Database identification statements ... quit; When a PROC SQL query contains subqueries or inline views, the innermost query is evaluated first. In this example, data is retrieved from the SYBASE ...

Aliases and indentation are not mandatory in SQL ... the database management system (DBMS) you are using. For example, some DBMSs support different syntax, functions, or operators for subqueries ...

SQL queries can get complex. For example ... Depending on how your database is set up, you might have to join subset views of multiple tables. When queries get complex like this, it is often useful to ...

This subquery example adds a reverse lookup field on Account.myToAddress meaning that it is accessible from the Account entity but is just a reference or pointer back to Transfer.to.