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20 lines
507 B
SQL
20 lines
507 B
SQL
SET output_format_write_statistics = 0;
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SET experimental_use_processors = 0;
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select
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sum(cnt) > 0 as total,
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k[1], k[2]
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from
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(
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select
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arrayMap( x -> x % 3 ? toNullable(number%5 + x) : null, range(3)) as k,
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number % 4 ? toNullable( rand() ) : Null as cnt
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from system.numbers_mt
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where number < 1000000
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limit 1000000
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)
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group by k with totals
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order by total desc
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SETTINGS max_threads = 100, max_execution_time = 120
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format JSON;
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