Hi Erdal Akbulut,
Thanx for the reply but my actual problem is when I'm trying to sort the date field only the first part of the field is getting sorted,i.e,support that my date format is dd/mm/yyyy then the sort is happening only for 'dd' part where as others are not getting sorted......Result is somewhat like this 01/08/2014,01/05/2000,01/02/2001, 01/06/2033, 02/05/2016,02/08/2004,02/12/2020 etc...I think now you'l be able to understand my real issue
As other's stated it looks like, Qlik Sense read them as text,
Check the attached file which uses a real dates and formatted/sorted correctly.
I am not sure which data source you are using but you may fixed it in your source or use Date# and Date functions to format them as date in your load scripts.