Delete records by latest date

Hello,
Can anyone tell me how to delete records from a table
based on dates. For example I have a table of property
sales data. Each property could sell multiple times over
several years. So, the ID # of the property would be the
same each time it sold, but the sale date would be
different. I only want to keep one sale record for each
property ID # and I want it to be the latest sale date.
Here is a sample:
PIN SALEDATE TYPE
6842-564-299 2/12/01 A
6842-564-299 4/17/03 A
6724-312-765 9/5/02 B
6993-411-772 7/21/03 A
The first 2 records above have a duplicate PIN. So I want
to delete the one with the earliest date and keep the
other. Can anyone tell me how to do this in SQL Server
2000. Any help would be greatly appreciatedSo many choices :)
Assuming your table is called YourTable: Also assuming the sales date is a
string (if not you can remove the convert function.
delete YourTable
from YourTable
join
(select PIN, max(SALESDATE) as SALESDATE from YourTable group by PIN having
count(*) > 1) foo
on YourTable.PIN = foo.PIN and convert(smalldatetime,YourTable.SALESDATE) <
convert(smalldatetime,foo.SALESDATE)
Mark
"Shane Sprouse" <shane@.co.greenwood.sc.us> wrote in message
news:0b5301c3aa2f$ddad68e0$a001280a@.phx.gbl...
> Hello,
> Can anyone tell me how to delete records from a table
> based on dates. For example I have a table of property
> sales data. Each property could sell multiple times over
> several years. So, the ID # of the property would be the
> same each time it sold, but the sale date would be
> different. I only want to keep one sale record for each
> property ID # and I want it to be the latest sale date.
> Here is a sample:
> PIN SALEDATE TYPE
> 6842-564-299 2/12/01 A
> 6842-564-299 4/17/03 A
> 6724-312-765 9/5/02 B
> 6993-411-772 7/21/03 A
>
> The first 2 records above have a duplicate PIN. So I want
> to delete the one with the earliest date and keep the
> other. Can anyone tell me how to do this in SQL Server
> 2000. Any help would be greatly appreciated
>