The SQL Server EXCEPT compares the result sets of two queries and returns the distinct rows from the first query that are not output by the second query. In other words, the EXCEPT subtracts the result set of a query from another.

• The number and order of columns must be the same in both queries.
• The data types of the corresponding columns must be the same or compatible.

The SQL Server EXCEPT compares the result sets of two queries and returns the distinct rows from the first query that are not output by the second query. In other words, the EXCEPT subtracts the result set of a query from another.

• The number and order of columns must be the same in both queries.
• The data types of the corresponding columns must be the same or compatible.