ClickHouse/dbms/tests/queries/0_stateless/00578_merge_table_sampling.sql
2019-06-07 19:02:24 +03:00

19 lines
728 B
SQL

DROP TABLE IF EXISTS numbers1;
DROP TABLE IF EXISTS numbers2;
CREATE TABLE numbers1 ENGINE = Memory AS SELECT number FROM numbers(1000);
CREATE TABLE numbers2 ENGINE = Memory AS SELECT number FROM numbers(1000);
SELECT * FROM merge(currentDatabase(), '^numbers\\d+$') SAMPLE 0.1; -- { serverError 141 }
DROP TABLE numbers1;
DROP TABLE numbers2;
CREATE TABLE numbers1 ENGINE = MergeTree ORDER BY intHash32(number) SAMPLE BY intHash32(number) AS SELECT number FROM numbers(1000);
CREATE TABLE numbers2 ENGINE = MergeTree ORDER BY intHash32(number) SAMPLE BY intHash32(number) AS SELECT number FROM numbers(1000);
SELECT * FROM merge(currentDatabase(), '^numbers\\d+$') SAMPLE 0.01;
DROP TABLE numbers1;
DROP TABLE numbers2;