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19 lines
816 B
SQL
19 lines
816 B
SQL
CREATE TEMPORARY TABLE sessions (date DateTime, visitorId String, sessionId String);
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CREATE TEMPORARY TABLE orders (date DateTime, visitorId String, orderId String);
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INSERT INTO sessions VALUES ('2018-01-01 00:00:00', 'v1', 's1'), ('2018-01-02 00:00:00', 'v1', 's2'), ('2018-01-03 00:00:00', 'v2', 's3'), ('2018-01-04 00:00:00', 'v1', 's4'), ('2018-01-05 00:00:00', 'v2', 's5'), ('2018-01-06 00:00:00', 'v3', 's6');
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INSERT INTO orders VALUES ('2018-01-03 00:00:00', 'v1', 'o1'), ('2018-01-05 00:00:00', 'v1', 'o2'), ('2018-01-06 00:00:00', 'v2', 'o3');
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SELECT
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visitorId,
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orderId,
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groupUniqArray(sessionId)
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FROM sessions
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ASOF INNER JOIN orders ON (sessions.visitorId = orders.visitorId) AND (sessions.date <= orders.date)
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GROUP BY
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visitorId,
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orderId
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ORDER BY
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visitorId ASC,
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orderId ASC;
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