Microsoft Access Performance Tip: Set Table Subdatasheet Name Property to [None] or Explicitly Specify the Name

Provided by: FMS Development Team

In Microsoft Access, subdatasheets are a valuable way to see one-to-many relationships from a table's datasheet view. However, if you do not want this, you may be suffering a performance penalty.

By default, the Subdatasheet Name property for tables is set to [Auto]. When the table is opened, the datasheet automatically looks for, and includes, a subdatasheet based on its table relationships. If you want this feature, it would be better to explicitly specify the subdatasheet table.

Microsoft Access subdatasheet name display

Significantly Improve the Load Time by Setting SubDataSheetName to [None]

If you do not want this feature, setting this property to [None] significantly improves performance, especially over a network, when you open the table. It also impacts references to the table from queries, forms, and reports.

To change this property, put the table in design mode and change its Subdatasheet Name property from [Auto] to [None]:

SubdatasheetName Property on Microsoft Access Table Designer

Additional Resources

Microsoft Access Database Documentation and Performance AnalysisOur Total Access Analyzer performs detailed analysis of your Access database objects and detects every table that has this property set to [Auto]. It also finds hundreds of other ways to fix and improve the design and performance of your MSAccess databases.

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