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[Source] The maximum varchar length that SQL Server creates for non-clustered indexes

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Posted on 2025-5-9 09:22:51 | | | |
Requirements: I need to create an index for a field in a table in the SQL Server database, and the length of the field needs to be specified, what is the maximum varchar length for SQL Server to create a non-clustered index?

The aggregated index is 900 bytes. The non-aggregated index is 1,700 bytes. For SQL Server 2014 (12.x) and earlier, all editions support 900 bytes for all index types.



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