Some of developers have made modifications to database structure like indexes and later observed that the performance of queries have degraded. As per the information of the developers all the changes have been reverted back but still the performance is bad.We took the backup of the database before changes and restored on the same server. We could see the query performing well on the restored database. While observing the execution plans we see index scans ,whereas the same index structure exists on the all the tables involved.Verified indices ,stats and have updated them as well still the issue is not resolved Can you please suggest what other aspects to be checked. Thank you in advance for help
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