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8 lines
321 B
MySQL
8 lines
321 B
MySQL
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DROP TABLE IF EXISTS prewhere;
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CREATE TABLE prewhere (light UInt8, heavy String) ENGINE = MergeTree ORDER BY tuple();
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INSERT INTO prewhere SELECT 0, randomPrintableASCII(10000) FROM numbers(10000);
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SELECT arrayJoin([light]) != 0 AS cond, length(heavy) FROM prewhere WHERE light != 0 AND cond != 0;
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DROP TABLE prewhere;
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