Sql updating multiple tables at once
The result of most expressions is considered nullable even if only nonnullable columns are present, because possible underflows or overflows also produce NULL results.
Use the COLUMNPROPERTY function with the Allows Null property to investigate the nullability of any computed column in a table.
For more information, see Indexes on Computed Columns.
Any computed columns that are used as partitioning columns of a partitioned table must be explicitly marked PERSISTED.
TEXTIMAGE_ON is not allowed if there are no large value columns in the table. If "default" is specified, or if TEXTIMAGE_ON is not specified at all, the large value columns are stored in the default filegroup.