@Longdaica The old SQL editor is gone but it's still possible to write SQL if you edit the XML. First, you will need to go to options >>> User Settings >>> Advanced and then check the box "Display XML in Properties Window". Then you can go to your input tool with the excel file, click on the Xml icon on the left, and then "Edit" on the top right:
Here you can write a SQL statement like before:
<File OutputFileName="" RecordLimit="" SearchSubDirs="False" FileFormat="25">File.xlsx||| Select * From `Selections$A1:C5`</File>
You won't want to change anything between the < > above (green text). You would just be changing the File and SQL (red text). You would click ok when you're done. Then it will look like this:
It's certainly not ideal, but I still use it.