-- { echo }

drop table if exists tbl;
create table tbl (p Int64, t Int64, f Float64) Engine=MergeTree partition by p order by t settings index_granularity=1;
insert into tbl select number / 4, number, 0 from numbers(16);
select * from tbl WHERE indexHint(t = 1) order by t;
0	0	0
0	1	0
select * from tbl WHERE indexHint(t in (select toInt64(number) + 2 from numbers(3))) order by t;
0	1	0
0	2	0
0	3	0
1	4	0
select * from tbl WHERE indexHint(p = 2) order by t;
2	8	0
2	9	0
2	10	0
2	11	0
select * from tbl WHERE indexHint(p in (select toInt64(number) - 2 from numbers(3))) order by t;
0	0	0
0	1	0
0	2	0
0	3	0
drop table tbl;
drop table if exists XXXX;
create table XXXX (t Int64, f Float64) Engine=MergeTree order by t settings index_granularity=128;
insert into XXXX select number*60, 0 from numbers(100000);
SELECT sum(t) FROM XXXX WHERE indexHint(t = 42);
487680
drop table if exists XXXX;
create table XXXX (t Int64, f Float64) Engine=MergeTree order by t settings index_granularity=8192;
insert into XXXX select number*60, 0 from numbers(100000);
SELECT count() FROM XXXX WHERE indexHint(t = toDateTime(0)) SETTINGS optimize_use_implicit_projections = 1;
100000
drop table XXXX;
CREATE TABLE XXXX (p Nullable(Int64), k Decimal(76, 39)) ENGINE = MergeTree PARTITION BY toDate(p) ORDER BY k SETTINGS index_granularity = 1, allow_nullable_key = 1;
INSERT INTO XXXX FORMAT Values ('2020-09-01 00:01:02', 1), ('2020-09-01 20:01:03', 2), ('2020-09-02 00:01:03', 3);
SELECT count() FROM XXXX WHERE indexHint(p = 1.) SETTINGS optimize_use_implicit_projections = 1;
0
drop table XXXX;