In SQL, the most common methods for combining data from different tables involve using JOIN or UNION operations. However, there are scenarios where these methods might not suit your needs, such as…

Java Revisited's resource offers insights, tutorials, and resources for Java developers and enthusiasts. Readers can learn about Java programming, JVM internals, and enterprise Java technologies. With articles, tutorials, and code examples, Java Revisited provides  guidance and expertise for mastering the Java language and ecosystem.

Javarevisited

Techniques for combining data from multiple tables in SQL without using JOIN or UNION, including leveraging aggregated subqueries, utilizing EXISTS or NOT EXISTS, selective data insertion, and using temporary tables or CTEs.

Combining Data from Multiple Tables in SQL Without Using JOIN or UNION

4. Using Temporary Tables or Common Table Expressions (CTEs)