---
1	one	-1	een
2	two	-2	twee
3	three	-3	drie
4	four	-4	vier
5	five	-5	vijf
---
5
---
1
1
1
1
1
---
1
2
3
4
5
---
-5	five
-4	four
-1	one
-3	three
-2	two
---
-3	three
-1	one
-2	two
-4	four
-5	five
---
-1
-3
-4
-5
---
4
QUERY id: 0
  PROJECTION COLUMNS
    key String
    a String
    b String
    c String
  PROJECTION
    LIST id: 1, nodes: 4
      COLUMN id: 2, column_name: key, result_type: String, source_id: 3
      COLUMN id: 4, column_name: a, result_type: String, source_id: 3
      COLUMN id: 5, column_name: b, result_type: String, source_id: 3
      COLUMN id: 6, column_name: c, result_type: String, source_id: 3
  JOIN TREE
    TABLE_FUNCTION id: 3, table_function_name: mysql
      ARGUMENTS
        LIST id: 7, nodes: 5
          CONSTANT id: 8, constant_value: \'127.0.0.1:9004\', constant_value_type: String
          CONSTANT id: 9, constant_value: \'default\', constant_value_type: String
            EXPRESSION
              FUNCTION id: 10, function_name: currentDatabase, function_type: ordinary, result_type: String
          IDENTIFIER id: 11, identifier: foo
          CONSTANT id: 12, constant_value: \'default\', constant_value_type: String
          CONSTANT id: 13, constant_value: \'\', constant_value_type: String
      SETTINGS connection_wait_timeout=123 connect_timeout=40123002 read_write_timeout=40123001 connection_pool_size=3

SELECT
    key AS key,
    a AS a,
    b AS b,
    c AS c
FROM mysql(\'127.0.0.1:9004\', \'default\', foo, \'default\', \'\', SETTINGS connection_wait_timeout = 123, connect_timeout = 40123002, read_write_timeout = 40123001, connection_pool_size = 3)
---
5