-- 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.

-- Need to be super user to create extension and add data nodes
\c :TEST_DBNAME :ROLE_CLUSTER_SUPERUSER;
\ir include/remote_exec.sql

SET ROLE :ROLE_1;
\set TEST_TABLE 'conditions'
\ir 'include/aggregate_table_create.sql'

SET ROLE :ROLE_CLUSTER_SUPERUSER;
\set DATA_NODE_1 :TEST_DBNAME _1
\set DATA_NODE_2 :TEST_DBNAME _2
\set DATA_NODE_3 :TEST_DBNAME _3

-- Add data nodes using the TimescaleDB node management API
SELECT node_name, database, node_created, database_created, extension_created
FROM (
  SELECT (add_data_node(name, host => 'localhost', DATABASE => name)).*
  FROM (VALUES (:'DATA_NODE_1'), (:'DATA_NODE_2'), (:'DATA_NODE_3')) v(name)
) a;
GRANT USAGE ON FOREIGN SERVER :DATA_NODE_1, :DATA_NODE_2, :DATA_NODE_3 TO :ROLE_1;

SELECT * FROM test.remote_exec('{ db_dist_partial_agg_1, db_dist_partial_agg_2, db_dist_partial_agg_3}',
$$
       CREATE TYPE custom_type AS (high int, low int);
$$);

SET ROLE :ROLE_1;
SELECT table_name FROM create_distributed_hypertable( 'conditions', 'timec', 'location', 3, chunk_time_interval => INTERVAL '1 day');

-- We need a lot of data and a lot of chunks to make the planner push down all of the aggregates
\ir 'include/aggregate_table_populate.sql'

SET enable_partitionwise_aggregate = ON;
SET timescaledb.remote_data_fetcher = 'cursor';

-- Run an explain on the aggregate queries to make sure expected aggregates are being pushed down.
-- Grouping by the paritioning column should result in full aggregate pushdown where possible,
-- while using a non-partitioning column should result in a partial pushdown
\set PREFIX 'EXPLAIN (VERBOSE, COSTS OFF)'

\set GROUPING 'location'
\ir 'include/aggregate_queries.sql'

\set GROUPING 'region, temperature'
\ir 'include/aggregate_queries.sql'

-- Full aggregate pushdown correctness check, compare location grouped query results with partionwise aggregates on and off
\set GROUPING 'location'
SELECT format('%s/results/dist_agg_loc_results_test.out', :'TEST_OUTPUT_DIR') as "RESULTS_TEST1",
       format('%s/results/dist_agg_loc_results_control.out', :'TEST_OUTPUT_DIR') as "RESULTS_CONTROL1"
\gset
SELECT format('\! diff %s %s', :'RESULTS_CONTROL1', :'RESULTS_TEST1') as "DIFF_CMD1"
\gset

--generate the results into two different files
\set ECHO errors
SET client_min_messages TO error;
--make output contain query results
\set PREFIX ''
\o :RESULTS_CONTROL1
SET enable_partitionwise_aggregate = OFF;
\ir 'include/aggregate_queries.sql'
\o
\o :RESULTS_TEST1
SET enable_partitionwise_aggregate = ON;
\ir 'include/aggregate_queries.sql'
\o
\set ECHO all

:DIFF_CMD1

-- Partial aggregate pushdown correctness check, compare region grouped query results with partionwise aggregates on and off
\set GROUPING 'region'
SELECT format('%s/results/dist_agg_region_results_test.out', :'TEST_OUTPUT_DIR') as "RESULTS_TEST2",
       format('%s/results/dist_agg_region_results_control.out', :'TEST_OUTPUT_DIR') as "RESULTS_CONTROL2"
\gset
SELECT format('\! diff %s %s', :'RESULTS_CONTROL2', :'RESULTS_TEST2') as "DIFF_CMD2"
\gset

--generate the results into two different files
\set ECHO errors
SET client_min_messages TO error;
--make output contain query results
\set PREFIX ''
\o :RESULTS_CONTROL2
SET enable_partitionwise_aggregate = OFF;
\ir 'include/aggregate_queries.sql'
\o
\o :RESULTS_TEST2
SET enable_partitionwise_aggregate = ON;
CALL distributed_exec($$ SET enable_partitionwise_aggregate = ON $$);
\ir 'include/aggregate_queries.sql'
\o
\set ECHO all

:DIFF_CMD2

\c :TEST_DBNAME :ROLE_CLUSTER_SUPERUSER
DROP DATABASE :DATA_NODE_1;
DROP DATABASE :DATA_NODE_2;
DROP DATABASE :DATA_NODE_3;