ClickHouse/dbms/tests/queries/0_stateless/00717_low_cardinaliry_distributed_group_by.sql

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2019-05-29 14:59:11 +00:00
SET allow_suspicious_low_cardinality_types = true;
2018-11-21 18:39:24 +00:00
DROP TABLE IF EXISTS test.test_low_null_float;
DROP TABLE IF EXISTS test.dist;
CREATE TABLE test.test_low_null_float (a LowCardinality(Nullable(Float64))) ENGINE = Memory;
CREATE TABLE test.dist (a LowCardinality(Nullable(Float64))) ENGINE = Distributed('test_cluster_two_shards_localhost', 'test', 'test_low_null_float', rand());
INSERT INTO test.dist (a) SELECT number FROM system.numbers LIMIT 1000000;
SELECT a, count() FROM test.dist GROUP BY a ORDER BY a ASC, count() ASC LIMIT 10;
DROP TABLE IF EXISTS test.test_low_null_float;
DROP TABLE IF EXISTS test.dist;