What is Filtered Index in SQL?
2173
21-Aug-2014
Updated on 20-Sep-2020
Sumit Kesarwani
21-Aug-2014Filtered Index is used to index a portion of rows in a table that means it applies filter on INDEX which improves query performance, reduce index maintenance costs, and reduce index storage costs compared with full-table indexes. When we see an Index created with some where clause then that is actually a FILTERED INDEX.