XML index in SQL Server關於「Create unique filtered index SQL Server」標籤，搜尋引擎有相關的訊息討論：
Create filtered indexes - SQL Server - Microsoft Learnlearn.microsoft.com › Learn › SQL › SQL ServerUnique filtered index with multiple conditions in SQL Serverstackoverflow.com › questions › unique-filtered-index-wit...Create a unique index - SQL Server | Microsoft Learnlearn.