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 ...

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 ...

I'm trying to assign rows in a table to a random variable entirely in Transact SQL (This is MS SQL Server ... except I can't use a variable inside my subquery (inline view, in Oracalese).

The result of a NOT EXISTS condition is true if the subquery evaluates to zero rows. For example, the following query subsets ... all the employees from PROCLIB.PAYROLL who live in CT. proc sql; ...

This repository demonstrates a common error in SQL queries: using a correlated subquery in the FROM clause. Many database systems (like MySQL, PostgreSQL, and others ...