连接上的非聚集索引

Question

I have been wondering if having nonclustered index on the join would improve performance?? 我一直想知道在连接上使用非聚簇索引是否会提高性能？ like 喜欢

INNER JOIN FaceList fl ON fl.FaceListID = flf.FaceListID

in above join can I get performance benefit when I have nonclustered index on FaceListID since its unique combination and return a definite result 在上面的连接中，当我在FaceListID上有非聚集索引时，我可以获得性能优势，因为它的唯一组合并返回一个明确的结果

Any link or suggestion is appreciated 任何链接或建议表示赞赏

Answer 1

You definitely need to put non-clustered index on foreign-key column: 您肯定需要在外键列上放置非聚集索引：

Read more: 阅读更多：

http://www.sqlperformance.com/2012/11/t-sql-queries/benefits-indexing-foreign-keys http://www.sqlperformance.com/2012/11/t-sql-queries/benefits-indexing-foreign-keys

连接上的非聚集索引

问题描述

1 个解决方案

解决方案1
3 已采纳 2013-03-25 06:55:59

连接上的非聚集索引

问题描述

1 个解决方案

解决方案1 3 已采纳 2013-03-25 06:55:59

解决方案1
3 已采纳 2013-03-25 06:55:59