ClickHouse/tests/queries/0_stateless/03033_recursive_cte_basic.sql
2024-08-05 15:29:14 +00:00

44 lines
1.5 KiB
SQL

-- { echoOn }
SET enable_analyzer = 1;
WITH RECURSIVE recursive_cte AS (SELECT 1 AS n UNION ALL SELECT n + 1 FROM recursive_cte WHERE n < 10)
SELECT n FROM recursive_cte;
SELECT '--';
WITH RECURSIVE recursive_cte AS (SELECT toUInt8(1) AS n UNION ALL SELECT toUInt8(n + 1) FROM recursive_cte WHERE n < 10)
SELECT n FROM recursive_cte;
SELECT '--';
WITH RECURSIVE recursive_cte AS (SELECT toUInt16(1) AS n UNION ALL SELECT toUInt8(n + 1) FROM recursive_cte WHERE n < 10)
SELECT n FROM recursive_cte;
SELECT '--';
WITH RECURSIVE recursive_cte AS (SELECT materialize(toUInt16(1)) AS n UNION ALL SELECT toUInt8(n + 1) FROM recursive_cte WHERE n < 10)
SELECT n FROM recursive_cte;
SELECT '--';
WITH RECURSIVE recursive_cte AS (SELECT toUInt16(1) AS n UNION ALL SELECT materialize(toUInt8(n + 1)) FROM recursive_cte WHERE n < 10)
SELECT n FROM recursive_cte;
SELECT '--';
WITH RECURSIVE recursive_cte AS (SELECT toUInt16(1) AS n, '1' AS concat UNION ALL SELECT materialize(toUInt8(n + 1)), concat || toString(n + 1) FROM recursive_cte WHERE n < 10)
SELECT n, concat FROM recursive_cte;
SELECT '--';
WITH RECURSIVE recursive_cte AS (SELECT 1 AS n UNION ALL SELECT n + 1 FROM recursive_cte)
SELECT n FROM recursive_cte LIMIT 5;
SELECT '--';
WITH RECURSIVE recursive_cte AS (SELECT materialize(toUInt8(1)) AS n UNION ALL SELECT materialize(toUInt8(n + 1)) FROM recursive_cte WHERE n < 10)
SELECT n FROM recursive_cte FORMAT Null SETTINGS max_recursive_cte_evaluation_depth = 5; -- { serverError TOO_DEEP_RECURSION }
-- { echoOff }