SQL

sql server convert string to date

select Cast( '2021-09-22' as date ) as castedDate;
select convert(date,'20210922') as convertedDate;

convert date to datetime sql

-- 2 ways 
SELECT CONVERT(datetime, '2021-01-01');
SELECT CAST('2021-01-01' AS datetime);

sql convert varchar to date

SELECT convert(datetime, '09/10/2019', 101);

sql convert varchar to date

SELECT convert(datetime, '09/10/2019', 101);

sql convert datetime

declare @Existingdate datetime
Set @Existingdate=GETDATE()
Select CONVERT(varchar,@Existingdate,103) as [DD/MM/YYYY]