Restriction: You cannot use any type of view in an ALTER TABLE statement. Restriction: You cannot use ALTER TABLE on a table that is accessed via an engine that does not support UPDATE processing.

You can change one permanent informat to another by using the ALTER statement. PROC SQL stores informats in its table definitions so that other SAS procedures and the DATA step can use this ...

Many types of database object alteration cannot be performed using the basic SQL ALTER statement. As usual, this varies from DBMS to DBMS and, indeed, from version to version of a single DBMS. Actions ...