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15 lines
620 B
SQL
15 lines
620 B
SQL
DROP TABLE IF EXISTS sites;
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CREATE TABLE sites (Domain UInt8, `Users.UserID` Array(UInt64), `Users.Dates` Array(Array(Date))) ENGINE = MergeTree ORDER BY Domain SETTINGS vertical_merge_algorithm_min_rows_to_activate = 0, vertical_merge_algorithm_min_columns_to_activate = 0;
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SYSTEM STOP MERGES;
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INSERT INTO sites VALUES (1,[1],[[]]);
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INSERT INTO sites VALUES (2,[1],[['2018-06-22']]);
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SELECT count(), countArray(Users.Dates), countArrayArray(Users.Dates) FROM sites;
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SYSTEM START MERGES;
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OPTIMIZE TABLE sites FINAL;
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SELECT count(), countArray(Users.Dates), countArrayArray(Users.Dates) FROM sites;
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DROP TABLE sites;
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