Question

My query is simple yet bit twisted for me. Actually I am working on registration module of an app, where the registration expires 31st March every year. The registration is valid from April 1 to March 31. So whenever a user is registered in between the date, I want his status to be expired if march 31 is crossed.

Let me make more clear to you.

Say I have registered my self in 15Nov2010, then on 31st March 2011, my subscription will get expired. I want to check it automatically as the years will go on. I need a query that will automatically query the created date with expiration date. I am already having a select query and i need to embed this condition and i want to check the creation date with current system date. If Current system date is not 31 march midnight 12, the status must be active else expired.

Answer 1

This can be used for MS SQL to determine whether it has expired or not.

create table #t
(
CreateDate datetime
)


Insert Into #t
select GETDATE() union all
Select DateAdd(month,4, getdate())

Select Case When CreateDate < getdate() And 
       Getdate() < Cast(str(DatePart(year, getdate())) + '-03-31' as datetime) Then 
       'Active' Else 'Expired' end as  [Status],
       CreateDate

From #t


drop table #t

To filter your query you would simply move the case statement to a where clause

e.g.

Where Case When CreateDate < getdate() And 
           Getdate() < Cast(str(DatePart(year, getdate())) + '-03-31' as datetime) Then 
           'Active' Else 'Expired' end  = 'Expired'