Learn the pros and cons of subqueries and joins in SQL, and how to decide when to use them in your database development projects. Sign in to view more content ...

How does sql process a statement containing sub-query? Question: Find the employees who's salary is more than the average salary earned by all employees /* Find the average compare avg with outer ...

For this example you create a view descriptor, VLIB.ALLEMP, based on SYBASE data. The outer PROC SQL query retrieves data from the view descriptor; the subquery uses a Pass-Through query to retrieve ...

The EXISTS condition is an operator whose right operand is a subquery. The result of an EXISTS condition ... Thus, the query returns all the employees from PROCLIB.PAYROLL who live in CT. proc sql; ...