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22 lines
851 B
MySQL
22 lines
851 B
MySQL
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DROP TABLE IF EXISTS sparse_tuple;
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CREATE TABLE sparse_tuple (id UInt64, t Tuple(a UInt64, s String))
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ENGINE = MergeTree ORDER BY tuple()
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SETTINGS min_bytes_for_wide_part = 0, ratio_for_sparse_serialization = 0.5;
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INSERT INTO sparse_tuple SELECT number, (if (number % 20 = 0, number, 0), repeat('a', number % 10 + 1)) FROM numbers(1000);
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SELECT t FROM sparse_tuple ORDER BY id LIMIT 5;
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SELECT t FROM sparse_tuple WHERE t.a != 0 ORDER BY id LIMIT 5;
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SELECT t FROM sparse_tuple WHERE t.a != 0 ORDER BY t.a LIMIT 5;
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SELECT t.a FROM sparse_tuple ORDER BY id LIMIT 5;
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SELECT t.a FROM sparse_tuple WHERE t.a != 0 ORDER BY id LIMIT 5;
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SELECT t.a FROM sparse_tuple WHERE t.a != 0 ORDER BY t.a LIMIT 5;
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SELECT t.s FROM sparse_tuple ORDER BY id LIMIT 5;
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SELECT t.s FROM sparse_tuple WHERE t.a != 0 ORDER BY id LIMIT 5;
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DROP TABLE IF EXISTS sparse_tuple;
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