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26 lines
613 B
SQL
26 lines
613 B
SQL
DROP TABLE IF EXISTS table_with_pk;
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CREATE TABLE table_with_pk
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(
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key UInt8,
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value String
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)
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ENGINE = MergeTree
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ORDER BY key;
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INSERT INTO table_with_pk SELECT number, toString(number % 10) FROM numbers(10000000);
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ALTER TABLE table_with_pk DELETE WHERE key % 77 = 0 SETTINGS mutations_sync = 1;
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SYSTEM FLUSH LOGS;
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-- Memory usage for all mutations must be almost constant and less than
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-- read_bytes.
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SELECT
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DISTINCT read_bytes >= peak_memory_usage
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FROM
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system.part_log
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WHERE event_type = 'MutatePart' AND table = 'table_with_pk' AND database = currentDatabase();
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DROP TABLE IF EXISTS table_with_pk;
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