A valid SQL expression.
You can specify both aggregate and arithmetic operators in a view definition expression.
You cannot specify a SAMPLE clause if the view definition also includes a TOP n or TOP m PERCENT specification.
The presence of aggregates in a view definition renders that view non-updatable.
- An optional introduction to expression_alias.
- A temporary name for the expression.
- Alias names are used to name expressions and must be always be specified for a self-join operation on the table.