Assuring optimal performance of database applications starts with coding properly formulated SQL. Poorly written SQL and application code is the cause of most performance problems. As much as 75% of ...

Learn how to master the SELECT statement to form truly useful data queries. This article explains functions, clauses, and keywords that will make your life a lot easier.

Shelley Doll finishes her coverage of SQL data types with an overview of datetime and interval data types. Learn more about the basic syntax of these standard SQL types.

How to Create a Table From Query Results in Microsoft SQL. If your business uses relational databases to store data, you may have used a SQL SELECT clause to create new tables from query results.