
+EXPLAIN (COSTS OFF) SELECT * FROM test_bpchar WHERE i<='abc' ORDER BY i;
+                   QUERY PLAN                   
+------------------------------------------------
+ Sort
+   Sort Key: i
+   ->  Bitmap Heap Scan on test_bpchar
+         Recheck Cond: (i <= 'abc'::bpchar)
+         ->  Bitmap Index Scan on idx_bpchar
+               Index Cond: (i <= 'abc'::bpchar)
+(6 rows)
+
+EXPLAIN (COSTS OFF) SELECT * FROM test_bpchar WHERE i='abc' ORDER BY i;
+               QUERY PLAN                
+-----------------------------------------
+ Bitmap Heap Scan on test_bpchar
+   Recheck Cond: (i = 'abc'::bpchar)
+   ->  Bitmap Index Scan on idx_bpchar
+         Index Cond: (i = 'abc'::bpchar)
+(4 rows)
+
+EXPLAIN (COSTS OFF) SELECT * FROM test_bpchar WHERE i>='abc' ORDER BY i;
+                   QUERY PLAN                   
+------------------------------------------------
+ Sort
+   Sort Key: i
+   ->  Bitmap Heap Scan on test_bpchar
+         Recheck Cond: (i >= 'abc'::bpchar)
+         ->  Bitmap Index Scan on idx_bpchar
+               Index Cond: (i >= 'abc'::bpchar)
+(6 rows)
+
+EXPLAIN (COSTS OFF) SELECT * FROM test_bpchar WHERE i>'abc' ORDER BY i;
+                  QUERY PLAN                   
+-----------------------------------------------
+ Sort
+   Sort Key: i
+   ->  Bitmap Heap Scan on test_bpchar
+         Recheck Cond: (i > 'abc'::bpchar)
+         ->  Bitmap Index Scan on idx_bpchar
+               Index Cond: (i > 'abc'::bpchar)
+(6 rows)
+
diff --git a/contrib/btree_gin/expected/bytea.out b/contrib/btree_gin/expected/bytea.out
new file mode 100644
index 0000000..b0ed7a5
--- /dev/null
+++ b/contrib/btree_gin/expected/bytea.out
@@ -0,0 +1,46 @@
+set enable_seqscan=off;
+-- ensure consistent test output regardless of the default bytea format
+SET bytea_output TO escape;
+CREATE TABLE test_bytea (
+	i bytea
+);
+INSERT INTO test_bytea VALUES ('a'),('ab'),('abc'),('abb'),('axy'),('xyz');
+CREATE INDEX idx_bytea ON test_bytea USING gin (i);
+SELECT * FROM test_bytea WHERE i<'abc'::bytea ORDER BY i;
+  i  
+-----
+ a
+ ab
+ abb
+(3 rows)
+
+SELECT * FROM test_bytea WHERE i<='abc'::bytea ORDER BY i;
+  i  
+-----
+ a
+ ab
+ abb
+ abc
+(4 rows)
+
+SELECT * FROM test_bytea WHERE i='abc'::bytea ORDER BY i;
+  i  
+-----
+ abc
+(1 row)
+
+SELECT * FROM test_bytea WHERE i>='abc'::bytea ORDER BY i;
+  i  
+-----
+ abc
+ axy
+ xyz
+(3 rows)
+
+SELECT * FROM test_bytea WHERE i>'abc'::bytea ORDER BY i;
+  i  
+-----
+ axy
+ xyz
+(2 rows)
+
diff --git a/contrib/btree_gin/expected/char.out b/contrib/btree_gin/expected/char.out
new file mode 100644
index 0000000..6563546
--- /dev/null
+++ b/contrib/btree_gin/expected/char.out
@@ -0,0 +1,44 @@
+set enable_seqscan=off;
+CREATE TABLE test_char (
+	i "char"
+);
+INSERT INTO test_char VALUES ('a'),('b'),('c'),('d'),('e'),('f');
+CREATE INDEX idx_char ON test_char USING gin (i);
+SELECT * FROM test_char WHERE i<'d'::"char" ORDER BY i;
+ i 
+---
+ a
+ b
+ c
+(3 rows)
+
+SELECT * FROM test_char WHERE i<='d'::"char" ORDER BY i;
+ i 
+---
+ a
+ b
+ c
+ d
+(4 rows)
+
+SELECT * FROM test_char WHERE i='d'::"char" ORDER BY i;
+ i 
+---
+ d
+(1 row)
+
+SELECT * FROM test_char WHERE i>='d'::"char" ORDER BY i;
+ i 
+---
+ d
+ e
+ f
+(3 rows)
+
+SELECT * FROM test_char WHERE i>'d'::"char" ORDER BY i;
+ i 
+---
+ e
+ f
+(2 rows)
+
diff --git a/contrib/btree_gin/expected/cidr.out b/contrib/btree_gin/expected/cidr.out
new file mode 100644
index 0000000..3d1198a
--- /dev/null
+++ b/contrib/btree_gin/expected/cidr.out
@@ -0,0 +1,51 @@
+set enable_seqscan=off;
+CREATE TABLE test_cidr (
+	i cidr
+);
+INSERT INTO test_cidr VALUES
+	( '1.2.3.4' ),
+	( '1.2.4.4' ),
+	( '1.2.5.4' ),
+	( '1.2.6.4' ),
+	( '1.2.7.4' ),
+	( '1.2.8.4' )
+;
+CREATE INDEX idx_cidr ON test_cidr USING gin (i);
+SELECT * FROM test_cidr WHERE i<'1.2.6.4'::cidr ORDER BY i;
+     i      
+------------
+ 1.2.3.4/32
+ 1.2.4.4/32
+ 1.2.5.4/32
+(3 rows)
+
+SELECT * FROM test_cidr WHERE i<='1.2.6.4'::cidr ORDER BY i;
+     i      
+------------
+ 1.2.3.4/32
+ 1.2.4.4/32
+ 1.2.5.4/32
+ 1.2.6.4/32
+(4 rows)
+
+SELECT * FROM test_cidr WHERE i='1.2.6.4'::cidr ORDER BY i;
+     i      
+------------
+ 1.2.6.4/32
+(1 row)
+
+SELECT * FROM test_cidr WHERE i>='1.2.6.4'::cidr ORDER BY i;
+     i      
+------------
+ 1.2.6.4/32
+ 1.2.7.4/32
+ 1.2.8.4/32
+(3 rows)
+
+SELECT * FROM test_cidr WHERE i>'1.2.6.4'::cidr ORDER BY i;
+     i      
+------------
+ 1.2.7.4/32
+ 1.2.8.4/32
+(2 rows)
+
diff --git a/contrib/btree_gin/expected/date.out b/contrib/btree_gin/expected/date.out
new file mode 100644
index 0000000..40dfa30
--- /dev/null
+++ b/contrib/btree_gin/expected/date.out
@@ -0,0 +1,51 @@
+set enable_seqscan=off;
+CREATE TABLE test_date (
+	i date
+);
+INSERT INTO test_date VALUES
+	( '2004-10-23' ),
+	( '2004-10-24' ),
+	( '2004-10-25' ),
+	( '2004-10-26' ),
+	( '2004-10-27' ),
+	( '2004-10-28' )
+;
+CREATE INDEX idx_date ON test_date USING gin (i);
+SELECT * FROM test_date WHERE i<'2004-10-26'::date ORDER BY i;
+     i      
+------------
+ 10-23-2004
+ 10-24-2004
+ 10-25-2004
+(3 rows)
+
+SELECT * FROM test_date WHERE i<='2004-10-26'::date ORDER BY i;
+     i      
+------------
+ 10-23-2004
+ 10-24-2004
+ 10-25-2004
+ 10-26-2004
+(4 rows)
+
+SELECT * FROM test_date WHERE i='2004-10-26'::date ORDER BY i;
+     i      
+------------
+ 10-26-2004
+(1 row)
+
+SELECT * FROM test_date WHERE i>='2004-10-26'::date ORDER BY i;
+     i      
+------------
+ 10-26-2004
+ 10-27-2004
+ 10-28-2004
+(3 rows)
+
+SELECT * FROM test_date WHERE i>'2004-10-26'::date ORDER BY i;
+     i      
+------------
+ 10-27-2004
+ 10-28-2004
+(2 rows)
+
diff --git a/contrib/btree_gin/expected/enum.out b/contrib/btree_gin/expected/enum.out
new file mode 100644
index 0000000..71e0c4b
--- /dev/null
+++ b/contrib/btree_gin/expected/enum.out
@@ -0,0 +1,63 @@
+set enable_seqscan=off;
+CREATE TYPE rainbow AS ENUM ('r','o','y','g','b','i','v');
+CREATE TABLE test_enum (
+   i rainbow
+);
+INSERT INTO test_enum VALUES ('v'),('y'),('r'),('g'),('o'),('i'),('b');
+CREATE INDEX idx_enum ON test_enum USING gin (i);
+SELECT * FROM test_enum WHERE i<'g'::rainbow ORDER BY i;
+ i 
+---
+ r
+ o
+ y
+(3 rows)
+
+SELECT * FROM test_enum WHERE i<='g'::rainbow ORDER BY i;
+ i 
+---
+ r
+ o
+ y
+ g
+(4 rows)
+
+SELECT * FROM test_enum WHERE i='g'::rainbow ORDER BY i;
+ i 
+---
+ g
+(1 row)
+
+SELECT * FROM test_enum WHERE i>='g'::rainbow ORDER BY i;
+ i 
+---
+ g
+ b
+ i
+ v
+(4 rows)
+
+SELECT * FROM test_enum WHERE i>'g'::rainbow ORDER BY i;
+ i 
+---
+ b
+ i
+ v
+(3 rows)
+
+explain (costs off) SELECT * FROM test_enum WHERE i>='g'::rainbow ORDER BY i;
+                  QUERY PLAN                   
+-----------------------------------------------
+ Sort
+   Sort Key: i
+   ->  Bitmap Heap Scan on test_enum
+         Recheck Cond: (i >= 'g'::rainbow)
+         ->  Bitmap Index Scan on idx_enum
+               Index Cond: (i >= 'g'::rainbow)
+(6 rows)
+
+-- make sure we handle the non-evenly-numbered oid case for enums
+create type e as enum ('0', '2', '3');
+alter type e add value '1' after '0';
+create table t as select (i % 4)::text::e from generate_series(0, 100000) as i;
+create index on t using gin (e);
diff --git a/contrib/btree_gin/expected/float4.out b/contrib/btree_gin/expected/float4.out
new file mode 100644
index 0000000..7b9134f
--- /dev/null
+++ b/contrib/btree_gin/expected/float4.out
@@ -0,0 +1,44 @@
+set enable_seqscan=off;
+CREATE TABLE test_float4 (
+	i float4
+);
+INSERT INTO test_float4 VALUES (-2),(-1),(0),(1),(2),(3);
+CREATE INDEX idx_float4 ON test_float4 USING gin (i);
+SELECT * FROM test_float4 WHERE i<1::float4 ORDER BY i;
+ i  
+----
+ -2
+ -1
+  0
+(3 rows)
+
