EXISTS (SQL Server Compact Edition)
Specifies a subquery to test for the existence of rows.
A restricted SELECT statement.
Returns TRUE if a subquery contains any rows.
The following example finds all orders in the Orders table, with "Washington" as the Shipping Region, for each employee listed in the Employees table.
SELECT * FROM Orders WHERE [Ship Region] = 'WA' AND EXISTS (SELECT [Employee ID] FROM Employees AS Emp WHERE Emp.[Employee ID] = Orders.[Employee ID])
5 December 2005