mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-23 08:02:02 +00:00
46 lines
1.2 KiB
SQL
46 lines
1.2 KiB
SQL
SELECT '00000000-0000-01f8-9cb8-cb1b82fb3900' AS str, toUUID(str);
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SELECT toFixedString('00000000-0000-02f8-9cb8-cb1b82fb3900', 36) AS str, toUUID(str);
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SELECT '00000000-0000-03f8-9cb8-cb1b82fb3900' AS str, CAST(str, 'UUID');
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SELECT toFixedString('00000000-0000-04f8-9cb8-cb1b82fb3900', 36) AS str, CAST(str, 'UUID');
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DROP TABLE IF EXISTS uuid;
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CREATE TABLE IF NOT EXISTS uuid
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(
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created_at DateTime,
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id0 String,
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id1 FixedString(36)
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)
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ENGINE = MergeTree
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PARTITION BY toDate(created_at)
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ORDER BY (created_at);
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INSERT INTO uuid VALUES ('2018-01-01 01:02:03', '00000000-0000-05f8-9cb8-cb1b82fb3900', '00000000-0000-06f8-9cb8-cb1b82fb3900');
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ALTER TABLE uuid MODIFY COLUMN id0 UUID;
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ALTER TABLE uuid MODIFY COLUMN id1 UUID;
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SELECT id0, id1 FROM uuid;
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SELECT toTypeName(id0), toTypeName(id1) FROM uuid;
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DROP TABLE uuid;
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-- with UUID in key
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CREATE TABLE IF NOT EXISTS uuid
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(
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created_at DateTime,
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id0 String,
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id1 FixedString(36)
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)
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ENGINE = MergeTree
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PARTITION BY toDate(created_at)
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ORDER BY (created_at, id0, id1);
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SET send_logs_level = 'none';
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ALTER TABLE uuid MODIFY COLUMN id0 UUID; -- { serverError 44 }
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ALTER TABLE uuid MODIFY COLUMN id1 UUID; -- { serverError 44 }
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DROP TABLE uuid;
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