+SELECT * FROM test_float4 WHERE i<=1::float4 ORDER BY i;
+ i  
+----
+ -2
+ -1
+  0
+  1
+(4 rows)
+
+SELECT * FROM test_float4 WHERE i=1::float4 ORDER BY i;
+ i 
+---
+ 1
+(1 row)
+
+SELECT * FROM test_float4 WHERE i>=1::float4 ORDER BY i;
+ i 
+---
+ 1
+ 2
+ 3
+(3 rows)
+
+SELECT * FROM test_float4 WHERE i>1::float4 ORDER BY i;
+ i 
+---
+ 2
+ 3
+(2 rows)
+
diff --git a/contrib/btree_gin/expected/float8.out b/contrib/btree_gin/expected/float8.out
new file mode 100644
index 0000000..a41d4f9
--- /dev/null
+++ b/contrib/btree_gin/expected/float8.out
@@ -0,0 +1,44 @@
+set enable_seqscan=off;
+CREATE TABLE test_float8 (
+	i float8
+);
+INSERT INTO test_float8 VALUES (-2),(-1),(0),(1),(2),(3);
+CREATE INDEX idx_float8 ON test_float8 USING gin (i);
+SELECT * FROM test_float8 WHERE i<1::float8 ORDER BY i;
+ i  
+----
+ -2
+ -1
+  0
+(3 rows)
+
+SELECT * FROM test_float8 WHERE i<=1::float8 ORDER BY i;
+ i  
+----
+ -2
+ -1
+  0
+  1
+(4 rows)
+
+SELECT * FROM test_float8 WHERE i=1::float8 ORDER BY i;
+ i 
+---
+ 1
+(1 row)
+
+SELECT * FROM test_float8 WHERE i>=1::float8 ORDER BY i;
+ i 
+---
+ 1
+ 2
+ 3
+(3 rows)
+
+SELECT * FROM test_float8 WHERE i>1::float8 ORDER BY i;
+ i 
+---
+ 2
+ 3
+(2 rows)
+
diff --git a/contrib/btree_gin/expected/inet.out b/contrib/btree_gin/expected/inet.out
new file mode 100644
index 0000000..aa6147f
--- /dev/null
+++ b/contrib/btree_gin/expected/inet.out
@@ -0,0 +1,51 @@
+set enable_seqscan=off;
+CREATE TABLE test_inet (
+	i inet
+);
+INSERT INTO test_inet VALUES
+	( '1.2.3.4/16' ),
+	( '1.2.4.4/16' ),
+	( '1.2.5.4/16' ),
+	( '1.2.6.4/16' ),
+	( '1.2.7.4/16' ),
+	( '1.2.8.4/16' )
+;
+CREATE INDEX idx_inet ON test_inet USING gin (i);
+SELECT * FROM test_inet WHERE i<'1.2.6.4/16'::inet ORDER BY i;
+     i      
+------------
+ 1.2.3.4/16
+ 1.2.4.4/16
+ 1.2.5.4/16
+(3 rows)
+
+SELECT * FROM test_inet WHERE i<='1.2.6.4/16'::inet ORDER BY i;
+     i      
+------------
+ 1.2.3.4/16
+ 1.2.4.4/16
+ 1.2.5.4/16
+ 1.2.6.4/16
+(4 rows)
+
+SELECT * FROM test_inet WHERE i='1.2.6.4/16'::inet ORDER BY i;
+     i      
+------------
+ 1.2.6.4/16
+(1 row)
+
+SELECT * FROM test_inet WHERE i>='1.2.6.4/16'::inet ORDER BY i;
+     i      
+------------
+ 1.2.6.4/16
+ 1.2.7.4/16
+ 1.2.8.4/16
+(3 rows)
+
+SELECT * FROM test_inet WHERE i>'1.2.6.4/16'::inet ORDER BY i;
+     i      
+------------
+ 1.2.7.4/16
+ 1.2.8.4/16
+(2 rows)
+
diff --git a/contrib/btree_gin/expected/install_btree_gin.out b/contrib/btree_gin/expected/install_btree_gin.out
new file mode 100644
index 0000000..631a0df
--- /dev/null
+++ b/contrib/btree_gin/expected/install_btree_gin.out
@@ -0,0 +1,9 @@
+CREATE EXTENSION btree_gin;
+-- Check whether any of our opclasses fail amvalidate
+SELECT amname, opcname
+FROM pg_opclass opc LEFT JOIN pg_am am ON am.oid = opcmethod
+WHERE opc.oid >= 16384 AND NOT amvalidate(opc.oid);
+ amname | opcname 
+--------+---------
+(0 rows)
+
diff --git a/contrib/btree_gin/expected/int2.out b/contrib/btree_gin/expected/int2.out
new file mode 100644
index 0000000..20d66a1
--- /dev/null
+++ b/contrib/btree_gin/expected/int2.out
@@ -0,0 +1,44 @@
+set enable_seqscan=off;
+CREATE TABLE test_int2 (
+	i int2
+);
+INSERT INTO test_int2 VALUES (-2),(-1),(0),(1),(2),(3);
+CREATE INDEX idx_int2 ON test_int2 USING gin (i);
+SELECT * FROM test_int2 WHERE i<1::int2 ORDER BY i;
+ i  
+----
+ -2
+ -1
+  0
+(3 rows)
+
+SELECT * FROM test_int2 WHERE i<=1::int2 ORDER BY i;
+ i  
+----
+ -2
+ -1
+  0
+  1
+(4 rows)
+
+SELECT * FROM test_int2 WHERE i=1::int2 ORDER BY i;
+ i 
+---
+ 1
+(1 row)
+
+SELECT * FROM test_int2 WHERE i>=1::int2 ORDER BY i;
+ i 
+---
+ 1
+ 2
+ 3
+(3 rows)
+
+SELECT * FROM test_int2 WHERE i>1::int2 ORDER BY i;
+ i 
+---
+ 2
+ 3
+(2 rows)
+
diff --git a/contrib/btree_gin/expected/int4.out b/contrib/btree_gin/expected/int4.out
new file mode 100644
index 0000000..0f0122c
--- /dev/null
+++ b/contrib/btree_gin/expected/int4.out
@@ -0,0 +1,44 @@
+set enable_seqscan=off;
+CREATE TABLE test_int4 (
+	i int4
+);
+INSERT INTO test_int4 VALUES (-2),(-1),(0),(1),(2),(3);
+CREATE INDEX idx_int4 ON test_int4 USING gin (i);
+SELECT * FROM test_int4 WHERE i<1::int4 ORDER BY i;
+ i  
+----
+ -2
+ -1
+  0
+(3 rows)
+
+SELECT * FROM test_int4 WHERE i<=1::int4 ORDER BY i;
+ i  
+----
+ -2
+ -1
+  0
+  1
+(4 rows)
+
+SELECT * FROM test_int4 WHERE i=1::int4 ORDER BY i;
+ i 
+---
+ 1
+(1 row)
+
+SELECT * FROM test_int4 WHERE i>=1::int4 ORDER BY i;
+ i 
+---
+ 1
+ 2
+ 3
+(3 rows)
+
+SELECT * FROM test_int4 WHERE i>1::int4 ORDER BY i;
+ i 
+---
+ 2
+ 3
+(2 rows)
+
diff --git a/contrib/btree_gin/expected/int8.out b/contrib/btree_gin/expected/int8.out
new file mode 100644
index 0000000..307e19e
--- /dev/null
+++ b/contrib/btree_gin/expected/int8.out
@@ -0,0 +1,44 @@
+set enable_seqscan=off;
+CREATE TABLE test_int8 (
+	i int8
+);
+INSERT INTO test_int8 VALUES (-2),(-1),(0),(1),(2),(3);
+CREATE INDEX idx_int8 ON test_int8 USING gin (i);
+SELECT * FROM test_int8 WHERE i<1::int8 ORDER BY i;
+ i  
+----
+ -2
+ -1
+  0
+(3 rows)
+
+SELECT * FROM test_int8 WHERE i<=1::int8 ORDER BY i;
+ i  
+----
+ -2
+ -1
+  0
+  1
+(4 rows)
+
+SELECT * FROM test_int8 WHERE i=1::int8 ORDER BY i;
+ i 
+---
+ 1
+(1 row)
+
+SELECT * FROM test_int8 WHERE i>=1::int8 ORDER BY i;
+ i 
+---
+ 1
+ 2
+ 3
+(3 rows)
+
+SELECT * FROM test_int8 WHERE i>1::int8 ORDER BY i;
+ i 
+---
+ 2
+ 3
+(2 rows)
+
diff --git a/contrib/btree_gin/expected/interval.out b/contrib/btree_gin/expected/interval.out
new file mode 100644
index 0000000..1f6ef54
--- /dev/null
+++ b/contrib/btree_gin/expected/interval.out
@@ -0,0 +1,51 @@
+set enable_seqscan=off;
+CREATE TABLE test_interval (
+	i interval
+);
+INSERT INTO test_interval VALUES
+	( '03:55:08' ),
+	( '04:55:08' ),
+	( '05:55:08' ),
+	( '08:55:08' ),
+	( '09:55:08' ),
+	( '10:55:08' )
+;
+CREATE INDEX idx_interval ON test_interval USING gin (i);
+SELECT * FROM test_interval WHERE i<'08:55:08'::interval ORDER BY i;
+            i             
+--------------------------
+ @ 3 hours 55 mins 8 secs
+ @ 4 hours 55 mins 8 secs
+ @ 5 hours 55 mins 8 secs
+(3 rows)
+
+SELECT * FROM test_interval WHERE i<='08:55:08'::interval ORDER BY i;
+            i             
+--------------------------
+ @ 3 hours 55 mins 8 secs
+ @ 4 hours 55 mins 8 secs
+ @ 5 hours 55 mins 8 secs
+ @ 8 hours 55 mins 8 secs
+(4 rows)
+
+SELECT * FROM test_interval WHERE i='08:55:08'::interval ORDER BY i;
+            i             
+--------------------------
+ @ 8 hours 55 mins 8 secs
+(1 row)
+
+SELECT * FROM test_interval WHERE i>='08:55:08'::interval ORDER BY i;
+             i             
+---------------------------
+ @ 8 hours 55 mins 8 secs
+ @ 9 hours 55 mins 8 secs
+ @ 10 hours 55 mins 8 secs
+(3 rows)
+
+SELECT * FROM test_interval WHERE i>'08:55:08'::interval ORDER BY i;
+             i             
+---------------------------
+ @ 9 hours 55 mins 8 secs
+ @ 10 hours 55 mins 8 secs
+(2 rows)
+
diff --git a/contrib/btree_gin/expected/macaddr.out b/contrib/btree_gin/expected/macaddr.out
new file mode 100644
index 0000000..ebceb01
--- /dev/null
+++ b/contrib/btree_gin/expected/macaddr.out
@@ -0,0 +1,51 @@
+set enable_seqscan=off;
+CREATE TABLE test_macaddr (
+	i macaddr
+);
+INSERT INTO test_macaddr VALUES
+	( '22:00:5c:03:55:08' ),
+	( '22:00:5c:04:55:08' ),
+	( '22:00:5c:05:55:08' ),
+	( '22:00:5c:08:55:08' ),
+	( '22:00:5c:09:55:08' ),
+	( '22:00:5c:10:55:08' )
+;
+CREATE INDEX idx_macaddr ON test_macaddr USING gin (i);
+SELECT * FROM test_macaddr WHERE i<'22:00:5c:08:55:08'::macaddr ORDER BY i;
+         i         
+-------------------
+ 22:00:5c:03:55:08
+ 22:00:5c:04:55:08
+ 22:00:5c:05:55:08
+(3 rows)
+
+SELECT * FROM test_macaddr WHERE i<='22:00:5c:08:55:08'::macaddr ORDER BY i;
