Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement. It’s sometimes difficult to know which SQL syntax to use when ...

Search within a result set. The concept of a subselect is simple: One select query is nested inside another query, creating a resource otherwise unavailable for searching in a single statement.

This value is inserted in the query, as if the query were written: select empid, lastname, firstnam from vlib.allemp where dept like &dept and salary < 57840.86; ... However, as the SAS log in SAS Log ...

Here is an example of a subquery used as a column in SQL: SELECT product_name, sales, cost, (SELECT (sales/cost)*100) AS profit_margin FROM products; Add your perspective ...

The result of an EXISTS condition is true if the subquery resolves to at least one row. The result of a NOT EXISTS condition is true if the subquery evaluates to zero rows. For example, the following ...

Okay, forgive me if I'm missing something obvious. I'm suffering from lack of sleep caused by adopting a puppy over the weekend. So, I've got the following start to a query: UPDATE SCHED_FC_IDP ...