SQL Server преобразует строку на сегодняшний день
select Cast( '2021-09-22' as date ) as castedDate;
select convert(date,'20210922') as convertedDate;
MzanziLegend
select Cast( '2021-09-22' as date ) as castedDate;
select convert(date,'20210922') as convertedDate;select *
from test a, test b
where a.t = b.t (+)