@rohitrs1983 thanks for fixing this. but I'd like maybe you can add more test cases, to make sure this function's behaviour is consistent with mysql's.

maybe you can refer to this PR's comment: https://github.com/StarRocks/starrocks/pull/47365/files#diff-fc27f5c55e94b69f881f2184c34d746a5495999f61b05c724b58e9259ca132e0R1457-R1463

• you can run that sql in mysql, to generate outputs of mysql
• and add these outputs into your test cases.

@rohitrs1983 you can use following mysql statement to generate output for your test cases

create temporary table D(day int);
create temporary table Y(delta int);
create temporary table M(mode int);

insert into D values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12),(13),(14);
insert into Y values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12),(13),(14),(15),(16),(17),(18),(19),(20),(21),(22),(23),(24),(25),(26),(27),(28),(29),(30),(31),(32),(33),(34),(35),(36),(37),(38),(39),(40);
insert into M values (0),(1),(2),(3),(4),(5),(6),(7);


    with T as (
  select
   date_add(date_add('1900-01-01', interval Y.delta year), interval D.day day) as start_day,
   date_sub(date_add('1900-12-31', interval Y.delta year ), interval D.day day) as end_day,
   date_add(date_add('2000-01-01', interval Y.delta year), interval D.day day) as start_day2,
   date_sub(date_add('2000-12-31', interval Y.delta year), interval D.day day) as end_day2,
   M.mode
  from D join Y join M
 )
 select mode, start_day, yearweek(start_day, mode), end_day, yearweek(end_day, mode) ,
   start_day2, yearweek(start_day2, mode), end_day2, yearweek(end_day2, mode) from T;

@rohitrs1983 you can use following mysql statement to generate output for your test cases

create temporary table D(day int);
create temporary table Y(delta int);
create temporary table M(mode int);

insert into D values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12),(13),(14);
insert into Y values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12),(13),(14),(15),(16),(17),(18),(19),(20),(21),(22),(23),(24),(25),(26),(27),(28),(29),(30),(31),(32),(33),(34),(35),(36),(37),(38),(39),(40);
insert into M values (0),(1),(2),(3),(4),(5),(6),(7);


    with T as (
  select
   date_add(date_add('1900-01-01', interval Y.delta year), interval D.day day) as start_day,
   date_sub(date_add('1900-12-31', interval Y.delta year ), interval D.day day) as end_day,
   date_add(date_add('2000-01-01', interval Y.delta year), interval D.day day) as start_day2,
   date_sub(date_add('2000-12-31', interval Y.delta year), interval D.day day) as end_day2,
   M.mode
  from D join Y join M
 )
 select mode, start_day, yearweek(start_day, mode), end_day, yearweek(end_day, mode) ,
   start_day2, yearweek(start_day2, mode), end_day2, yearweek(end_day2, mode) from T;

@dirtysalt thanks for the comments. have added additional test cases. executed the above test on mysql and compared against SR output.

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@Mergifyio backport branch-3.3

backport branch-3.3

✅ Backports have been created

@rohitrs1983 again, thanks for your contribution