citus/src/test/regress/sql/full_join.sql

116 lines
3.9 KiB
SQL

--
-- Full join with subquery pushdown support
--
SET citus.next_shard_id TO 9000000;
CREATE SCHEMA full_join;
SET search_path TO full_join, public;
CREATE TABLE test_table_1(id int, val1 int);
CREATE TABLE test_table_2(id bigint, val1 int);
CREATE TABLE test_table_3(id int, val1 bigint);
SELECT create_distributed_table('test_table_1', 'id');
SELECT create_distributed_table('test_table_2', 'id');
SELECT create_distributed_table('test_table_3', 'id');
INSERT INTO test_table_1 VALUES(1,1),(2,2),(3,3);
INSERT INTO test_table_2 VALUES(2,2),(3,3),(4,4);
INSERT INTO test_table_3 VALUES(1,1),(3,3),(4,5);
-- Simple full outer join
SELECT id FROM test_table_1 FULL JOIN test_table_3 using(id) ORDER BY 1;
-- Get all columns as the result of the full join
SELECT * FROM test_table_1 FULL JOIN test_table_3 using(id) ORDER BY 1;
-- Join subqueries using single column
SELECT * FROM
(SELECT test_table_1.id FROM test_table_1 FULL JOIN test_table_3 using(id)) as j1
FULL JOIN
(SELECT test_table_1.id FROM test_table_1 FULL JOIN test_table_3 using(id)) as j2
USING(id)
ORDER BY 1;
-- Join subqueries using multiple columns
SELECT * FROM
(SELECT test_table_1.id, test_table_1.val1 FROM test_table_1 FULL JOIN test_table_3 using(id)) as j1
FULL JOIN
(SELECT test_table_1.id, test_table_1.val1 FROM test_table_1 FULL JOIN test_table_3 using(id)) as j2
USING(id, val1)
ORDER BY 1;
-- Full join using multiple columns
SELECT * FROM test_table_1 FULL JOIN test_table_3 USING(id, val1) ORDER BY 1;
-- Full join with complicated target lists
SELECT count(DISTINCT id), (avg(test_table_1.val1) + id * id)::integer as avg_value, id::numeric IS NOT NULL as not_null
FROM test_table_1 FULL JOIN test_table_3 using(id)
WHERE id::bigint < 55
GROUP BY id
ORDER BY 2
ASC LIMIT 3;
SELECT max(val1)
FROM test_table_1 FULL JOIN test_table_3 USING(id, val1)
GROUP BY test_table_1.id
ORDER BY 1;
-- Test the left join as well
SELECT max(val1)
FROM test_table_1 LEFT JOIN test_table_3 USING(id, val1)
GROUP BY test_table_1.id
ORDER BY 1;
-- Full outer join with different distribution column types, should error out
SELECT * FROM test_table_1 full join test_table_2 using(id);
-- Test when the non-distributed column has the value of NULL
INSERT INTO test_table_1 VALUES(7, NULL);
INSERT INTO test_table_2 VALUES(7, NULL);
INSERT INTO test_table_3 VALUES(7, NULL);
-- Get all columns as the result of the full join
SELECT * FROM test_table_1 FULL JOIN test_table_3 using(id) ORDER BY 1;
-- Get the same result (with multiple id)
SELECT * FROM test_table_1 FULL JOIN test_table_3 ON (test_table_1.id = test_table_3.id) ORDER BY 1;
-- Full join using multiple columns
SELECT * FROM test_table_1 FULL JOIN test_table_3 USING(id, val1) ORDER BY 1;
-- In order to make the same test with different data types use text-varchar pair
-- instead of using int-bigint pair.
DROP TABLE test_table_1;
DROP TABLE test_table_2;
DROP TABLE test_table_3;
CREATE TABLE test_table_1(id int, val1 text);
CREATE TABLE test_table_2(id int, val1 varchar(30));
SELECT create_distributed_table('test_table_1', 'id');
SELECT create_distributed_table('test_table_2', 'id');
INSERT INTO test_table_1 VALUES(1,'val_1'),(2,'val_2'),(3,'val_3'), (4, NULL);
INSERT INTO test_table_2 VALUES(2,'val_2'),(3,'val_3'),(4,'val_4'), (5, NULL);
-- Simple full outer join
SELECT id FROM test_table_1 FULL JOIN test_table_2 using(id) ORDER BY 1;
-- Get all columns as the result of the full join
SELECT * FROM test_table_1 FULL JOIN test_table_2 using(id) ORDER BY 1;
-- Join subqueries using multiple columns
SELECT * FROM
(SELECT test_table_1.id, test_table_1.val1 FROM test_table_1 FULL JOIN test_table_2 using(id)) as j1
FULL JOIN
(SELECT test_table_2.id, test_table_2.val1 FROM test_table_1 FULL JOIN test_table_2 using(id)) as j2
USING(id, val1)
ORDER BY 1,2;
-- Full join using multiple columns
SELECT * FROM test_table_1 FULL JOIN test_table_2 USING(id, val1) ORDER BY 1,2;
DROP SCHEMA full_join CASCADE;