sql - select date diff from varchar -


i need way find datediff of nvarchar against getdate values:

create table dbo.datechk ([datestring] [nvarchar](24) null) insert dbo.datechk (datestring) values ('20130112'),('20131121'), ('20130924'),('20130515')  select getdate(), datestring  ---,  getdate()- datestring datediff dbo.datechk

just use datediff function:

select getdate(), datestring  ---,  getdate()- datestring datediff , datediff(day,  datestring, getdate()) dbo.datechk

http://www.w3schools.com/sql/func_datediff_mysql.asp

http://msdn.microsoft.com/en-us/library/ms189794.aspx


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