+         i         
+-------------------
+ 22:00:5c:03:55:08
+ 22:00:5c:04:55:08
+ 22:00:5c:05:55:08
+ 22:00:5c:08:55:08
+(4 rows)
+
+SELECT * FROM test_macaddr WHERE i='22:00:5c:08:55:08'::macaddr ORDER BY i;
+         i         
+-------------------
+ 22:00:5c:08:55:08
+(1 row)
+
+SELECT * FROM test_macaddr WHERE i>='22:00:5c:08:55:08'::macaddr ORDER BY i;
+         i         
+-------------------
+ 22:00:5c:08:55:08
+ 22:00:5c:09:55:08
+ 22:00:5c:10:55:08
+(3 rows)
+
+SELECT * FROM test_macaddr WHERE i>'22:00:5c:08:55:08'::macaddr ORDER BY i;
+         i         
+-------------------
+ 22:00:5c:09:55:08
+ 22:00:5c:10:55:08
+(2 rows)
+
diff --git a/contrib/btree_gin/expected/macaddr8.out b/contrib/btree_gin/expected/macaddr8.out
new file mode 100644
index 0000000..025b0c1
--- /dev/null
+++ b/contrib/btree_gin/expected/macaddr8.out
@@ -0,0 +1,51 @@
+set enable_seqscan=off;
+CREATE TABLE test_macaddr8 (
+	i macaddr8
+);
+INSERT INTO test_macaddr8 VALUES
+	( '22:00:5c:03:55:08:01:02' ),
+	( '22:00:5c:04:55:08:01:02' ),
+	( '22:00:5c:05:55:08:01:02' ),
+	( '22:00:5c:08:55:08:01:02' ),
+	( '22:00:5c:09:55:08:01:02' ),
+	( '22:00:5c:10:55:08:01:02' )
+;
+CREATE INDEX idx_macaddr8 ON test_macaddr8 USING gin (i);
+SELECT * FROM test_macaddr8 WHERE i<'22:00:5c:08:55:08:01:02'::macaddr8 ORDER BY i;
+            i            
+-------------------------
+ 22:00:5c:03:55:08:01:02
+ 22:00:5c:04:55:08:01:02
+ 22:00:5c:05:55:08:01:02
+(3 rows)
+
+SELECT * FROM test_macaddr8 WHERE i<='22:00:5c:08:55:08:01:02'::macaddr8 ORDER BY i;
+            i            
+-------------------------
+ 22:00:5c:03:55:08:01:02
+ 22:00:5c:04:55:08:01:02
+ 22:00:5c:05:55:08:01:02
+ 22:00:5c:08:55:08:01:02
+(4 rows)
+
+SELECT * FROM test_macaddr8 WHERE i='22:00:5c:08:55:08:01:02'::macaddr8 ORDER BY i;
+            i            
+-------------------------
+ 22:00:5c:08:55:08:01:02
+(1 row)
+
+SELECT * FROM test_macaddr8 WHERE i>='22:00:5c:08:55:08:01:02'::macaddr8 ORDER BY i;
+            i            
+-------------------------
+ 22:00:5c:08:55:08:01:02
+ 22:00:5c:09:55:08:01:02
+ 22:00:5c:10:55:08:01:02
+(3 rows)
+
+SELECT * FROM test_macaddr8 WHERE i>'22:00:5c:08:55:08:01:02'::macaddr8 ORDER BY i;
+            i            
+-------------------------
+ 22:00:5c:09:55:08:01:02
+ 22:00:5c:10:55:08:01:02
+(2 rows)
+
diff --git a/contrib/btree_gin/expected/money.out b/contrib/btree_gin/expected/money.out
new file mode 100644
index 0000000..a0ba571
--- /dev/null
+++ b/contrib/btree_gin/expected/money.out
@@ -0,0 +1,44 @@
+set enable_seqscan=off;
+CREATE TABLE test_money (
+	i money
+);
+INSERT INTO test_money VALUES ('-2'),('-1'),('0'),('1'),('2'),('3');
+CREATE INDEX idx_money ON test_money USING gin (i);
+SELECT * FROM test_money WHERE i<'1'::money ORDER BY i;
+   i    
+--------
+ -$2.00
+ -$1.00
+  $0.00
+(3 rows)
+
+SELECT * FROM test_money WHERE i<='1'::money ORDER BY i;
+   i    
+--------
+ -$2.00
+ -$1.00
+  $0.00
+  $1.00
+(4 rows)
+
+SELECT * FROM test_money WHERE i='1'::money ORDER BY i;
+   i   
+-------
+ $1.00
+(1 row)
+
+SELECT * FROM test_money WHERE i>='1'::money ORDER BY i;
+   i   
+-------
+ $1.00
+ $2.00
+ $3.00
+(3 rows)
+
+SELECT * FROM test_money WHERE i>'1'::money ORDER BY i;
+   i   
+-------
+ $2.00
+ $3.00
+(2 rows)
+
diff --git a/contrib/btree_gin/expected/name.out b/contrib/btree_gin/expected/name.out
new file mode 100644
index 0000000..174de65
--- /dev/null
+++ b/contrib/btree_gin/expected/name.out
@@ -0,0 +1,97 @@
+set enable_seqscan=off;
+CREATE TABLE test_name (
+	i name
+);
+INSERT INTO test_name VALUES ('a'),('ab'),('abc'),('abb'),('axy'),('xyz');
+CREATE INDEX idx_name ON test_name USING gin (i);
+SELECT * FROM test_name WHERE i<'abc' ORDER BY i;
+  i  
+-----
+ a
+ ab
+ abb
+(3 rows)
+
+SELECT * FROM test_name WHERE i<='abc' ORDER BY i;
+  i  
+-----
+ a
+ ab
+ abb
+ abc
+(4 rows)
+
+SELECT * FROM test_name WHERE i='abc' ORDER BY i;
+  i  
+-----
+ abc
+(1 row)
+
+SELECT * FROM test_name WHERE i>='abc' ORDER BY i;
+  i  
+-----
+ abc
+ axy
+ xyz
+(3 rows)
+
+SELECT * FROM test_name WHERE i>'abc' ORDER BY i;
+  i  
+-----
+ axy
+ xyz
+(2 rows)
+
+EXPLAIN (COSTS OFF) SELECT * FROM test_name WHERE i<'abc' ORDER BY i;
+                 QUERY PLAN                  
+---------------------------------------------
+ Sort
+   Sort Key: i
+   ->  Bitmap Heap Scan on test_name
+         Recheck Cond: (i < 'abc'::name)
+         ->  Bitmap Index Scan on idx_name
+               Index Cond: (i < 'abc'::name)
+(6 rows)
+
+EXPLAIN (COSTS OFF) SELECT * FROM test_name WHERE i<='abc' ORDER BY i;
+                  QUERY PLAN                  
+----------------------------------------------
+ Sort
+   Sort Key: i
+   ->  Bitmap Heap Scan on test_name
+         Recheck Cond: (i <= 'abc'::name)
+         ->  Bitmap Index Scan on idx_name
+               Index Cond: (i <= 'abc'::name)
+(6 rows)
+
+EXPLAIN (COSTS OFF) SELECT * FROM test_name WHERE i='abc' ORDER BY i;
+              QUERY PLAN               
+---------------------------------------
+ Bitmap Heap Scan on test_name
+   Recheck Cond: (i = 'abc'::name)
+   ->  Bitmap Index Scan on idx_name
+         Index Cond: (i = 'abc'::name)
+(4 rows)
+
+EXPLAIN (COSTS OFF) SELECT * FROM test_name WHERE i>='abc' ORDER BY i;
+                  QUERY PLAN                  
+----------------------------------------------
+ Sort
+   Sort Key: i
+   ->  Bitmap Heap Scan on test_name
+         Recheck Cond: (i >= 'abc'::name)
+         ->  Bitmap Index Scan on idx_name
+               Index Cond: (i >= 'abc'::name)
+(6 rows)
+
+EXPLAIN (COSTS OFF) SELECT * FROM test_name WHERE i>'abc' ORDER BY i;
+                 QUERY PLAN                  
+---------------------------------------------
+ Sort
+   Sort Key: i
+   ->  Bitmap Heap Scan on test_name
+         Recheck Cond: (i > 'abc'::name)
+         ->  Bitmap Index Scan on idx_name
+               Index Cond: (i > 'abc'::name)
+(6 rows)
+
diff --git a/contrib/btree_gin/expected/numeric.out b/contrib/btree_gin/expected/numeric.out
new file mode 100644
index 0000000..f10a672
--- /dev/null
+++ b/contrib/btree_gin/expected/numeric.out
@@ -0,0 +1,44 @@
+set enable_seqscan=off;
+CREATE TABLE test_numeric (
+	i numeric
+);
+INSERT INTO test_numeric VALUES (-2),(-1),(0),(1),(2),(3);
+CREATE INDEX idx_numeric ON test_numeric USING gin (i);
+SELECT * FROM test_numeric WHERE i<'1'::numeric ORDER BY i;
+ i  
+----
+ -2
+ -1
+  0
+(3 rows)
+
+SELECT * FROM test_numeric WHERE i<='1'::numeric ORDER BY i;
+ i  
+----
+ -2
+ -1
+  0
+  1
+(4 rows)
+
+SELECT * FROM test_numeric WHERE i='1'::numeric ORDER BY i;
+ i 
+---
+ 1
+(1 row)
+
+SELECT * FROM test_numeric WHERE i>='1'::numeric ORDER BY i;
+ i 
+---
+ 1
+ 2
+ 3
+(3 rows)
+
+SELECT * FROM test_numeric WHERE i>'1'::numeric ORDER BY i;
+ i 
+---
+ 2
+ 3
+(2 rows)
+
diff --git a/contrib/btree_gin/expected/oid.out b/contrib/btree_gin/expected/oid.out
new file mode 100644
index 0000000..19e15c7
--- /dev/null
+++ b/contrib/btree_gin/expected/oid.out
@@ -0,0 +1,44 @@
+set enable_seqscan=off;
+CREATE TABLE test_oid (
+	i oid
+);
+INSERT INTO test_oid VALUES (0),(1),(2),(3),(4),(5);
+CREATE INDEX idx_oid ON test_oid USING gin (i);
+SELECT * FROM test_oid WHERE i<3::oid ORDER BY i;
+ i 
+---
+ 0
+ 1
+ 2
+(3 rows)
+
+SELECT * FROM test_oid WHERE i<=3::oid ORDER BY i;
+ i 
+---
+ 0
+ 1
+ 2
+ 3
+(4 rows)
+
+SELECT * FROM test_oid WHERE i=3::oid ORDER BY i;
+ i 
+---
+ 3
+(1 row)
+
+SELECT * FROM test_oid WHERE i>=3::oid ORDER BY i;
+ i 
+---
+ 3
+ 4
+ 5
+(3 rows)
+
+SELECT * FROM test_oid WHERE i>3::oid ORDER BY i;
+ i 
+---
+ 4
+ 5
+(2 rows)
+
diff --git a/contrib/btree_gin/expected/text.out b/contrib/btree_gin/expected/text.out
