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35 lines
665 B
MySQL
35 lines
665 B
MySQL
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SET join_use_nulls = 1;
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SELECT * FROM
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(
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SELECT number, ['left'] as ar, number AS left_number FROM system.numbers LIMIT 2
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)
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FULL JOIN
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(
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SELECT number, ['right'] as ar, number AS right_number FROM system.numbers LIMIT 1, 2
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)
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USING (number)
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ORDER BY number;
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SELECT * FROM
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(
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SELECT ['left'] as ar, number AS left_number FROM system.numbers LIMIT 2
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)
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FULL JOIN
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(
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SELECT ['right'] as ar, number AS right_number FROM system.numbers LIMIT 1, 2
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)
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ON left_number = right_number
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ORDER BY left_number;
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SELECT * FROM
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(
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SELECT ['left'] as ar, 42 AS left_number
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)
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FULL JOIN
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(
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SELECT ['right'] as ar, 42 AS right_number
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)
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USING(ar)
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ORDER BY left_number;
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