ClickHouse/tests/queries/0_stateless/01656_join_defaul_enum.sql

CREATE TABLE table_key (keycol UInt16) ENGINE = MergeTree() ORDER BY (keycol) PARTITION BY tuple()
as SELECT * FROM VALUES ( (1), (2), (3) );

CREATE TABLE table_with_enum (keycol UInt16, enum_col Enum8('First' = 1,'Second' = 2))
    ENGINE = MergeTree() ORDER BY (keycol) PARTITION BY tuple() 
as SELECT * FROM VALUES ( (2, 'Second'), (4, 'Second') );

SET join_algorithm = 'hash';

SELECT keycol, enum_col FROM table_key LEFT JOIN table_with_enum USING (keycol) ORDER BY keycol;
SELECT keycol, enum_col FROM table_key FULL JOIN table_with_enum USING (keycol) ORDER BY keycol;
SELECT keycol, enum_col FROM table_key RIGHT JOIN table_with_enum USING (keycol) ORDER BY keycol;

SELECT keycol, enum_col FROM table_with_enum LEFT JOIN table_key USING (keycol) ORDER BY keycol;
SELECT keycol, enum_col FROM table_with_enum RIGHT JOIN table_key USING (keycol) ORDER BY keycol;
SELECT keycol, enum_col FROM table_with_enum FULL JOIN table_key USING (keycol) ORDER BY keycol;

SET join_algorithm = 'partial_merge';

SELECT keycol, enum_col FROM table_key LEFT JOIN table_with_enum USING (keycol) ORDER BY keycol;
SELECT keycol, enum_col FROM table_key FULL JOIN table_with_enum USING (keycol) ORDER BY keycol;
SELECT keycol, enum_col FROM table_key RIGHT JOIN table_with_enum USING (keycol) ORDER BY keycol;

SELECT keycol, enum_col FROM table_with_enum LEFT JOIN table_key USING (keycol) ORDER BY keycol;
SELECT keycol, enum_col FROM table_with_enum RIGHT JOIN table_key USING (keycol) ORDER BY keycol;
SELECT keycol, enum_col FROM table_with_enum FULL JOIN table_key USING (keycol) ORDER BY keycol;

DROP TABLE table_key;
DROP TABLE table_with_enum;