new file mode 100644
index 0000000..3e31ad7
--- /dev/null
+++ b/contrib/btree_gin/expected/text.out
@@ -0,0 +1,44 @@
+set enable_seqscan=off;
+CREATE TABLE test_text (
+	i text
+);
+INSERT INTO test_text VALUES ('a'),('ab'),('abc'),('abb'),('axy'),('xyz');
+CREATE INDEX idx_text ON test_text USING gin (i);
+SELECT * FROM test_text WHERE i<'abc' ORDER BY i;
+  i  
+-----
+ a
+ ab
+ abb
+(3 rows)
+
+SELECT * FROM test_text WHERE i<='abc' ORDER BY i;
+  i  
+-----
+ a
+ ab
+ abb
+ abc
+(4 rows)
+
+SELECT * FROM test_text WHERE i='abc' ORDER BY i;
+  i  
+-----
+ abc
+(1 row)
+
+SELECT * FROM test_text WHERE i>='abc' ORDER BY i;
+  i  
+-----
+ abc
+ axy
+ xyz
+(3 rows)
+
+SELECT * FROM test_text WHERE i>'abc' ORDER BY i;
+  i  
+-----
+ axy
+ xyz
+(2 rows)
+
diff --git a/contrib/btree_gin/expected/time.out b/contrib/btree_gin/expected/time.out
new file mode 100644
index 0000000..be6b084
--- /dev/null
+++ b/contrib/btree_gin/expected/time.out
@@ -0,0 +1,51 @@
+set enable_seqscan=off;
+CREATE TABLE test_time (
+	i time
+);
+INSERT INTO test_time VALUES
+	( '03:55:08' ),
+	( '04:55:08' ),
+	( '05:55:08' ),
+	( '08:55:08' ),
+	( '09:55:08' ),
+	( '10:55:08' )
+;
+CREATE INDEX idx_time ON test_time USING gin (i);
+SELECT * FROM test_time WHERE i<'08:55:08'::time ORDER BY i;
+    i     
+----------
+ 03:55:08
+ 04:55:08
+ 05:55:08
+(3 rows)
+
+SELECT * FROM test_time WHERE i<='08:55:08'::time ORDER BY i;
+    i     
+----------
+ 03:55:08
+ 04:55:08
+ 05:55:08
+ 08:55:08
+(4 rows)
+
+SELECT * FROM test_time WHERE i='08:55:08'::time ORDER BY i;
+    i     
+----------
+ 08:55:08
+(1 row)
+
+SELECT * FROM test_time WHERE i>='08:55:08'::time ORDER BY i;
+    i     
+----------
+ 08:55:08
+ 09:55:08
+ 10:55:08
+(3 rows)
+
+SELECT * FROM test_time WHERE i>'08:55:08'::time ORDER BY i;
+    i     
+----------
+ 09:55:08
+ 10:55:08
+(2 rows)
+
diff --git a/contrib/btree_gin/expected/timestamp.out b/contrib/btree_gin/expected/timestamp.out
new file mode 100644
index 0000000..a236cdc
--- /dev/null
+++ b/contrib/btree_gin/expected/timestamp.out
@@ -0,0 +1,51 @@
+set enable_seqscan=off;
+CREATE TABLE test_timestamp (
+	i timestamp
+);
+INSERT INTO test_timestamp VALUES
+	( '2004-10-26 03:55:08' ),
+	( '2004-10-26 04:55:08' ),
+	( '2004-10-26 05:55:08' ),
+	( '2004-10-26 08:55:08' ),
+	( '2004-10-26 09:55:08' ),
+	( '2004-10-26 10:55:08' )
+;
+CREATE INDEX idx_timestamp ON test_timestamp USING gin (i);
+SELECT * FROM test_timestamp WHERE i<'2004-10-26 08:55:08'::timestamp ORDER BY i;
+            i             
+--------------------------
+ Tue Oct 26 03:55:08 2004
+ Tue Oct 26 04:55:08 2004
+ Tue Oct 26 05:55:08 2004
+(3 rows)
+
+SELECT * FROM test_timestamp WHERE i<='2004-10-26 08:55:08'::timestamp ORDER BY i;
+            i             
+--------------------------
+ Tue Oct 26 03:55:08 2004
+ Tue Oct 26 04:55:08 2004
+ Tue Oct 26 05:55:08 2004
+ Tue Oct 26 08:55:08 2004
+(4 rows)
+
+SELECT * FROM test_timestamp WHERE i='2004-10-26 08:55:08'::timestamp ORDER BY i;
+            i             
+--------------------------
+ Tue Oct 26 08:55:08 2004
+(1 row)
+
+SELECT * FROM test_timestamp WHERE i>='2004-10-26 08:55:08'::timestamp ORDER BY i;
+            i             
+--------------------------
+ Tue Oct 26 08:55:08 2004
+ Tue Oct 26 09:55:08 2004
+ Tue Oct 26 10:55:08 2004
+(3 rows)
+
+SELECT * FROM test_timestamp WHERE i>'2004-10-26 08:55:08'::timestamp ORDER BY i;
+            i             
+--------------------------
+ Tue Oct 26 09:55:08 2004
+ Tue Oct 26 10:55:08 2004
+(2 rows)
+
diff --git a/contrib/btree_gin/expected/timestamptz.out b/contrib/btree_gin/expected/timestamptz.out
new file mode 100644
index 0000000..d53963d
--- /dev/null
+++ b/contrib/btree_gin/expected/timestamptz.out
@@ -0,0 +1,51 @@
+set enable_seqscan=off;
+CREATE TABLE test_timestamptz (
+	i timestamptz
+);
+INSERT INTO test_timestamptz VALUES
+	( '2004-10-26 03:55:08' ),
+	( '2004-10-26 04:55:08' ),
+	( '2004-10-26 05:55:08' ),
+	( '2004-10-26 08:55:08' ),
+	( '2004-10-26 09:55:08' ),
+	( '2004-10-26 10:55:08' )
+;
+CREATE INDEX idx_timestamptz ON test_timestamptz USING gin (i);
+SELECT * FROM test_timestamptz WHERE i<'2004-10-26 08:55:08'::timestamptz ORDER BY i;
+              i               
+------------------------------
+ Tue Oct 26 03:55:08 2004 PDT
+ Tue Oct 26 04:55:08 2004 PDT
+ Tue Oct 26 05:55:08 2004 PDT
+(3 rows)
+
+SELECT * FROM test_timestamptz WHERE i<='2004-10-26 08:55:08'::timestamptz ORDER BY i;
+              i               
+------------------------------
+ Tue Oct 26 03:55:08 2004 PDT
+ Tue Oct 26 04:55:08 2004 PDT
+ Tue Oct 26 05:55:08 2004 PDT
+ Tue Oct 26 08:55:08 2004 PDT
+(4 rows)
+
+SELECT * FROM test_timestamptz WHERE i='2004-10-26 08:55:08'::timestamptz ORDER BY i;
+              i               
+------------------------------
+ Tue Oct 26 08:55:08 2004 PDT
+(1 row)
+
+SELECT * FROM test_timestamptz WHERE i>='2004-10-26 08:55:08'::timestamptz ORDER BY i;
+              i               
+------------------------------
+ Tue Oct 26 08:55:08 2004 PDT
+ Tue Oct 26 09:55:08 2004 PDT
+ Tue Oct 26 10:55:08 2004 PDT
+(3 rows)
+
+SELECT * FROM test_timestamptz WHERE i>'2004-10-26 08:55:08'::timestamptz ORDER BY i;
+              i               
+------------------------------
+ Tue Oct 26 09:55:08 2004 PDT
+ Tue Oct 26 10:55:08 2004 PDT
+(2 rows)
+
diff --git a/contrib/btree_gin/expected/timetz.out b/contrib/btree_gin/expected/timetz.out
new file mode 100644
index 0000000..45aee71
--- /dev/null
+++ b/contrib/btree_gin/expected/timetz.out
@@ -0,0 +1,51 @@
+set enable_seqscan=off;
+CREATE TABLE test_timetz (
+	i timetz
+);
+INSERT INTO test_timetz VALUES
+	( '03:55:08 GMT+2' ),
+	( '04:55:08 GMT+2' ),
+	( '05:55:08 GMT+2' ),
+	( '08:55:08 GMT+2' ),
+	( '09:55:08 GMT+2' ),
+	( '10:55:08 GMT+2' )
+;
+CREATE INDEX idx_timetz ON test_timetz USING gin (i);
+SELECT * FROM test_timetz WHERE i<'08:55:08 GMT+2'::timetz ORDER BY i;
+      i      
+-------------
+ 03:55:08-02
+ 04:55:08-02
+ 05:55:08-02
+(3 rows)
+
+SELECT * FROM test_timetz WHERE i<='08:55:08 GMT+2'::timetz ORDER BY i;
+      i      
+-------------
+ 03:55:08-02
+ 04:55:08-02
+ 05:55:08-02
+ 08:55:08-02
+(4 rows)
+
+SELECT * FROM test_timetz WHERE i='08:55:08 GMT+2'::timetz ORDER BY i;
+      i      
+-------------
+ 08:55:08-02
+(1 row)
+
+SELECT * FROM test_timetz WHERE i>='08:55:08 GMT+2'::timetz ORDER BY i;
+      i      
+-------------
+ 08:55:08-02
+ 09:55:08-02
+ 10:55:08-02
+(3 rows)
+
+SELECT * FROM test_timetz WHERE i>'08:55:08 GMT+2'::timetz ORDER BY i;
+      i      
+-------------
+ 09:55:08-02
+ 10:55:08-02
+(2 rows)
+
diff --git a/contrib/btree_gin/expected/uuid.out b/contrib/btree_gin/expected/uuid.out
new file mode 100644
index 0000000..60fd8d6
--- /dev/null
+++ b/contrib/btree_gin/expected/uuid.out
@@ -0,0 +1,104 @@
+set enable_seqscan=off;
+CREATE TABLE test_uuid (
+	i uuid
+);
+INSERT INTO test_uuid VALUES
+	( '00000000-0000-0000-0000-000000000000' ),
+	( '299bc99f-2f79-4e3e-bfea-2cbfd62a7c27' ),
+	( '6264af33-0d43-4337-bf4e-43509b8a4be8' ),
+	( 'ce41c936-6acb-4feb-8c91-852a673e5a5c' ),
+	( 'd2ce731f-f2a8-4a2b-be37-8f0ba637427f' ),
+	( 'ffffffff-ffff-ffff-ffff-ffffffffffff' )
+;
+CREATE INDEX idx_uuid ON test_uuid USING gin (i);
+SELECT * FROM test_uuid WHERE i<'ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid ORDER BY i;
+                  i                   
+--------------------------------------
+ 00000000-0000-0000-0000-000000000000
+ 299bc99f-2f79-4e3e-bfea-2cbfd62a7c27
+ 6264af33-0d43-4337-bf4e-43509b8a4be8
+(3 rows)
+
+SELECT * FROM test_uuid WHERE i<='ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid ORDER BY i;
