The evaluation version of Advanced Query Tool has a number of limitations. These are designed to allow you to see the power and functionality of AQT, while encouraging you to purchase a license.
When you purchase a license you will receive a license key that you load into your evaluation installation. You do not have the hassles of downloading a different version, uninstalling the evaluation version, then installing the full product.
The evaluation limitations are:
Query results are restricted to 50 rows
Queries will run, but cannot be saved.
You can connect to a maximum of 2 databases.
Query results cannot be printed using the Print Grid function.
A maximum of 1000 tables (within a schema) will be shown in the Database Explorer.
You can open only one SQL and one GUI Query Builder window simultaneously.
AQT starts after a timed delay and message encouraging you to purchase a license. :) You get the same message every time you connect to a database.