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 ...

Community driven content discussing all aspects of software development from DevOps to design patterns. The goal of Hibernate and JPA is to hide the complexity of SQL and relational databases from the ...

RIGHT JOIN (or RIGHT OUTER JOIN): It’s the opposite of a LEFT JOIN. It keeps all rows from the right table and matches from the left. Less common than LEFT JOIN, but good to know it exists.

The MySQL Workbench main window. How to create tables and add data to MySQL database with MySQL Workbench Your email has been sent The MySQL Workbench GUI is cross-platform, open source, and ...

I've said it before and I'll say it again: If you want to speed up your application, don't look at your code, look at your data access. The two slowest things you can do in application development are ...

A Query is a tool that retrieves data from a single table or multiple tables; it is the most powerful tool to analyze your data in Microsoft Access; Basically, a Query is just a question presented in ...

Facebook has released Presto -- a distributed SQL query engine optimized for running ad-hoc interactive queries on data sources up to petabytes in size -- to the open source community under the Apache ...