+                  i                   
+--------------------------------------
+ 00000000-0000-0000-0000-000000000000
+ 299bc99f-2f79-4e3e-bfea-2cbfd62a7c27
+ 6264af33-0d43-4337-bf4e-43509b8a4be8
+ ce41c936-6acb-4feb-8c91-852a673e5a5c
+(4 rows)
+
+SELECT * FROM test_uuid WHERE i='ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid ORDER BY i;
+                  i                   
+--------------------------------------
+ ce41c936-6acb-4feb-8c91-852a673e5a5c
+(1 row)
+
+SELECT * FROM test_uuid WHERE i>='ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid ORDER BY i;
+                  i                   
+--------------------------------------
+ ce41c936-6acb-4feb-8c91-852a673e5a5c
+ d2ce731f-f2a8-4a2b-be37-8f0ba637427f
+ ffffffff-ffff-ffff-ffff-ffffffffffff
+(3 rows)
+
+SELECT * FROM test_uuid WHERE i>'ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid ORDER BY i;
+                  i                   
+--------------------------------------
+ d2ce731f-f2a8-4a2b-be37-8f0ba637427f
+ ffffffff-ffff-ffff-ffff-ffffffffffff
+(2 rows)
+
+EXPLAIN (COSTS OFF) SELECT * FROM test_uuid WHERE i<'ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid ORDER BY i;
+                                  QUERY PLAN                                  
+------------------------------------------------------------------------------
+ Sort
+   Sort Key: i
+   ->  Bitmap Heap Scan on test_uuid
+         Recheck Cond: (i < 'ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid)
+         ->  Bitmap Index Scan on idx_uuid
+               Index Cond: (i < 'ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid)
+(6 rows)
+
+EXPLAIN (COSTS OFF) SELECT * FROM test_uuid WHERE i<='ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid ORDER BY i;
+                                  QUERY PLAN                                   
+-------------------------------------------------------------------------------
+ Sort
+   Sort Key: i
+   ->  Bitmap Heap Scan on test_uuid
+         Recheck Cond: (i <= 'ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid)
+         ->  Bitmap Index Scan on idx_uuid
+               Index Cond: (i <= 'ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid)
+(6 rows)
+
+EXPLAIN (COSTS OFF) SELECT * FROM test_uuid WHERE i='ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid ORDER BY i;
+                               QUERY PLAN                               
+------------------------------------------------------------------------
+ Bitmap Heap Scan on test_uuid
+   Recheck Cond: (i = 'ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid)
+   ->  Bitmap Index Scan on idx_uuid
+         Index Cond: (i = 'ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid)
+(4 rows)
+
+EXPLAIN (COSTS OFF) SELECT * FROM test_uuid WHERE i>='ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid ORDER BY i;
+                                  QUERY PLAN                                   
+-------------------------------------------------------------------------------
+ Sort
+   Sort Key: i
+   ->  Bitmap Heap Scan on test_uuid
+         Recheck Cond: (i >= 'ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid)
+         ->  Bitmap Index Scan on idx_uuid
+               Index Cond: (i >= 'ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid)
+(6 rows)
+
+EXPLAIN (COSTS OFF) SELECT * FROM test_uuid WHERE i>'ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid ORDER BY i;
+                                  QUERY PLAN                                  
+------------------------------------------------------------------------------
+ Sort
+   Sort Key: i
+   ->  Bitmap Heap Scan on test_uuid
+         Recheck Cond: (i > 'ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid)
+         ->  Bitmap Index Scan on idx_uuid
+               Index Cond: (i > 'ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid)
+(6 rows)
+
diff --git a/contrib/btree_gin/expected/varbit.out b/contrib/btree_gin/expected/varbit.out
new file mode 100644
index 0000000..e8a7718
--- /dev/null
+++ b/contrib/btree_gin/expected/varbit.out
@@ -0,0 +1,44 @@
+set enable_seqscan=off;
+CREATE TABLE test_varbit (
+	i varbit
+);
+INSERT INTO test_varbit VALUES ('001'),('010'),('011'),('100'),('101'),('110');
+CREATE INDEX idx_varbit ON test_varbit USING gin (i);
+SELECT * FROM test_varbit WHERE i<'100'::varbit ORDER BY i;
+  i  
+-----
+ 001
+ 010
+ 011
+(3 rows)
+
+SELECT * FROM test_varbit WHERE i<='100'::varbit ORDER BY i;
+  i  
+-----
+ 001
+ 010
+ 011
+ 100
+(4 rows)
+
+SELECT * FROM test_varbit WHERE i='100'::varbit ORDER BY i;
+  i  
+-----
+ 100
+(1 row)
+
+SELECT * FROM test_varbit WHERE i>='100'::varbit ORDER BY i;
+  i  
+-----
+ 100
+ 101
+ 110
+(3 rows)
+
+SELECT * FROM test_varbit WHERE i>'100'::varbit ORDER BY i;
+  i  
+-----
+ 101
+ 110
+(2 rows)
+
diff --git a/contrib/btree_gin/expected/varchar.out b/contrib/btree_gin/expected/varchar.out
new file mode 100644
index 0000000..086afbc
--- /dev/null
+++ b/contrib/btree_gin/expected/varchar.out
@@ -0,0 +1,44 @@
+set enable_seqscan=off;
+CREATE TABLE test_varchar (
+	i varchar
+);
+INSERT INTO test_varchar VALUES ('a'),('ab'),('abc'),('abb'),('axy'),('xyz');
+CREATE INDEX idx_varchar ON test_varchar USING gin (i);
+SELECT * FROM test_varchar WHERE i<'abc'::varchar ORDER BY i;
+  i  
+-----
+ a
+ ab
+ abb
+(3 rows)
+
+SELECT * FROM test_varchar WHERE i<='abc'::varchar ORDER BY i;
+  i  
+-----
+ a
+ ab
+ abb
+ abc
+(4 rows)
+
+SELECT * FROM test_varchar WHERE i='abc'::varchar ORDER BY i;
+  i  
+-----
+ abc
+(1 row)
+
+SELECT * FROM test_varchar WHERE i>='abc'::varchar ORDER BY i;
+  i  
+-----
+ abc
+ axy
+ xyz
+(3 rows)
+
+SELECT * FROM test_varchar WHERE i>'abc'::varchar ORDER BY i;
+  i  
+-----
+ axy
+ xyz
+(2 rows)
+
diff --git a/contrib/btree_gin/sql/bit.sql b/contrib/btree_gin/sql/bit.sql
new file mode 100644
index 0000000..6762be0
--- /dev/null
+++ b/contrib/btree_gin/sql/bit.sql
@@ -0,0 +1,15 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_bit (
+	i bit(3)
+);
+
+INSERT INTO test_bit VALUES ('001'),('010'),('011'),('100'),('101'),('110');
+
+CREATE INDEX idx_bit ON test_bit USING gin (i);
+
+SELECT * FROM test_bit WHERE i<'100'::bit(3) ORDER BY i;
+SELECT * FROM test_bit WHERE i<='100'::bit(3) ORDER BY i;
+SELECT * FROM test_bit WHERE i='100'::bit(3) ORDER BY i;
+SELECT * FROM test_bit WHERE i>='100'::bit(3) ORDER BY i;
+SELECT * FROM test_bit WHERE i>'100'::bit(3) ORDER BY i;
diff --git a/contrib/btree_gin/sql/bool.sql b/contrib/btree_gin/sql/bool.sql
new file mode 100644
index 0000000..dad2ff3
--- /dev/null
+++ b/contrib/btree_gin/sql/bool.sql
@@ -0,0 +1,27 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_bool (
+	i boolean
+);
+
+INSERT INTO test_bool VALUES (false),(true),(null);
+
+CREATE INDEX idx_bool ON test_bool USING gin (i);
+
+SELECT * FROM test_bool WHERE i<true ORDER BY i;
+SELECT * FROM test_bool WHERE i<=true ORDER BY i;
+SELECT * FROM test_bool WHERE i=true ORDER BY i;
+SELECT * FROM test_bool WHERE i>=true ORDER BY i;
+SELECT * FROM test_bool WHERE i>true ORDER BY i;
+
+SELECT * FROM test_bool WHERE i<false ORDER BY i;
+SELECT * FROM test_bool WHERE i<=false ORDER BY i;
+SELECT * FROM test_bool WHERE i=false ORDER BY i;
+SELECT * FROM test_bool WHERE i>=false ORDER BY i;
+SELECT * FROM test_bool WHERE i>false ORDER BY i;
+
+EXPLAIN (COSTS OFF) SELECT * FROM test_bool WHERE i<true ORDER BY i;
+EXPLAIN (COSTS OFF) SELECT * FROM test_bool WHERE i<=true ORDER BY i;
+EXPLAIN (COSTS OFF) SELECT * FROM test_bool WHERE i=true ORDER BY i;
+EXPLAIN (COSTS OFF) SELECT * FROM test_bool WHERE i>=true ORDER BY i;
+EXPLAIN (COSTS OFF) SELECT * FROM test_bool WHERE i>true ORDER BY i;
