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9 lines
445 B
MySQL
9 lines
445 B
MySQL
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SET allow_experimental_low_cardinality_type = 1;
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drop table if exists test.low_null_float;
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CREATE TABLE test.low_null_float (a LowCardinality(Nullable(Float64))) ENGINE = MergeTree order by tuple();
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INSERT INTO test.low_null_float (a) SELECT if(number % 3 == 0, Null, number) FROM system.numbers LIMIT 1000000;
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SELECT a, count() FROM test.low_null_float GROUP BY a ORDER BY count() desc, a LIMIT 10;
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drop table if exists test.low_null_float;
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