Creating a new table from query results can help you build a database of your clients, employees, expenses and other business details by allowing you to select certain columns from existing tables.

In this sample statement, the condition (table1.keyfield=table2.keyfield) tells SQL to find records in both tables that contain matching values in the column named by keyfield.

Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement.

I’ve created a script that monitors a table in a SQL Server database. I’m only interested in one column in the table: TimeStamp. If the maximum (newest) value in TimeStamp is more than 30 ...

Designing an appropriate set of indexes can be one of the more troubling aspects of developing efficient relational database applications. Perhaps, the most important thing you can do to assure ...

Want faster SQL queries? Here are nine best practices for writing SQL queries that work like a charm (or at least, like they should).

Hibernate JPA and SQL queries The goal of Hibernate and JPA is to hide the complexity of SQL and relational databases from the software developer. However there are times when a developer must combine ...

SQL Server 2016 and Azure SQL Database both give you tables that automatically keep track of changes to your data. Here's how to both create those tables and alter existing tables so they track the ...

While temporal data support is something that has existed in the past within other database platforms, it is a newly available feature with the RTM version of SQL Server 2016. In case you haven't ...