mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-14 03:25:15 +00:00
30 lines
1.5 KiB
SQL
30 lines
1.5 KiB
SQL
drop table if exists test_prewhere_column_missing;
|
|
|
|
create table test_prewhere_column_missing (d Date default '2015-01-01', x UInt64) engine=MergeTree(d, x, 1);
|
|
|
|
insert into test_prewhere_column_missing (x) values (0);
|
|
select * from test_prewhere_column_missing;
|
|
|
|
alter table test_prewhere_column_missing add column arr Array(UInt64);
|
|
select * from test_prewhere_column_missing;
|
|
|
|
select *, arraySum(arr) as s from test_prewhere_column_missing;
|
|
select *, arraySum(arr) as s from test_prewhere_column_missing where s = 0;
|
|
select *, arraySum(arr) as s from test_prewhere_column_missing prewhere s = 0;
|
|
|
|
select *, length(arr) as l from test_prewhere_column_missing;
|
|
select *, length(arr) as l from test_prewhere_column_missing where l = 0;
|
|
select *, length(arr) as l from test_prewhere_column_missing prewhere l = 0;
|
|
|
|
alter table test_prewhere_column_missing add column hash_x default intHash64(x);
|
|
|
|
select * from test_prewhere_column_missing;
|
|
select * from test_prewhere_column_missing where hash_x = intHash64(x);
|
|
select * from test_prewhere_column_missing prewhere hash_x = intHash64(x);
|
|
select * from test_prewhere_column_missing where hash_x = intHash64(x) and length(arr) = 0;
|
|
select * from test_prewhere_column_missing prewhere hash_x = intHash64(x) and length(arr) = 0;
|
|
select * from test_prewhere_column_missing where hash_x = intHash64(x) and length(arr) = 0 and arraySum(arr) = 0;
|
|
select * from test_prewhere_column_missing prewhere hash_x = intHash64(x) and length(arr) = 0 and arraySum(arr) = 0;
|
|
|
|
drop table test_prewhere_column_missing;
|