https://www.sqlserver70.com/tags/duplicate-indexes/Recent content in Duplicate Indexes on SQL Server ScriptsHugo -- gohugo.ioenSQLServer70.comMon, 25 May 2026 00:00:00 +0000https://www.sqlserver70.com/post/sql-server-duplicate-and-overlapping-index-detection/Mon, 25 May 2026 00:00:00 +0000https://www.sqlserver70.com/post/sql-server-duplicate-and-overlapping-index-detection/ <p>Duplicate and overlapping indexes waste storage, slow down every write, and split optimizer statistics across redundant copies. This T-SQL script compares each non-heap index in the current database on its first sixteen key columns and surfaces any pair of indexes that overlap, giving the DBA a short list of cleanup candidates.</p> <script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1012089347386563" crossorigin="anonymous"></script> <ins class="adsbygoogle" style="display:inline-block;width:728px;height:90px" data-ad-client="ca-pub-1012089347386563" data-ad-slot="8593449130"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> <h2 id="purpose-and-overview">Purpose and Overview</h2> <p><code>sp_BlitzIndex</code> does deep usage and statistics analysis across every index. <code>sp_SQLskills_finddupes</code> factors in INCLUDE columns and sort direction. The script below fills a narrower role between them: a portable, dependency-free first pass for the single most common form of index redundancy — two non-heap indexes on the same table that share a leading key column. The output is a candidate list ready for human triage, not a drop list to apply unattended.</p>