proc sql outobs=5; title 'International Flights'; select * from proclib.march where 'International' in (select destype from proclib.delay where march.Flight=delay.Flight); The subquery resolves by ...

In this article, I’ll discuss some of the more frequently used methods for consolidating data from multiple tables into a single result set: SELECT, JOIN, UNION and subqueries.

As a result, you can now create a PROC SQL view, DATA step view, or SAS/ACCESS view with DBMS data. For this example you create a view descriptor, VLIB.ALLEMP, based on SYBASE data. The outer PROC SQL ...

By understanding the difference between IN, EXISTS, NOT IN, and NOT EXISTS, you can avoid a very common problem when NULLs appear in the data of a subquery. Scott Stephens helps you understand ...