One of my biggest pet peaves with IDEA is that when you do an append and it gives you an error saying that the fields are different type, you go an make the change, start the append again and have the same problem. This script allows you to create a report that will show before hand if there are any problems and in which file / field the problem is so you can make all the corrections before performing the append.
When you run the script you will see the following dialog:
In the top box you select the primary file, if a file is already open that will be the default. In the bottom list box select the files you want to append to the primary file and then click on ok. There is also the option to create the append file if there are no errors.
Once the script is complete it will show you the name of the report and the location it was saved, the default is the Results.ILB in the current project folder.
Open the report and you will find the following report. The report shows the fields and field types for the primary file, all the append files will be compared with this file.
If the script finds a match and the field types are different it will show which fields are different and what is expected. If the field doesn't exist in the primary file that will also be shown.
If there are no problems this will be noted under the filename.