diff --git a/contrib/btree_gin/sql/bpchar.sql b/contrib/btree_gin/sql/bpchar.sql
new file mode 100644
index 0000000..4c951e3
--- /dev/null
+++ b/contrib/btree_gin/sql/bpchar.sql
@@ -0,0 +1,22 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_bpchar (
+	i char(10)
+);
+
+INSERT INTO test_bpchar VALUES ('a'),('ab'),('abc'),('abc   '),('abb'),('axy'),('xyz'),('xyz  ');
+
+CREATE INDEX idx_bpchar ON test_bpchar USING gin (i);
+
+SELECT * FROM test_bpchar WHERE i<'abc' ORDER BY i;
+SELECT * FROM test_bpchar WHERE i<='abc' ORDER BY i;
+SELECT * FROM test_bpchar WHERE i='abc' ORDER BY i;
+SELECT * FROM test_bpchar WHERE i='abc  ' ORDER BY i;
+SELECT * FROM test_bpchar WHERE i>='abc' ORDER BY i;
+SELECT * FROM test_bpchar WHERE i>'abc' ORDER BY i;
+
+EXPLAIN (COSTS OFF) SELECT * FROM test_bpchar WHERE i<'abc' ORDER BY i;
+EXPLAIN (COSTS OFF) SELECT * FROM test_bpchar WHERE i<='abc' ORDER BY i;
+EXPLAIN (COSTS OFF) SELECT * FROM test_bpchar WHERE i='abc' ORDER BY i;
+EXPLAIN (COSTS OFF) SELECT * FROM test_bpchar WHERE i>='abc' ORDER BY i;
+EXPLAIN (COSTS OFF) SELECT * FROM test_bpchar WHERE i>'abc' ORDER BY i;
diff --git a/contrib/btree_gin/sql/bytea.sql b/contrib/btree_gin/sql/bytea.sql
new file mode 100644
index 0000000..5f3eb11
--- /dev/null
+++ b/contrib/btree_gin/sql/bytea.sql
@@ -0,0 +1,17 @@
+set enable_seqscan=off;
+-- ensure consistent test output regardless of the default bytea format
+SET bytea_output TO escape;
+
+CREATE TABLE test_bytea (
+	i bytea
+);
+
+INSERT INTO test_bytea VALUES ('a'),('ab'),('abc'),('abb'),('axy'),('xyz');
+
+CREATE INDEX idx_bytea ON test_bytea USING gin (i);
+
+SELECT * FROM test_bytea WHERE i<'abc'::bytea ORDER BY i;
+SELECT * FROM test_bytea WHERE i<='abc'::bytea ORDER BY i;
+SELECT * FROM test_bytea WHERE i='abc'::bytea ORDER BY i;
+SELECT * FROM test_bytea WHERE i>='abc'::bytea ORDER BY i;
+SELECT * FROM test_bytea WHERE i>'abc'::bytea ORDER BY i;
diff --git a/contrib/btree_gin/sql/char.sql b/contrib/btree_gin/sql/char.sql
new file mode 100644
index 0000000..1f114a5
--- /dev/null
+++ b/contrib/btree_gin/sql/char.sql
@@ -0,0 +1,15 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_char (
+	i "char"
+);
+
+INSERT INTO test_char VALUES ('a'),('b'),('c'),('d'),('e'),('f');
+
+CREATE INDEX idx_char ON test_char USING gin (i);
+
+SELECT * FROM test_char WHERE i<'d'::"char" ORDER BY i;
+SELECT * FROM test_char WHERE i<='d'::"char" ORDER BY i;
+SELECT * FROM test_char WHERE i='d'::"char" ORDER BY i;
+SELECT * FROM test_char WHERE i>='d'::"char" ORDER BY i;
+SELECT * FROM test_char WHERE i>'d'::"char" ORDER BY i;
diff --git a/contrib/btree_gin/sql/cidr.sql b/contrib/btree_gin/sql/cidr.sql
new file mode 100644
index 0000000..4a76e5f
--- /dev/null
+++ b/contrib/btree_gin/sql/cidr.sql
@@ -0,0 +1,22 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_cidr (
+	i cidr
+);
+
+INSERT INTO test_cidr VALUES
+	( '1.2.3.4' ),
+	( '1.2.4.4' ),
+	( '1.2.5.4' ),
+	( '1.2.6.4' ),
+	( '1.2.7.4' ),
+	( '1.2.8.4' )
+;
+
+CREATE INDEX idx_cidr ON test_cidr USING gin (i);
+
+SELECT * FROM test_cidr WHERE i<'1.2.6.4'::cidr ORDER BY i;
+SELECT * FROM test_cidr WHERE i<='1.2.6.4'::cidr ORDER BY i;
+SELECT * FROM test_cidr WHERE i='1.2.6.4'::cidr ORDER BY i;
+SELECT * FROM test_cidr WHERE i>='1.2.6.4'::cidr ORDER BY i;
+SELECT * FROM test_cidr WHERE i>'1.2.6.4'::cidr ORDER BY i;
diff --git a/contrib/btree_gin/sql/date.sql b/contrib/btree_gin/sql/date.sql
new file mode 100644
index 0000000..35086f6
--- /dev/null
+++ b/contrib/btree_gin/sql/date.sql
@@ -0,0 +1,22 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_date (
+	i date
+);
+
+INSERT INTO test_date VALUES
+	( '2004-10-23' ),
+	( '2004-10-24' ),
+	( '2004-10-25' ),
+	( '2004-10-26' ),
+	( '2004-10-27' ),
+	( '2004-10-28' )
+;
+
+CREATE INDEX idx_date ON test_date USING gin (i);
+
+SELECT * FROM test_date WHERE i<'2004-10-26'::date ORDER BY i;
+SELECT * FROM test_date WHERE i<='2004-10-26'::date ORDER BY i;
+SELECT * FROM test_date WHERE i='2004-10-26'::date ORDER BY i;
+SELECT * FROM test_date WHERE i>='2004-10-26'::date ORDER BY i;
+SELECT * FROM test_date WHERE i>'2004-10-26'::date ORDER BY i;
diff --git a/contrib/btree_gin/sql/enum.sql b/contrib/btree_gin/sql/enum.sql
new file mode 100644
index 0000000..ec2a622
--- /dev/null
+++ b/contrib/btree_gin/sql/enum.sql
@@ -0,0 +1,26 @@
+set enable_seqscan=off;
+
+CREATE TYPE rainbow AS ENUM ('r','o','y','g','b','i','v');
+
+CREATE TABLE test_enum (
+   i rainbow
+);
+
+INSERT INTO test_enum VALUES ('v'),('y'),('r'),('g'),('o'),('i'),('b');
+
+CREATE INDEX idx_enum ON test_enum USING gin (i);
+
+SELECT * FROM test_enum WHERE i<'g'::rainbow ORDER BY i;
+SELECT * FROM test_enum WHERE i<='g'::rainbow ORDER BY i;
+SELECT * FROM test_enum WHERE i='g'::rainbow ORDER BY i;
+SELECT * FROM test_enum WHERE i>='g'::rainbow ORDER BY i;
+SELECT * FROM test_enum WHERE i>'g'::rainbow ORDER BY i;
+
+explain (costs off) SELECT * FROM test_enum WHERE i>='g'::rainbow ORDER BY i;
+
+
+-- make sure we handle the non-evenly-numbered oid case for enums
+create type e as enum ('0', '2', '3');
+alter type e add value '1' after '0';
+create table t as select (i % 4)::text::e from generate_series(0, 100000) as i;
+create index on t using gin (e);
diff --git a/contrib/btree_gin/sql/float4.sql b/contrib/btree_gin/sql/float4.sql
new file mode 100644
index 0000000..759778a
--- /dev/null
+++ b/contrib/btree_gin/sql/float4.sql
@@ -0,0 +1,15 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_float4 (
+	i float4
+);
+
+INSERT INTO test_float4 VALUES (-2),(-1),(0),(1),(2),(3);
+
+CREATE INDEX idx_float4 ON test_float4 USING gin (i);
+
+SELECT * FROM test_float4 WHERE i<1::float4 ORDER BY i;
+SELECT * FROM test_float4 WHERE i<=1::float4 ORDER BY i;
+SELECT * FROM test_float4 WHERE i=1::float4 ORDER BY i;
+SELECT * FROM test_float4 WHERE i>=1::float4 ORDER BY i;
+SELECT * FROM test_float4 WHERE i>1::float4 ORDER BY i;
diff --git a/contrib/btree_gin/sql/float8.sql b/contrib/btree_gin/sql/float8.sql
new file mode 100644
index 0000000..b046ac4
--- /dev/null
+++ b/contrib/btree_gin/sql/float8.sql
@@ -0,0 +1,15 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_float8 (
+	i float8
+);
+
+INSERT INTO test_float8 VALUES (-2),(-1),(0),(1),(2),(3);
+
+CREATE INDEX idx_float8 ON test_float8 USING gin (i);
+
+SELECT * FROM test_float8 WHERE i<1::float8 ORDER BY i;
+SELECT * FROM test_float8 WHERE i<=1::float8 ORDER BY i;
+SELECT * FROM test_float8 WHERE i=1::float8 ORDER BY i;
+SELECT * FROM test_float8 WHERE i>=1::float8 ORDER BY i;
+SELECT * FROM test_float8 WHERE i>1::float8 ORDER BY i;
diff --git a/contrib/btree_gin/sql/inet.sql b/contrib/btree_gin/sql/inet.sql
new file mode 100644
index 0000000..e5ec087
--- /dev/null
+++ b/contrib/btree_gin/sql/inet.sql
@@ -0,0 +1,22 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_inet (
+	i inet
+);
+
+INSERT INTO test_inet VALUES
+	( '1.2.3.4/16' ),
+	( '1.2.4.4/16' ),
+	( '1.2.5.4/16' ),
+	( '1.2.6.4/16' ),
+	( '1.2.7.4/16' ),
+	( '1.2.8.4/16' )
+;
+
+CREATE INDEX idx_inet ON test_inet USING gin (i);
+
+SELECT * FROM test_inet WHERE i<'1.2.6.4/16'::inet ORDER BY i;
+SELECT * FROM test_inet WHERE i<='1.2.6.4/16'::inet ORDER BY i;
+SELECT * FROM test_inet WHERE i='1.2.6.4/16'::inet ORDER BY i;
+SELECT * FROM test_inet WHERE i>='1.2.6.4/16'::inet ORDER BY i;
+SELECT * FROM test_inet WHERE i>'1.2.6.4/16'::inet ORDER BY i;
diff --git a/contrib/btree_gin/sql/install_btree_gin.sql b/contrib/btree_gin/sql/install_btree_gin.sql
new file mode 100644
index 0000000..746e776
--- /dev/null
+++ b/contrib/btree_gin/sql/install_btree_gin.sql
@@ -0,0 +1,6 @@
+CREATE EXTENSION btree_gin;
+
+-- Check whether any of our opclasses fail amvalidate
