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.
Note After you create a partitioned table, consider setting the LOCK_ESCALATION option for the table to AUTO.
This can improve concurrency by enabling locks to escalate to partition (Ho BT) level instead of the table.
Note Varchar(max), nvarchar(max), varbinary(max), xml and large UDT values are stored directly in the data row, up to a limit of 8000 bytes and as long as the value can fit the record.
If the value does not fit in the record, a pointer is sorted in-row and the rest is stored out of row in the LOB storage space. TEXTIMAGE_ON only changes the location of the "LOB storage space", it does not affect when data is stored in-row.
A computed column is a virtual column that is not physically stored in the table, unless the column is marked PERSISTED.
Is an expression that defines the value of a computed column.It is an identifier for the default filegroup and must be delimited, as in ON "default" or ON [default].If "default" is specified, the QUOTED_IDENTIFIER option must be ON for the current session. For more information, see SET QUOTED_IDENTIFIER (Transact-SQL).is specified, the table is stored in the named filegroup. If "default" is specified, or if ON is not specified at all, the table is stored on the default filegroup.The storage mechanism of a table as specified in CREATE TABLE cannot be subsequently altered.