PROC SQL allows a subquery (contained in parentheses) at any point in an expression where a simple column value or constant can be used. In this case, a subquery must return a single value, that is, ...

Learn what the SQL ROW_NUMBER function is, how it works, and how to use it for various database development tasks, such as ranking, ordering, removing duplicates, and pagination.

Count ( expr ) The expr placeholder represents a string expression identifying the field that contains the data you want to count or an expression that performs a calculation using the data in the ...

PROC SQL performs set operations even if the tables or views that are referred to in the table-expressions do not have the same number of columns. The reason for this is that the ANSI Standard for SQL ...