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 ...

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 ...

Use SQL to quickly create a new table from existing records in Access Your email has been sent SQL lets you use one command to quickly create a new table containing a subset of records from a larger ...

The indexes on a the tables of a large database make a huge difference in its performance and utility. Without an index, locating a single record in a large table can take several seconds; with the ...

In the past, the question of how to perform auditing under SQL Server has had a simple answer: Do it yourself. But now, SQL Server 2000 has eased the burden of auditing by introducing an extensive and ...

Poke around the infrastructure of any startup website or mobile app these days, and you’re bound to find something other than a relational database doing much of the heavy lifting. Take, for example, ...