ClickHouse/tests/queries/0_stateless/02662_first_last_value.reference
2023-04-20 09:28:49 +08:00

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-- { echo }
-- create table
drop table if exists test;
create table test(`a` Nullable(Int32), `b` Nullable(Int32)) ENGINE = Memory;
insert into test (a,b) values (1,null), (2,3), (4, 5), (6,null);
-- first value
select first_value(b) from test;
3
select first_value(b) ignore nulls from test;
3
select first_value(b) respect nulls from test;
\N
-- last value
select last_value(b) from test;
5
select last_value(b) ignore nulls from test;
5
select last_value(true)(b) respect nulls from test;
\N