-- This file and its contents are licensed under the Timescale License.
-- Please see the included NOTICE for copyright information and
-- LICENSE-TIMESCALE for a copy of the license.
\c :TEST_DBNAME :ROLE_SUPERUSER
CREATE OR REPLACE FUNCTION _timescaledb_internal.ts_segment_meta_min_max_append(internal, ANYELEMENT)
   RETURNS internal
   AS :TSL_MODULE_PATHNAME, 'ts_segment_meta_min_max_append'
   LANGUAGE C IMMUTABLE PARALLEL SAFE;
CREATE OR REPLACE FUNCTION _timescaledb_internal.ts_segment_meta_min_max_finish_max(internal, ANYELEMENT)
   RETURNS anyelement
   AS :TSL_MODULE_PATHNAME, 'ts_segment_meta_min_max_finish_max'
   LANGUAGE C IMMUTABLE PARALLEL SAFE;
CREATE OR REPLACE FUNCTION _timescaledb_internal.ts_segment_meta_min_max_finish_min(internal, ANYELEMENT)
   RETURNS anyelement
   AS :TSL_MODULE_PATHNAME, 'ts_segment_meta_min_max_finish_min'
   LANGUAGE C IMMUTABLE PARALLEL SAFE;
CREATE AGGREGATE _timescaledb_internal.segment_meta_min_max_agg_min(ANYELEMENT) (
    STYPE = internal,
    SFUNC = _timescaledb_internal.ts_segment_meta_min_max_append,
    FINALFUNC = _timescaledb_internal.ts_segment_meta_min_max_finish_min,
    FINALFUNC_EXTRA
);
CREATE AGGREGATE _timescaledb_internal.segment_meta_min_max_agg_max(ANYELEMENT) (
    STYPE = internal,
    SFUNC = _timescaledb_internal.ts_segment_meta_min_max_append,
    FINALFUNC = _timescaledb_internal.ts_segment_meta_min_max_finish_max,
    FINALFUNC_EXTRA
);
\ir include/rand_generator.sql
-- This file and its contents are licensed under the Timescale License.
-- Please see the included NOTICE for copyright information and
-- LICENSE-TIMESCALE for a copy of the license.
--------------------------
-- cheap rand generator --
--------------------------
create table rand_minstd_state(i bigint);
create function rand_minstd_advance(bigint) returns bigint
language sql immutable as
$$
	select (16807 * $1) % 2147483647
$$;
create function gen_rand_minstd() returns bigint
language sql security definer as
$$
	update rand_minstd_state set i = rand_minstd_advance(i) returning i
$$;
-- seed the random num generator
insert into rand_minstd_state values (321);
\c :TEST_DBNAME :ROLE_DEFAULT_PERM_USER
CREATE TABLE metric (i int);
insert into metric select i from generate_series(1, 10) i;
\set TYPE int
\set TABLE metric
\ir include/compression_test_segment_meta.sql
-- This file and its contents are licensed under the Timescale License.
-- Please see the included NOTICE for copyright information and
-- LICENSE-TIMESCALE for a copy of the license.
\set ECHO errors
 ?column? | ?column? 
----------+----------
 t        | t
(1 row)

----NULL tests
--First
truncate metric;
insert into metric select NULLIF(i,1) from generate_series(1, 10) i;
\ir include/compression_test_segment_meta.sql
-- This file and its contents are licensed under the Timescale License.
-- Please see the included NOTICE for copyright information and
-- LICENSE-TIMESCALE for a copy of the license.
\set ECHO errors
 ?column? | ?column? 
----------+----------
 t        | t
(1 row)

--Last
truncate metric;
insert into metric select NULLIF(i,10) from generate_series(1, 10) i;
\ir include/compression_test_segment_meta.sql
-- This file and its contents are licensed under the Timescale License.
-- Please see the included NOTICE for copyright information and
-- LICENSE-TIMESCALE for a copy of the license.
\set ECHO errors
 ?column? | ?column? 
----------+----------
 t        | t
(1 row)

