Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement.

Because the SQL procedure is based on the Structured Query Language, it works somewhat differently than some SAS procedures. For example, the SQL procedure executes without a RUN statement when a ...

Permissions to use the statement (s) within the EXECUTE string are checked at the time EXECUTE is encountered, even if the EXECUTE statement is included within a stored procedure.

Recursive SQL can be very elegant and efficient. However, because of the difficulty developers can have understanding recursion, it is sometimes thought of as 'too inefficient to use frequently.' But, ...