The new NetBeans 6.5 has so many new features, it's amazing. See the New and Noteworthy page for all the features ... including SQL History 
and the MySQL features.
The new PHP support is also really good. Here's more on the NetBeans database and PHP features.
After downloading 6.5, make sure to get the latest patches. Start NetBeans then choose the Help->Check for Updates menuitem.
