mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-24 08:32:02 +00:00
141 lines
8.1 KiB
SQL
141 lines
8.1 KiB
SQL
/* Condition could be:
|
|
* - constant, true
|
|
* - constant, false
|
|
* - constant, NULL
|
|
* - non constant, non nullable
|
|
* - non constant, nullable
|
|
*
|
|
* Then and else could be:
|
|
* - constant, not NULL
|
|
* - constant, NULL
|
|
* - non constant, non nullable
|
|
* - non constant, nullable
|
|
*
|
|
* Thus we have 5 * 4 * 4 = 80 combinations.
|
|
*/
|
|
|
|
DROP TABLE IF EXISTS test.nullable;
|
|
|
|
CREATE VIEW test.nullable
|
|
AS SELECT
|
|
1 AS constant_true,
|
|
0 AS constant_false,
|
|
NULL AS constant_null,
|
|
number % 3 = 1 AS cond_non_constant,
|
|
number % 3 = 2 ? NULL : (number % 3 = 1) AS cond_non_constant_nullable,
|
|
'Hello' AS then_constant,
|
|
'World' AS else_constant,
|
|
toString(number) AS then_non_constant,
|
|
toString(-number) AS else_non_constant,
|
|
nullIf(toString(number), '5') AS then_non_constant_nullable,
|
|
nullIf(toString(-number), '-5') AS else_non_constant_nullable
|
|
FROM system.numbers LIMIT 10;
|
|
|
|
|
|
SELECT constant_true ? then_constant : else_constant AS res FROM test.nullable;
|
|
SELECT constant_true ? then_constant : constant_null AS res FROM test.nullable;
|
|
SELECT constant_true ? then_constant : else_non_constant AS res FROM test.nullable;
|
|
SELECT constant_true ? then_constant : else_non_constant_nullable AS res FROM test.nullable;
|
|
|
|
SELECT constant_true ? constant_null : else_constant AS res FROM test.nullable;
|
|
SELECT constant_true ? constant_null : constant_null AS res FROM test.nullable;
|
|
SELECT constant_true ? constant_null : else_non_constant AS res FROM test.nullable;
|
|
SELECT constant_true ? constant_null : else_non_constant_nullable AS res FROM test.nullable;
|
|
|
|
SELECT constant_true ? then_non_constant : else_constant AS res FROM test.nullable;
|
|
SELECT constant_true ? then_non_constant : constant_null AS res FROM test.nullable;
|
|
SELECT constant_true ? then_non_constant : else_non_constant AS res FROM test.nullable;
|
|
SELECT constant_true ? then_non_constant : else_non_constant_nullable AS res FROM test.nullable;
|
|
|
|
SELECT constant_true ? then_non_constant_nullable : else_constant AS res FROM test.nullable;
|
|
SELECT constant_true ? then_non_constant_nullable : constant_null AS res FROM test.nullable;
|
|
SELECT constant_true ? then_non_constant_nullable : else_non_constant AS res FROM test.nullable;
|
|
SELECT constant_true ? then_non_constant_nullable : else_non_constant_nullable AS res FROM test.nullable;
|
|
|
|
|
|
SELECT constant_false ? then_constant : else_constant AS res FROM test.nullable;
|
|
SELECT constant_false ? then_constant : constant_null AS res FROM test.nullable;
|
|
SELECT constant_false ? then_constant : else_non_constant AS res FROM test.nullable;
|
|
SELECT constant_false ? then_constant : else_non_constant_nullable AS res FROM test.nullable;
|
|
|
|
SELECT constant_false ? constant_null : else_constant AS res FROM test.nullable;
|
|
SELECT constant_false ? constant_null : constant_null AS res FROM test.nullable;
|
|
SELECT constant_false ? constant_null : else_non_constant AS res FROM test.nullable;
|
|
SELECT constant_false ? constant_null : else_non_constant_nullable AS res FROM test.nullable;
|
|
|
|
SELECT constant_false ? then_non_constant : else_constant AS res FROM test.nullable;
|
|
SELECT constant_false ? then_non_constant : constant_null AS res FROM test.nullable;
|
|
SELECT constant_false ? then_non_constant : else_non_constant AS res FROM test.nullable;
|
|
SELECT constant_false ? then_non_constant : else_non_constant_nullable AS res FROM test.nullable;
|
|
|
|
SELECT constant_false ? then_non_constant_nullable : else_constant AS res FROM test.nullable;
|
|
SELECT constant_false ? then_non_constant_nullable : constant_null AS res FROM test.nullable;
|
|
SELECT constant_false ? then_non_constant_nullable : else_non_constant AS res FROM test.nullable;
|
|
SELECT constant_false ? then_non_constant_nullable : else_non_constant_nullable AS res FROM test.nullable;
|
|
|
|
|
|
SELECT constant_null ? then_constant : else_constant AS res FROM test.nullable;
|
|
SELECT constant_null ? then_constant : constant_null AS res FROM test.nullable;
|
|
SELECT constant_null ? then_constant : else_non_constant AS res FROM test.nullable;
|
|
SELECT constant_null ? then_constant : else_non_constant_nullable AS res FROM test.nullable;
