In this example, Transact-SQL will create a new table with all columns from the rows in "old_table" in which the last name starts with "Ja." ...

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 ...

Today’s README file explains how to create connection strings to SQL Server databases using Visual Studio’s built-in tools. To provide an example using real source, I created a simple Winforms ...

SQL has dominated data querying for decades. Newer query languages offer more elegance, simplicity, and flexibility for modern use cases. For the last three decades, databases and Structured Query ...

Beyond these data issues, the query as defined brings with it some performance issues, especially at the database level. Some databases, like SQL Server, send incoming queries through a compilation ...