# name: test/optimizer/date_trunc_simplification_icu.test
# description: test DATE_TRUNC() constant simplifications that require icu
# group: [optimizer]

require icu

statement ok
PRAGMA enable_verification;

statement ok
set Calendar='gregorian';

#
# check operation with hour offsets that aren't complete hours
#

statement ok
create table test(d TIMESTAMPTZ);

statement ok
insert into test values ('2025-01-01 01:01:00+02:10'), ('2025-01-10 19:00:00-06:45');

statement ok
set timezone='utc';

query I
select * from test where date_trunc('day', d) < '2025-01-01'::TIMESTAMPTZ;
----
2024-12-31 22:51:00+00

query I
select * from test where date_trunc('day', d) >= '2025-01-01'::TIMESTAMPTZ;
----
2025-01-11 01:45:00+00

query I
select * from test where date_trunc('day', d) <= '2025-01-10'::TIMESTAMPTZ;
----
2024-12-31 22:51:00+00

query I
select * from test where date_trunc('day', d) > '2025-01-10'::TIMESTAMPTZ;
----
2025-01-11 01:45:00+00

#
# check correctness on DST edge cases using the St. Johns timezone
#

statement ok
set TimeZone='America/St_Johns';

statement ok
create table test2(d TIMESTAMPTZ);

statement ok
insert into test2 values ('2025-03-09T01:05:00'),
                         ('2025-03-09T03:05:00'),
                         ('2025-11-02T00:30:00'),
                         ('2025-11-02T01:30:00');

query I
select * from test2 where date_trunc('hour', d) < '2025-03-09T05:00:00+00'::TIMESTAMPTZ;
----
2025-03-09 01:05:00-03:30

query I
select * from test2 where date_trunc('hour', d) <= '2025-03-09T05:30:00+00'::TIMESTAMPTZ;
----
2025-03-09 01:05:00-03:30
2025-03-09 03:05:00-02:30

query I
select * from test2 where date_trunc('hour', d) > '2025-11-02T03:30:00+00'::TIMESTAMPTZ;
----
2025-11-02 01:30:00-03:30

query I
select * from test2 where date_trunc('hour', d) > '2025-11-02T02:30:00+00'::TIMESTAMPTZ;
----
2025-11-02 01:30:00-03:30

query I
select * from test2 where date_trunc('hour', d) >= '2025-11-02T02:30:00+00'::TIMESTAMPTZ;
----
2025-11-02 00:30:00-02:30
2025-11-02 01:30:00-03:30