|
|
|
|
SELECT constant_null ? constant_null : else_constant AS res FROM test.nullable;
|
|
SELECT constant_null ? constant_null : constant_null AS res FROM test.nullable;
|
|
SELECT constant_null ? constant_null : else_non_constant AS res FROM test.nullable;
|
|
SELECT constant_null ? constant_null : else_non_constant_nullable AS res FROM test.nullable;
|
|
|
|
SELECT constant_null ? then_non_constant : else_constant AS res FROM test.nullable;
|
|
SELECT constant_null ? then_non_constant : constant_null AS res FROM test.nullable;
|
|
SELECT constant_null ? then_non_constant : else_non_constant AS res FROM test.nullable;
|
|
SELECT constant_null ? then_non_constant : else_non_constant_nullable AS res FROM test.nullable;
|
|
|
|
SELECT constant_null ? then_non_constant_nullable : else_constant AS res FROM test.nullable;
|
|
SELECT constant_null ? then_non_constant_nullable : constant_null AS res FROM test.nullable;
|
|
SELECT constant_null ? then_non_constant_nullable : else_non_constant AS res FROM test.nullable;
|
|
SELECT constant_null ? then_non_constant_nullable : else_non_constant_nullable AS res FROM test.nullable;
|
|
|
|
|
|
SELECT cond_non_constant ? then_constant : else_constant AS res FROM test.nullable;
|
|
SELECT cond_non_constant ? then_constant : constant_null AS res FROM test.nullable;
|
|
SELECT cond_non_constant ? then_constant : else_non_constant AS res FROM test.nullable;
|
|
SELECT cond_non_constant ? then_constant : else_non_constant_nullable AS res FROM test.nullable;
|
|
|
|
SELECT cond_non_constant ? constant_null : else_constant AS res FROM test.nullable;
|
|
SELECT cond_non_constant ? constant_null : constant_null AS res FROM test.nullable;
|
|
SELECT cond_non_constant ? constant_null : else_non_constant AS res FROM test.nullable;
|
|
SELECT cond_non_constant ? constant_null : else_non_constant_nullable AS res FROM test.nullable;
|
|
|
|
SELECT cond_non_constant ? then_non_constant : else_constant AS res FROM test.nullable;
|
|
SELECT cond_non_constant ? then_non_constant : constant_null AS res FROM test.nullable;
|
|
SELECT cond_non_constant ? then_non_constant : else_non_constant AS res FROM test.nullable;
|
|
SELECT cond_non_constant ? then_non_constant : else_non_constant_nullable AS res FROM test.nullable;
|
|
|
|
SELECT cond_non_constant ? then_non_constant_nullable : else_constant AS res FROM test.nullable;
|
|
SELECT cond_non_constant ? then_non_constant_nullable : constant_null AS res FROM test.nullable;
|
|
SELECT cond_non_constant ? then_non_constant_nullable : else_non_constant AS res FROM test.nullable;
|
|
SELECT cond_non_constant ? then_non_constant_nullable : else_non_constant_nullable AS res FROM test.nullable;
|
|
|
|
|
|
SELECT cond_non_constant_nullable ? then_constant : else_constant AS res FROM test.nullable;
|
|
SELECT cond_non_constant_nullable ? then_constant : constant_null AS res FROM test.nullable;
|
|
SELECT cond_non_constant_nullable ? then_constant : else_non_constant AS res FROM test.nullable;
|
|
SELECT cond_non_constant_nullable ? then_constant : else_non_constant_nullable AS res FROM test.nullable;
|
|
|
|
SELECT cond_non_constant_nullable ? constant_null : else_constant AS res FROM test.nullable;
|
|
SELECT cond_non_constant_nullable ? constant_null : constant_null AS res FROM test.nullable;
|
|
SELECT cond_non_constant_nullable ? constant_null : else_non_constant AS res FROM test.nullable;
|
|
SELECT cond_non_constant_nullable ? constant_null : else_non_constant_nullable AS res FROM test.nullable;
|
|
|
|
SELECT cond_non_constant_nullable ? then_non_constant : else_constant AS res FROM test.nullable;
|
|
SELECT cond_non_constant_nullable ? then_non_constant : constant_null AS res FROM test.nullable;
|
|
SELECT cond_non_constant_nullable ? then_non_constant : else_non_constant AS res FROM test.nullable;
|
|
SELECT cond_non_constant_nullable ? then_non_constant : else_non_constant_nullable AS res FROM test.nullable;
|
|
|
|
SELECT cond_non_constant_nullable ? then_non_constant_nullable : else_constant AS res FROM test.nullable;
|
|
SELECT cond_non_constant_nullable ? then_non_constant_nullable : constant_null AS res FROM test.nullable;
|
|
SELECT cond_non_constant_nullable ? then_non_constant_nullable : else_non_constant AS res FROM test.nullable;
|
|
SELECT cond_non_constant_nullable ? then_non_constant_nullable : else_non_constant_nullable AS res FROM test.nullable;
|
|
|
|
|
|
DROP TABLE test.nullable;
|