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20 lines
649 B
MySQL
20 lines
649 B
MySQL
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-- Tags: long
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CREATE TABLE left ( key UInt32, value String ) ENGINE = MergeTree ORDER BY key;
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CREATE TABLE right ( key UInt32, value String ) ENGINE = MergeTree ORDER BY tuple();
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INSERT INTO left SELECT number, toString(number) FROM numbers(25367182);
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INSERT INTO right SELECT number, toString(number) FROM numbers(23124707);
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SET join_algorithm = 'partial_merge';
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SELECT key, count(1) AS cnt
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FROM (
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SELECT data.key
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FROM ( SELECT key FROM left AS s ) AS data
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LEFT JOIN ( SELECT key FROM right GROUP BY key ) AS promo ON promo.key = data.key
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) GROUP BY key HAVING count(1) > 1;
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DROP TABLE IF EXISTS left;
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DROP TABLE IF EXISTS right;
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