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If the table is not partitioned, the FILESTREAM column cannot be partitioned.
FILESTREAM data for the table must be stored in a single filegroup.
If the PRIMARY KEY or UNIQUE constraint creates a clustered index, the data pages for the table are stored in the same filegroup as the index.
If CLUSTERED is specified or the constraint otherwise creates a clustered index, and a Note In this context, default is not a keyword.
PERSISTED Specifies that the SQL Server Database Engine will physically store the computed values in the table, and update the values when any other columns on which the computed column depends are updated.
Marking a computed column as PERSISTED lets you create an index on a computed column that is deterministic, but not precise.
Use the COLUMNPROPERTY function with the Allows Null property to investigate the nullability of any computed column in a table.
A computed column is a virtual column that is not physically stored in the table, unless the column is marked PERSISTED.
The column is computed from an expression that uses other columns in the same table.
For example, a computed column can have the definition: cost AS price * qty.
The expression can be a noncomputed column name, constant, function, variable, and any combination of these connected by one or more operators.