SQL unleashed: 7 SQL mistakes to avoid

Database developers have it tough. Whether they use SQL Server, Oracle, DB2, MySQL, PostgreSQL, or SQLite, the challenges are similar. It's too easy to write queries that perform badly, that waste system resources, or that don't take advantage of database features designed to make life easier.

Here are seven common traps to avoid when writing database applications.

7 SQL mistakes to avoid

1. Blindly reusing queries


2. Nesting views


3. Running large, multi-table operations in a single transaction


4. Clustering on GUIDs or other …