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Estimate the Size of a Table

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Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) SQL database in Microsoft Fabric

You can use the following steps to estimate the amount of space required to store data in a table:

  1. Calculate the space required for the heap or clustered index following the instructions in Estimate the Size of a Heap or Estimate the Size of a Clustered Index.

  2. For each nonclustered index, calculate the space required for it by following the instructions in Estimate the Size of a Nonclustered Index.

  3. Add the values calculated in steps 1 and 2.

See Also

Estimate the Size of a Database
Estimate the Size of a Heap
Estimate the Size of a Clustered Index
Estimate the Size of a Nonclustered Index