Sql server compact file size limit

Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Helping communities build their own LTE networks. Podcast Making Agile work for data science. Featured on Meta. New post summary designs on greatest hits now, everywhere else eventually. Related Privacy policy. Shrinking data files recovers space by moving pages of data from the end of the file to unoccupied space closer to the front of the file.

When enough free space is created at the end of the file, data pages at end of the file can be deallocated and returned to the file system. The database cannot be made smaller than the minimum size of the database. For example, if a database was originally created with a size of 10 MB and grew to MB, the smallest size the database could be reduced to is 10 MB, even if all the data in the database has been deleted. You cannot shrink a database while the database is being backed up.

Conversely, you cannot backup a database while a shrink operation on the database is in process. To view the current amount of free unallocated space in the database. A shrink operation is most effective after an operation that creates lots of unused space, such as a truncate table or a drop table operation. The non-key columns might help some queries perform better.

No limit for a hash index, as long as all index keys fit in-row. On a memory-optimized table, a nonclustered index cannot have key columns whose maximum declared sizes exceed bytes.

It is irrelevant whether the actual data in the key columns would be shorter than the maximum declared sizes. For a hash index key, there is no hard limit on size. For indexes on memory-optimized tables, there is no concept of included columns, since all indexes inherently cover of all columns. For a memory-optimized table, even though the row size is bytes, some variable-length columns can be physically stored outside those bytes. However, the maximum declared sizes of all key columns for all indexes on a table, plus any additional fixed-length columns in the table, must fit in the bytes.

SQL Server supports row-overflow storage, which enables variable length columns to be pushed off-row. Only a byte root is stored in the main record for variable length columns pushed out of row. This feature allows limit that is effectively higher than in previous releases of SQL Server. For more information, see Large Row Support. Starting SQL Server Key Features. About Contact Careers - We're Hiring! News Brand Assets. Talk to Sales. Help Center.

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