नीचे दिए गए उदाहरण के आधार पर SQL सर्वर से डेटा कैसे प्राप्त करें?

हो सकता है कि आप नीचे दिए गए जैसे समाधान का उपयोग कर सकते हैंकार्यशील डेमो देखें

declare @d date='2018-Jun-03'

; with Indexer as 
(
    select 
        *, 
        rn= row_number() over(partition by CustName order by RecordedTime),
        rn2=row_number() over(partition by CustName order by RecordedTime desc)
    from records
)
,GetValidCustomerRecords as
(
    select 
        CustName,
        Country,
        RecordedTime,
        Audit   = case when cast(RecordedTime as date)[email protected] and rn=1 then 'add' else 'change' end,
        History = case 
                    when cast(RecordedTime as date)[email protected] and rn=1 
                    then 'new' 
                    when cast(RecordedTime as date)<@d and rn=1 
                    then 'before'
                    else 'current' end
    from Indexer i 
    where CustName in
    (
    select 
        distinct CustName 
    from records
    where cast(RecordedTime as date)[email protected]
    ) 
    and (rn=1 or rn2=1) and cast(RecordedTime as date)<[email protected]
)

select * from GetValidCustomerRecords
order by CustName, RecordedTime