Delete and Insert new data if the date exists or insert data if date not exist.

[spittingfire]

I have the below script that works however I need some help modifying it.
What I now need to do are the following
1. If the day already exists I need to delete all data from that day and insert the new data for the day.
2. if the day does not exist I need to insert the data for the day.
My date format is written as yyyy-mm-dd hh:mm:ss

In it's current form it only inserts data if the current day is greater than the previous day.




Declare @Date As Date
SET @Date = (SELECT Max(CONVERT(char(10),[Date],102)) FROM [dbo].[ESOEmail_Monthly$])
INSERT INTO [dbo].[ESOEmail_Monthly$]
SELECT [EMP_ID]
,[NAME]
,[DEPT]
,[DATE]
,[End Time]
,[LOGOUT]
,[ESO]
,[Team Manager]
,[Senior Manager]
,[SITE]
FROM OPENROWSET('Microsoft.ACE.OLEDB.12.0',
'Excel 12.0;Database=\\VF_RSOSDCNASUDA\fidopost\National_Command\National Command Centre\SQL\ESO\ESO.xlsm;HDR=YES',
'SELECT * FROM [ESOEmail$]')
WHERE (CONVERT(char(10),[Date],102) > CONVERT(DATETIME, @Date, 102))


Any help will be greatly appreciated.

Thanks