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