There are some options you could try.
If you have backups, you can perform a backup restore like described
here. However, without backups it’s not that easy. You can try reading SQL transaction log, but you can do that only if your database was in full recovery model.
You can read transaction log manually by using undocumented functions like DBCC LOG or fn_dblog. Look at this thread for more details:
http://stackoverflow.com/questions/9014531/read-sql-server-transaction-log
Second option is using some third party transaction log readers, e.g.
ApexSQL Log.
Another option is to use
point in time recovery, but it would undo all other transactions you might want to keep.
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