+SELECT amname, opcname
+FROM pg_opclass opc LEFT JOIN pg_am am ON am.oid = opcmethod
+WHERE opc.oid >= 16384 AND NOT amvalidate(opc.oid);
diff --git a/contrib/btree_gin/sql/int2.sql b/contrib/btree_gin/sql/int2.sql
new file mode 100644
index 0000000..f06f117
--- /dev/null
+++ b/contrib/btree_gin/sql/int2.sql
@@ -0,0 +1,15 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_int2 (
+	i int2
+);
+
+INSERT INTO test_int2 VALUES (-2),(-1),(0),(1),(2),(3);
+
+CREATE INDEX idx_int2 ON test_int2 USING gin (i);
+
+SELECT * FROM test_int2 WHERE i<1::int2 ORDER BY i;
+SELECT * FROM test_int2 WHERE i<=1::int2 ORDER BY i;
+SELECT * FROM test_int2 WHERE i=1::int2 ORDER BY i;
+SELECT * FROM test_int2 WHERE i>=1::int2 ORDER BY i;
+SELECT * FROM test_int2 WHERE i>1::int2 ORDER BY i;
diff --git a/contrib/btree_gin/sql/int4.sql b/contrib/btree_gin/sql/int4.sql
new file mode 100644
index 0000000..6499c29
--- /dev/null
+++ b/contrib/btree_gin/sql/int4.sql
@@ -0,0 +1,15 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_int4 (
+	i int4
+);
+
+INSERT INTO test_int4 VALUES (-2),(-1),(0),(1),(2),(3);
+
+CREATE INDEX idx_int4 ON test_int4 USING gin (i);
+
+SELECT * FROM test_int4 WHERE i<1::int4 ORDER BY i;
+SELECT * FROM test_int4 WHERE i<=1::int4 ORDER BY i;
+SELECT * FROM test_int4 WHERE i=1::int4 ORDER BY i;
+SELECT * FROM test_int4 WHERE i>=1::int4 ORDER BY i;
+SELECT * FROM test_int4 WHERE i>1::int4 ORDER BY i;
diff --git a/contrib/btree_gin/sql/int8.sql b/contrib/btree_gin/sql/int8.sql
new file mode 100644
index 0000000..4d9c287
--- /dev/null
+++ b/contrib/btree_gin/sql/int8.sql
@@ -0,0 +1,15 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_int8 (
+	i int8
+);
+
+INSERT INTO test_int8 VALUES (-2),(-1),(0),(1),(2),(3);
+
+CREATE INDEX idx_int8 ON test_int8 USING gin (i);
+
+SELECT * FROM test_int8 WHERE i<1::int8 ORDER BY i;
+SELECT * FROM test_int8 WHERE i<=1::int8 ORDER BY i;
+SELECT * FROM test_int8 WHERE i=1::int8 ORDER BY i;
+SELECT * FROM test_int8 WHERE i>=1::int8 ORDER BY i;
+SELECT * FROM test_int8 WHERE i>1::int8 ORDER BY i;
diff --git a/contrib/btree_gin/sql/interval.sql b/contrib/btree_gin/sql/interval.sql
new file mode 100644
index 0000000..e385158
--- /dev/null
+++ b/contrib/btree_gin/sql/interval.sql
@@ -0,0 +1,22 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_interval (
+	i interval
+);
+
+INSERT INTO test_interval VALUES
+	( '03:55:08' ),
+	( '04:55:08' ),
+	( '05:55:08' ),
+	( '08:55:08' ),
+	( '09:55:08' ),
+	( '10:55:08' )
+;
+
+CREATE INDEX idx_interval ON test_interval USING gin (i);
+
+SELECT * FROM test_interval WHERE i<'08:55:08'::interval ORDER BY i;
+SELECT * FROM test_interval WHERE i<='08:55:08'::interval ORDER BY i;
+SELECT * FROM test_interval WHERE i='08:55:08'::interval ORDER BY i;
+SELECT * FROM test_interval WHERE i>='08:55:08'::interval ORDER BY i;
+SELECT * FROM test_interval WHERE i>'08:55:08'::interval ORDER BY i;
diff --git a/contrib/btree_gin/sql/macaddr.sql b/contrib/btree_gin/sql/macaddr.sql
new file mode 100644
index 0000000..66566aa
--- /dev/null
+++ b/contrib/btree_gin/sql/macaddr.sql
@@ -0,0 +1,22 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_macaddr (
+	i macaddr
+);
+
+INSERT INTO test_macaddr VALUES
+	( '22:00:5c:03:55:08' ),
+	( '22:00:5c:04:55:08' ),
+	( '22:00:5c:05:55:08' ),
+	( '22:00:5c:08:55:08' ),
+	( '22:00:5c:09:55:08' ),
+	( '22:00:5c:10:55:08' )
+;
+
+CREATE INDEX idx_macaddr ON test_macaddr USING gin (i);
+
+SELECT * FROM test_macaddr WHERE i<'22:00:5c:08:55:08'::macaddr ORDER BY i;
+SELECT * FROM test_macaddr WHERE i<='22:00:5c:08:55:08'::macaddr ORDER BY i;
+SELECT * FROM test_macaddr WHERE i='22:00:5c:08:55:08'::macaddr ORDER BY i;
+SELECT * FROM test_macaddr WHERE i>='22:00:5c:08:55:08'::macaddr ORDER BY i;
+SELECT * FROM test_macaddr WHERE i>'22:00:5c:08:55:08'::macaddr ORDER BY i;
diff --git a/contrib/btree_gin/sql/macaddr8.sql b/contrib/btree_gin/sql/macaddr8.sql
new file mode 100644
index 0000000..86785c3
--- /dev/null
+++ b/contrib/btree_gin/sql/macaddr8.sql
@@ -0,0 +1,22 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_macaddr8 (
+	i macaddr8
+);
+
+INSERT INTO test_macaddr8 VALUES
+	( '22:00:5c:03:55:08:01:02' ),
+	( '22:00:5c:04:55:08:01:02' ),
+	( '22:00:5c:05:55:08:01:02' ),
+	( '22:00:5c:08:55:08:01:02' ),
+	( '22:00:5c:09:55:08:01:02' ),
+	( '22:00:5c:10:55:08:01:02' )
+;
+
+CREATE INDEX idx_macaddr8 ON test_macaddr8 USING gin (i);
+
+SELECT * FROM test_macaddr8 WHERE i<'22:00:5c:08:55:08:01:02'::macaddr8 ORDER BY i;
+SELECT * FROM test_macaddr8 WHERE i<='22:00:5c:08:55:08:01:02'::macaddr8 ORDER BY i;
+SELECT * FROM test_macaddr8 WHERE i='22:00:5c:08:55:08:01:02'::macaddr8 ORDER BY i;
+SELECT * FROM test_macaddr8 WHERE i>='22:00:5c:08:55:08:01:02'::macaddr8 ORDER BY i;
+SELECT * FROM test_macaddr8 WHERE i>'22:00:5c:08:55:08:01:02'::macaddr8 ORDER BY i;
diff --git a/contrib/btree_gin/sql/money.sql b/contrib/btree_gin/sql/money.sql
new file mode 100644
index 0000000..4a9c8c5
--- /dev/null
+++ b/contrib/btree_gin/sql/money.sql
@@ -0,0 +1,15 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_money (
+	i money
+);
+
+INSERT INTO test_money VALUES ('-2'),('-1'),('0'),('1'),('2'),('3');
+
+CREATE INDEX idx_money ON test_money USING gin (i);
+
+SELECT * FROM test_money WHERE i<'1'::money ORDER BY i;
+SELECT * FROM test_money WHERE i<='1'::money ORDER BY i;
+SELECT * FROM test_money WHERE i='1'::money ORDER BY i;
+SELECT * FROM test_money WHERE i>='1'::money ORDER BY i;
+SELECT * FROM test_money WHERE i>'1'::money ORDER BY i;
diff --git a/contrib/btree_gin/sql/name.sql b/contrib/btree_gin/sql/name.sql
new file mode 100644
index 0000000..c11580c
--- /dev/null
+++ b/contrib/btree_gin/sql/name.sql
@@ -0,0 +1,21 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_name (
+	i name
+);
+
+INSERT INTO test_name VALUES ('a'),('ab'),('abc'),('abb'),('axy'),('xyz');
+
+CREATE INDEX idx_name ON test_name USING gin (i);
+
+SELECT * FROM test_name WHERE i<'abc' ORDER BY i;
+SELECT * FROM test_name WHERE i<='abc' ORDER BY i;
+SELECT * FROM test_name WHERE i='abc' ORDER BY i;
+SELECT * FROM test_name WHERE i>='abc' ORDER BY i;
+SELECT * FROM test_name WHERE i>'abc' ORDER BY i;
+
+EXPLAIN (COSTS OFF) SELECT * FROM test_name WHERE i<'abc' ORDER BY i;
+EXPLAIN (COSTS OFF) SELECT * FROM test_name WHERE i<='abc' ORDER BY i;
+EXPLAIN (COSTS OFF) SELECT * FROM test_name WHERE i='abc' ORDER BY i;
+EXPLAIN (COSTS OFF) SELECT * FROM test_name WHERE i>='abc' ORDER BY i;
+EXPLAIN (COSTS OFF) SELECT * FROM test_name WHERE i>'abc' ORDER BY i;
diff --git a/contrib/btree_gin/sql/numeric.sql b/contrib/btree_gin/sql/numeric.sql
new file mode 100644
index 0000000..dbaaa2c
--- /dev/null
+++ b/contrib/btree_gin/sql/numeric.sql
@@ -0,0 +1,15 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_numeric (
+	i numeric
+);
+
+INSERT INTO test_numeric VALUES (-2),(-1),(0),(1),(2),(3);
+
+CREATE INDEX idx_numeric ON test_numeric USING gin (i);
+
+SELECT * FROM test_numeric WHERE i<'1'::numeric ORDER BY i;
+SELECT * FROM test_numeric WHERE i<='1'::numeric ORDER BY i;
+SELECT * FROM test_numeric WHERE i='1'::numeric ORDER BY i;
+SELECT * FROM test_numeric WHERE i>='1'::numeric ORDER BY i;
+SELECT * FROM test_numeric WHERE i>'1'::numeric ORDER BY i;
diff --git a/contrib/btree_gin/sql/oid.sql b/contrib/btree_gin/sql/oid.sql
new file mode 100644
index 0000000..1739f80
--- /dev/null
+++ b/contrib/btree_gin/sql/oid.sql
@@ -0,0 +1,15 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_oid (
+	i oid
+);
+
+INSERT INTO test_oid VALUES (0),(1),(2),(3),(4),(5);
+
+CREATE INDEX idx_oid ON test_oid USING gin (i);
+
+SELECT * FROM test_oid WHERE i<3::oid ORDER BY i;
