mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-09-22 09:40:49 +00:00
46 lines
1.9 KiB
MySQL
46 lines
1.9 KiB
MySQL
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DROP TABLE IF EXISTS test;
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CREATE TABLE test (timestamp DateTime('UTC'), i UInt8) Engine=MergeTree() PARTITION BY toYYYYMM(timestamp) ORDER BY (i);
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INSERT INTO test values ('2020-05-13 16:38:45', 1);
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SELECT
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toTimeZone(timestamp, 'America/Sao_Paulo') AS converted,
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timestamp AS original
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FROM test
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LEFT JOIN (SELECT 2 AS x) AS anything ON x = i
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WHERE timestamp >= toDateTime('2020-05-13T00:00:00', 'America/Sao_Paulo');
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/* This was incorrect result in previous ClickHouse versions:
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┌─converted───────────┬─original────────────┐
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│ 2020-05-13 16:38:45 │ 2020-05-13 16:38:45 │ <-- toTimeZone is ignored.
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└─────────────────────┴─────────────────────┘
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*/
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SELECT
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toTimeZone(timestamp, 'America/Sao_Paulo') AS converted,
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timestamp AS original
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FROM test
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-- LEFT JOIN (SELECT 2 AS x) AS anything ON x = i -- Removing the join fixes the issue.
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WHERE timestamp >= toDateTime('2020-05-13T00:00:00', 'America/Sao_Paulo');
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/*
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┌─converted───────────┬─original────────────┐
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│ 2020-05-13 13:38:45 │ 2020-05-13 16:38:45 │ <-- toTimeZone works.
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└─────────────────────┴─────────────────────┘
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*/
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SELECT
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toTimeZone(timestamp, 'America/Sao_Paulo') AS converted,
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timestamp AS original
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FROM test
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LEFT JOIN (SELECT 2 AS x) AS anything ON x = i
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WHERE timestamp >= '2020-05-13T00:00:00'; -- Not using toDateTime in the WHERE also fixes the issue.
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/*
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┌─converted───────────┬─original────────────┐
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│ 2020-05-13 13:38:45 │ 2020-05-13 16:38:45 │ <-- toTimeZone works.
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└─────────────────────┴─────────────────────┘
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*/
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DROP TABLE test;
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