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19 lines
549 B
MySQL
19 lines
549 B
MySQL
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DROP TABLE IF EXISTS t_sparse_reload;
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CREATE TABLE t_sparse_reload (id UInt64, v UInt64)
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ENGINE = MergeTree ORDER BY id
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SETTINGS ratio_of_defaults_for_sparse_serialization = 0.95;
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INSERT INTO t_sparse_reload SELECT number, 0 FROM numbers(100000);
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SELECT count() FROM t_sparse_reload WHERE NOT ignore(*);
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ALTER TABLE t_sparse_reload MODIFY SETTING ratio_of_defaults_for_sparse_serialization = 1.0;
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DETACH TABLE t_sparse_reload;
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ATTACH TABLE t_sparse_reload;
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SELECT count() FROM t_sparse_reload WHERE NOT ignore(*);
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DROP TABLE t_sparse_reload;
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