+SELECT * FROM test_oid WHERE i<=3::oid ORDER BY i;
+SELECT * FROM test_oid WHERE i=3::oid ORDER BY i;
+SELECT * FROM test_oid WHERE i>=3::oid ORDER BY i;
+SELECT * FROM test_oid WHERE i>3::oid ORDER BY i;
diff --git a/contrib/btree_gin/sql/text.sql b/contrib/btree_gin/sql/text.sql
new file mode 100644
index 0000000..d5b3b39
--- /dev/null
+++ b/contrib/btree_gin/sql/text.sql
@@ -0,0 +1,15 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_text (
+	i text
+);
+
+INSERT INTO test_text VALUES ('a'),('ab'),('abc'),('abb'),('axy'),('xyz');
+
+CREATE INDEX idx_text ON test_text USING gin (i);
+
+SELECT * FROM test_text WHERE i<'abc' ORDER BY i;
+SELECT * FROM test_text WHERE i<='abc' ORDER BY i;
+SELECT * FROM test_text WHERE i='abc' ORDER BY i;
+SELECT * FROM test_text WHERE i>='abc' ORDER BY i;
+SELECT * FROM test_text WHERE i>'abc' ORDER BY i;
diff --git a/contrib/btree_gin/sql/time.sql b/contrib/btree_gin/sql/time.sql
new file mode 100644
index 0000000..62d709a
--- /dev/null
+++ b/contrib/btree_gin/sql/time.sql
@@ -0,0 +1,22 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_time (
+	i time
+);
+
+INSERT INTO test_time VALUES
+	( '03:55:08' ),
+	( '04:55:08' ),
+	( '05:55:08' ),
+	( '08:55:08' ),
+	( '09:55:08' ),
+	( '10:55:08' )
+;
+
+CREATE INDEX idx_time ON test_time USING gin (i);
+
+SELECT * FROM test_time WHERE i<'08:55:08'::time ORDER BY i;
+SELECT * FROM test_time WHERE i<='08:55:08'::time ORDER BY i;
+SELECT * FROM test_time WHERE i='08:55:08'::time ORDER BY i;
+SELECT * FROM test_time WHERE i>='08:55:08'::time ORDER BY i;
+SELECT * FROM test_time WHERE i>'08:55:08'::time ORDER BY i;
diff --git a/contrib/btree_gin/sql/timestamp.sql b/contrib/btree_gin/sql/timestamp.sql
new file mode 100644
index 0000000..56727e8
--- /dev/null
+++ b/contrib/btree_gin/sql/timestamp.sql
@@ -0,0 +1,22 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_timestamp (
+	i timestamp
+);
+
+INSERT INTO test_timestamp VALUES
+	( '2004-10-26 03:55:08' ),
+	( '2004-10-26 04:55:08' ),
+	( '2004-10-26 05:55:08' ),
+	( '2004-10-26 08:55:08' ),
+	( '2004-10-26 09:55:08' ),
+	( '2004-10-26 10:55:08' )
+;
+
+CREATE INDEX idx_timestamp ON test_timestamp USING gin (i);
+
+SELECT * FROM test_timestamp WHERE i<'2004-10-26 08:55:08'::timestamp ORDER BY i;
+SELECT * FROM test_timestamp WHERE i<='2004-10-26 08:55:08'::timestamp ORDER BY i;
+SELECT * FROM test_timestamp WHERE i='2004-10-26 08:55:08'::timestamp ORDER BY i;
+SELECT * FROM test_timestamp WHERE i>='2004-10-26 08:55:08'::timestamp ORDER BY i;
+SELECT * FROM test_timestamp WHERE i>'2004-10-26 08:55:08'::timestamp ORDER BY i;
diff --git a/contrib/btree_gin/sql/timestamptz.sql b/contrib/btree_gin/sql/timestamptz.sql
new file mode 100644
index 0000000..e6cfdb1
--- /dev/null
+++ b/contrib/btree_gin/sql/timestamptz.sql
@@ -0,0 +1,22 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_timestamptz (
+	i timestamptz
+);
+
+INSERT INTO test_timestamptz VALUES
+	( '2004-10-26 03:55:08' ),
+	( '2004-10-26 04:55:08' ),
+	( '2004-10-26 05:55:08' ),
+	( '2004-10-26 08:55:08' ),
+	( '2004-10-26 09:55:08' ),
+	( '2004-10-26 10:55:08' )
+;
+
+CREATE INDEX idx_timestamptz ON test_timestamptz USING gin (i);
+
+SELECT * FROM test_timestamptz WHERE i<'2004-10-26 08:55:08'::timestamptz ORDER BY i;
+SELECT * FROM test_timestamptz WHERE i<='2004-10-26 08:55:08'::timestamptz ORDER BY i;
+SELECT * FROM test_timestamptz WHERE i='2004-10-26 08:55:08'::timestamptz ORDER BY i;
+SELECT * FROM test_timestamptz WHERE i>='2004-10-26 08:55:08'::timestamptz ORDER BY i;
+SELECT * FROM test_timestamptz WHERE i>'2004-10-26 08:55:08'::timestamptz ORDER BY i;
diff --git a/contrib/btree_gin/sql/timetz.sql b/contrib/btree_gin/sql/timetz.sql
new file mode 100644
index 0000000..ca947b7
--- /dev/null
+++ b/contrib/btree_gin/sql/timetz.sql
@@ -0,0 +1,22 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_timetz (
+	i timetz
+);
+
+INSERT INTO test_timetz VALUES
+	( '03:55:08 GMT+2' ),
+	( '04:55:08 GMT+2' ),
+	( '05:55:08 GMT+2' ),
+	( '08:55:08 GMT+2' ),
+	( '09:55:08 GMT+2' ),
+	( '10:55:08 GMT+2' )
+;
+
+CREATE INDEX idx_timetz ON test_timetz USING gin (i);
+
+SELECT * FROM test_timetz WHERE i<'08:55:08 GMT+2'::timetz ORDER BY i;
+SELECT * FROM test_timetz WHERE i<='08:55:08 GMT+2'::timetz ORDER BY i;
+SELECT * FROM test_timetz WHERE i='08:55:08 GMT+2'::timetz ORDER BY i;
+SELECT * FROM test_timetz WHERE i>='08:55:08 GMT+2'::timetz ORDER BY i;
+SELECT * FROM test_timetz WHERE i>'08:55:08 GMT+2'::timetz ORDER BY i;
diff --git a/contrib/btree_gin/sql/uuid.sql b/contrib/btree_gin/sql/uuid.sql
new file mode 100644
index 0000000..3c141bd
--- /dev/null
+++ b/contrib/btree_gin/sql/uuid.sql
@@ -0,0 +1,28 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_uuid (
+	i uuid
+);
+
+INSERT INTO test_uuid VALUES
+	( '00000000-0000-0000-0000-000000000000' ),
+	( '299bc99f-2f79-4e3e-bfea-2cbfd62a7c27' ),
+	( '6264af33-0d43-4337-bf4e-43509b8a4be8' ),
+	( 'ce41c936-6acb-4feb-8c91-852a673e5a5c' ),
+	( 'd2ce731f-f2a8-4a2b-be37-8f0ba637427f' ),
+	( 'ffffffff-ffff-ffff-ffff-ffffffffffff' )
+;
+
+CREATE INDEX idx_uuid ON test_uuid USING gin (i);
+
+SELECT * FROM test_uuid WHERE i<'ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid ORDER BY i;
+SELECT * FROM test_uuid WHERE i<='ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid ORDER BY i;
+SELECT * FROM test_uuid WHERE i='ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid ORDER BY i;
+SELECT * FROM test_uuid WHERE i>='ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid ORDER BY i;
+SELECT * FROM test_uuid WHERE i>'ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid ORDER BY i;
+
+EXPLAIN (COSTS OFF) SELECT * FROM test_uuid WHERE i<'ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid ORDER BY i;
+EXPLAIN (COSTS OFF) SELECT * FROM test_uuid WHERE i<='ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid ORDER BY i;
+EXPLAIN (COSTS OFF) SELECT * FROM test_uuid WHERE i='ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid ORDER BY i;
+EXPLAIN (COSTS OFF) SELECT * FROM test_uuid WHERE i>='ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid ORDER BY i;
+EXPLAIN (COSTS OFF) SELECT * FROM test_uuid WHERE i>'ce41c936-6acb-4feb-8c91-852a673e5a5c'::uuid ORDER BY i;
diff --git a/contrib/btree_gin/sql/varbit.sql b/contrib/btree_gin/sql/varbit.sql
new file mode 100644
index 0000000..4ad2d0c
--- /dev/null
+++ b/contrib/btree_gin/sql/varbit.sql
@@ -0,0 +1,15 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_varbit (
+	i varbit
+);
+
+INSERT INTO test_varbit VALUES ('001'),('010'),('011'),('100'),('101'),('110');
+
+CREATE INDEX idx_varbit ON test_varbit USING gin (i);
+
+SELECT * FROM test_varbit WHERE i<'100'::varbit ORDER BY i;
+SELECT * FROM test_varbit WHERE i<='100'::varbit ORDER BY i;
+SELECT * FROM test_varbit WHERE i='100'::varbit ORDER BY i;
+SELECT * FROM test_varbit WHERE i>='100'::varbit ORDER BY i;
+SELECT * FROM test_varbit WHERE i>'100'::varbit ORDER BY i;
diff --git a/contrib/btree_gin/sql/varchar.sql b/contrib/btree_gin/sql/varchar.sql
new file mode 100644
index 0000000..dbdacab
--- /dev/null
+++ b/contrib/btree_gin/sql/varchar.sql
@@ -0,0 +1,15 @@
+set enable_seqscan=off;
+
+CREATE TABLE test_varchar (
+	i varchar
+);
+
+INSERT INTO test_varchar VALUES ('a'),('ab'),('abc'),('abb'),('axy'),('xyz');
+
+CREATE INDEX idx_varchar ON test_varchar USING gin (i);
+
+SELECT * FROM test_varchar WHERE i<'abc'::varchar ORDER BY i;
+SELECT * FROM test_varchar WHERE i<='abc'::varchar ORDER BY i;
+SELECT * FROM test_varchar WHERE i='abc'::varchar ORDER BY i;
+SELECT * FROM test_varchar WHERE i>='abc'::varchar ORDER BY i;
+SELECT * FROM test_varchar WHERE i>'abc'::varchar ORDER BY i;