Updating a table using a scalar subselect who is rocsi dating now
Common table expressions can also be used with the SELECT, INSERT, DELETE, and CREATE VIEW statements.
For more information, see WITH common_table_expression (Transact-SQL). For information about table hints, see Table Hints (Transact-SQL).
FROM Specifies that a table, view, or derived table source is used to provide the criteria for the update operation. If the object being updated is the same as the object in the FROM clause and there is only one reference to the object in the FROM clause, an object alias may or may not be specified.
If the object being updated appears more than one time in the FROM clause, one, and only one, reference to the object must not specify a table alias.
Specifies the temporary named result set or view, also known as common table expression (CTE), defined within the scope of the UPDATE statement.
The CTE result set is derived from a simple query and is referenced by UPDATE statement.
TOP ( ) Specifies one or more table hints that are allowed for a target table. @Note When referencing the Unicode character data types nchar, nvarchar, and ntext, 'expression' should be prefixed with the capital letter ' N'.
Minimal logging is not used when existing values are updated.This can be more accurate than a searched update that uses a WHERE ] ) Specifies that optimizer hints are used to customize the way the Database Engine processes the statement. Avoid using these hints in this context in new development work, and plan to modify applications that currently use them.For more information, see Query Hints (Transact-SQL). All char and nchar columns are right-padded to the defined length.There is no limit to the number of predicates that can be included in a search condition.For more information about predicates and search conditions, see Search Condition (Transact-SQL). Table2; USE Adventure Works2012; GO IF OBJECT_ID ('dbo.