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51 lines
1.3 KiB
SQL
51 lines
1.3 KiB
SQL
SET allow_experimental_analyzer = 1;
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SELECT 'Aliases to constants';
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SELECT 1 as a, a;
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SELECT (c + 1) as d, (a + 1) as b, 1 AS a, (b + 1) as c, d;
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WITH 1 as a SELECT a;
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WITH a as b SELECT 1 as a, b;
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SELECT 1 AS x, x, x + 1;
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SELECT x, x + 1, 1 AS x;
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SELECT x, 1 + (2 + (3 AS x));
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SELECT a AS b, b AS a; -- { serverError 174 }
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DROP TABLE IF EXISTS test_table;
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CREATE TABLE test_table
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(
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id UInt64,
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value String
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) ENGINE=TinyLog;
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INSERT INTO test_table VALUES (0, 'Value');
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SELECT 'Aliases to columns';
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SELECT id_alias_2, id AS id_alias, id_alias as id_alias_2 FROM test_table;
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SELECT id_1, value_1, id as id_1, value as value_1 FROM test_table;
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WITH value_1 as value_2, id_1 as id_2, id AS id_1, value AS value_1 SELECT id_2, value_2 FROM test_table;
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SELECT (id + b) AS id, id as b FROM test_table; -- { serverError 174 }
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SELECT (1 + b + 1 + id) AS id, b as c, id as b FROM test_table; -- { serverError 174 }
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SELECT 'Alias conflict with identifier inside expression';
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SELECT id AS id FROM test_table;
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SELECT (id + 1) AS id FROM test_table;
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SELECT (id + 1 + 1 + 1 + id) AS id FROM test_table;
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SELECT 'Alias setting prefer_column_name_to_alias';
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WITH id AS value SELECT value FROM test_table;
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SET prefer_column_name_to_alias = 1;
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WITH id AS value SELECT value FROM test_table;
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SET prefer_column_name_to_alias = 0;
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DROP TABLE test_table;
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