--Middle
truncate metric;
insert into metric select NULLIF(i,5) from generate_series(1, 10) i;
\ir include/compression_test_segment_meta.sql
-- This file and its contents are licensed under the Timescale License.
-- Please see the included NOTICE for copyright information and
-- LICENSE-TIMESCALE for a copy of the license.
\set ECHO errors
 ?column? | ?column? 
----------+----------
 t        | t
(1 row)

--All NULLS should return null object
truncate metric;
insert into metric select NULL from generate_series(1, 10) i;
SELECT
     _timescaledb_internal.segment_meta_min_max_agg_min(i) is null,
     _timescaledb_internal.segment_meta_min_max_agg_max(i) is null
FROM metric;
 ?column? | ?column? 
----------+----------
 t        | t
(1 row)

--
--type tests
--
--untoasted text
CREATE TABLE base_texts AS SELECT
    repeat(item::text, 1) as i
    FROM
        (SELECT sub.item from
            (SELECT generate_series(1, 10) item) as sub
          ORDER BY gen_rand_minstd()
        ) sub;
\set TYPE text
\set TABLE base_texts
\ir include/compression_test_segment_meta.sql
-- This file and its contents are licensed under the Timescale License.
-- Please see the included NOTICE for copyright information and
-- LICENSE-TIMESCALE for a copy of the license.
\set ECHO errors
 ?column? | ?column? 
----------+----------
 t        | t
(1 row)

--toasted text
DROP TABLE base_texts;
CREATE TABLE base_texts AS SELECT
    repeat(item::text, 100000) as i
    FROM
        (SELECT sub.item from
            (SELECT generate_series(1, 10) item) as sub
          ORDER BY gen_rand_minstd()
        ) sub;
--make sure it's toasted
SELECT pg_total_relation_size(reltoastrelid)
      FROM pg_class c
      WHERE relname = 'base_texts';
 pg_total_relation_size 
------------------------
                  24576
(1 row)

\ir include/compression_test_segment_meta.sql
-- This file and its contents are licensed under the Timescale License.
-- Please see the included NOTICE for copyright information and
-- LICENSE-TIMESCALE for a copy of the license.
\set ECHO errors
 ?column? | ?column? 
----------+----------
 t        | t
(1 row)

--name is a fixed-length pass by reference type
CREATE TABLE base_name AS SELECT
    item::name as i
    FROM
        (SELECT sub.item from
            (SELECT generate_series(1, 10) item) as sub
          ORDER BY gen_rand_minstd()
        ) sub;
\set TYPE name
\set TABLE base_name
\ir include/compression_test_segment_meta.sql
-- This file and its contents are licensed under the Timescale License.
-- Please see the included NOTICE for copyright information and
-- LICENSE-TIMESCALE for a copy of the license.
\set ECHO errors
 ?column? | ?column? 
----------+----------
 t        | t
(1 row)

--array
CREATE TABLE text_array AS SELECT
    array[item::text, 'abab'] as i
    FROM
        (SELECT sub.item from
            (SELECT generate_series(1, 10) item) as sub
          ORDER BY gen_rand_minstd()
        ) sub;
\set TYPE text[]
\set TABLE text_array
\ir include/compression_test_segment_meta.sql
-- This file and its contents are licensed under the Timescale License.
-- Please see the included NOTICE for copyright information and
-- LICENSE-TIMESCALE for a copy of the license.
\set ECHO errors
 ?column? | ?column? 
----------+----------
 t        | t
(1 row)

--Points doesn't have an ordering so make sure it errors
CREATE TABLE points AS SELECT
    point '(0,1)' as i
    FROM
        (SELECT sub.item from
            (SELECT generate_series(1, 10) item) as sub
          ORDER BY gen_rand_minstd()
        ) sub;
\set ON_ERROR_STOP 0
SELECT
     _timescaledb_internal.segment_meta_min_max_agg_max(i)
FROM points;
ERROR:  could not identify an less-than operator for type point
SELECT
     _timescaledb_internal.segment_meta_min_max_agg_min(i)
FROM points;
ERROR:  could not identify an less-than operator for type point
\set ON_ERROR_STOP 1