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# name: test/optimizer/timestamp_comparisons.test
# description: timestampt comparisons should be correct
# group: [optimizer]
require icu
statement ok
create table t (t timestamptz);
statement ok
SET TimeZone='ECT';
statement ok
SET CALENDAR='gregorian';
statement ok
insert into t values('2028-02-28 01:00:00');
# EQUAL is affected (and LOWER, GREATER too)
query I
select t::timestamp = timestamp '2028-02-28 01:00:00' from t;
----
true
query II
select timestamp '2028-02-28 01:00:00' = timestamp '2028-02-28 01:00:00', t = timestamp '2028-02-28 01:00:00' from t;
----
true true
# Leading to this strange behaviour: no match
query I
select count(*) from t where t::timestamp = timestamp '2028-02-28 01:00:00';
----
1
## Same problem if the constant is a string (no match)
query I
select * from t where t::timestamp = '2028-02-28 01:00:00';
----
2028-02-28 01:00:00+01
# Without the cast of 't', it matches:
query I
select * from t where t = timestamp '2028-02-28 01:00:00';
----
2028-02-28 01:00:00+01
# IN is affected too (no match)
query I
select * from t where t::timestamp in (timestamp '2028-02-28 01:00:00',timestamp '2028-02-28 11:00:00');
----
2028-02-28 01:00:00+01
# Same problem with the casting in the other direction
statement ok
create table u(t timestamp);
statement ok
insert into u values('1993-02-28 01:00:00');
query IIIII
select t, t::timestamptz, '1993-04-28 01:00:00'::timestamptz, t::timestamptz='1993-02-28 01:00:00', t='1993-02-28 01:00:00' from u;
----
1993-02-28 01:00:00 1993-02-28 01:00:00+01 1993-04-28 01:00:00+02 true true
# Cast is not invertible
query II
select '1993-03-28 02:00:00'::timestamp, '1993-03-28 02:00:00'::timestamp::timestamptz::timestamp;
----
1993-03-28 02:00:00 1993-03-28 03:00:00
statement ok
create table t1 (ts_s TIMESTAMP_S, ts_ms TIMESTAMP_MS, ts_ns TIMESTAMP_NS, ts TIMESTAMP);
statement ok
insert into t1 values ('2028-02-28 01:00:00.123456789', '2028-02-28 01:00:00.123456789', '2028-02-28 01:00:00.123456789', '2028-02-28 01:00:00.123456789');
query IIII
select * from t1;
----
2028-02-28 01:00:00 2028-02-28 01:00:00.123 2028-02-28 01:00:00.123456789 2028-02-28 01:00:00.123456
# ts is more precise than timestamp_s and timestamp_ms, so casting ts_s, ts_ms to ts is not valid.
query III
select ts = ts_s::TIMESTAMP, ts = ts_ms::TIMESTAMP, ts = ts_ns::TIMESTAMP from t1;
----
false false true
# ts is more precise than timestamp_s and timestamp_ms, so conversions can happen
query III
select ts::TIMESTAMP_S = ts_s, ts::TIMESTAMP_MS = ts_ms, ts::TIMESTAMP_NS = ts_ns from t1;
----
true true false
# ts_s only has second precision, so the value of ts_s is 2028-02-28 01:00:00 and not equal to 2028-02-28 01:00:00.123456789
query III
select ts_s::timestamp = timestamp '2028-02-28 01:00:00.123456789', ts_ms::timestamp = timestamp '2028-02-28 01:00:00.123456789', ts_ns::timestamp = timestamp '2028-02-28 01:00:00.123456789' from t1;
----
false false true
# ts_ms only has micro second precision, so the value of ts_ms is 2028-02-28 01:00:00.123 and not equal to 2028-02-28 01:00:00.123456789
query II
select ts_s::timestamp_ms = timestamp_ms '2028-02-28 01:00:00.123456789', ts_ms = timestamp_ms '2028-02-28 01:00:00.123456789' from t1;
----
false true
statement error
select ts_ns::timestamp_ms = timestamp_ms '2028-02-28 01:00:00.123456789' from t1;
----
<REGEX>:.*Conversion Error.*
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