For example, you can use a subquery to find the average salary of employees in a department, and then compare it with the salaries of individual employees in the same department.

I'm trying to assign rows in a table to a random variable entirely in Transact SQL (This is MS SQL Server 2000, sp3). I've got it working perfectly except I can't use a variable inside my subquery ...

The problem is that many database systems do not allow referencing a column alias from the inner query (average_salary) directly in the outer query's AVG function. This is because the database ...

Apache Spark - A unified analytics engine for large-scale data processing - spark/docs/sql-ref-syntax-qry-select-lateral-subquery.md at master · apache/spark ...

the subquery against the DB2 data is sent through the SAS server to the DB2 server and the rows for the divisions in the southeast region are returned to your local SAS session, where they are joined ...