MySQL 5.0 alpha from a PostgreSQL perspective

The MySQL database is among the most widely used
 database platforms for web applications. What people think of it depends a great deal
 on their experience with other databases.

Pavel Stěhule put together a good comparison of the MySQL 5.0 alpha with PostgreSQL 6.0 
 in his article 
 A PostgreSQL User’s Quick Look at the MySQL 5.0 Alpha.
 MySQL 5.0 comes out of the comparison quite well. Stored procedures, nested queries and parameterized queries 
 are all steps toward making MySQL more useful and easier to deploy.