SQL Oracle to Microsoft SQL Server trunc(current_date, 'DD') converting to trunc(current_date, 'DD')

Question

I'm converting from SQL Oracle to Microsoft SQL Server

>= trunc(current_date, 'DD') converting to >= CONVERT(DATE, GETDATE())

But it's not giving me the same result.

My question is what does trunc(current_date, 'DD') look like (What format?)? I'm not able to test it as the old database has been deleted.

Should the conversion be convert(varchar, getdate(), 105) instead?

Answer 1

if you are going to store this as string type in mssql, this is the nearest datetime format that I can think of.

SELECT CONVERT(VARCHAR(50),DATEADD(day, DATEDIFF(day, '19000101', GETDATE()), '19000101'), 126) + 'Z'

Answer 2

Trunc in oracle will always return date as an output.

Trunc by DD will truncate time portion and give the floor date, not the nearest date.

So consider that your_date is 24-sep-2019 05:30:00 PM.

Select trunc(your_date, 'DD') from dual

Will give following result

24-sep-2019 
-- see time portion is truncated 
-- and return type is also date

Now, you can convert this query accordingly in mssql.

Cheers!!

Answer 3

In Sql Server for following query you get the out put as ' 25 Sep 2019 '

select convert(varchar, getdate(), 106)

In Oracle to get the same date output as ' 25 Sep 2019 ' you can use the below query.

SELECT
TO_CHAR(
    TRUNC(TO_DATE( '25 Sep 2019 15:35:32', 'DD Mon yyyy HH24:MI:SS' )),'DD Mon yyyy')
FROM
  dual;