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27 lines
978 B
SQL
27 lines
978 B
SQL
DROP TABLE IF EXISTS segfault;
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DROP TABLE IF EXISTS segfault_mv;
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CREATE TABLE segfault
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(
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id UInt32,
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uuid UUID,
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tags_ids Array(UInt32)
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) ENGINE = MergeTree()
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ORDER BY (id);
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CREATE MATERIALIZED VIEW segfault_mv
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ENGINE = AggregatingMergeTree()
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ORDER BY (id)
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AS SELECT
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id,
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uniqState(uuid) as uniq_uuids,
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uniqMapState(CAST((tags_ids, arrayMap(_ -> toString(uuid), tags_ids)), 'Map(UInt32, String)')) as uniq_tags_ids
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FROM segfault
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GROUP BY id;
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INSERT INTO segfault SELECT * FROM generateRandom('id UInt32, uuid UUID, c Array(UInt32)', 10, 5, 5) LIMIT 100;
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INSERT INTO segfault SELECT * FROM generateRandom('id UInt32, uuid UUID, c Array(UInt32)', 10, 5, 5) LIMIT 100;
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INSERT INTO segfault SELECT * FROM generateRandom('id UInt32, uuid UUID, c Array(UInt32)', 10, 5, 5) LIMIT 100;
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SELECT ignore(CAST((arrayMap(k -> toString(k), mapKeys(uniqMapMerge(uniq_tags_ids) AS m)), mapValues(m)), 'Map(String, UInt32)')) FROM segfault_mv;
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