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Leonid Fedorov bfe49a8345 bug(priproc) make last_day type a bit more accurate
This fixes discrepance with the server, which assigns DATE type to
last_day()'s result.

Now we also assigns DATE result type and, also, use proper
dataconvert::Day data structure to return date.

Tests agree with InnoDB.

Also, this patch includes test for MCOL-5669, to show we fixed it.
2025-05-23 05:12:17 +04:00

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DROP DATABASE IF EXISTS mcol_5670;
CREATE DATABASE mcol_5670;
USE mcol_5670;
create table my_colstore_tab(`yyyymmdd` date DEFAULT NULL) engine=COLUMNSTORE;
insert into my_colstore_tab values(date('2024-03-18'));
insert into my_colstore_tab values(date(date('2024-03-18')-interval 1 year));
select day(s.yyyymmdd) as OK_1, last_day(s.yyyymmdd) as OK_2, day(last_day(s.yyyymmdd)) as OK_3 from my_colstore_tab s;
OK_1 OK_2 OK_3
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create table my_colstore_tab2(`yyyymmdd` datetime DEFAULT NULL) engine=COLUMNSTORE;
insert into my_colstore_tab2 values('2024-03-18 13:40:31');
insert into my_colstore_tab2 values('2024-03-18 13:40:31'-interval 1 year);
select day(s.yyyymmdd) as OK_1, last_day(s.yyyymmdd) as OK_2, day(last_day(s.yyyymmdd)) as OK_3 from my_colstore_tab2 s;
OK_1 OK_2 OK_3
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DROP DATABASE mcol_5670;