mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-25 09:02:00 +00:00
8 lines
389 B
SQL
8 lines
389 B
SQL
-- Tags: no-tsan, no-asan, no-ubsan, no-msan, no-debug
|
|
drop table if exists tab_lc;
|
|
CREATE TABLE tab_lc (x UInt64, y LowCardinality(String)) engine = MergeTree order by x;
|
|
insert into tab_lc select number, toString(number % 10) from numbers(20000000);
|
|
optimize table tab_lc;
|
|
select count() from tab_lc where y == '0' settings local_filesystem_read_prefetch=1;
|
|
drop table if exists tab_lc;
|