5.2 Querying specific rows of the spreadsheet
It is possible to use the Google Visualization API Query Language to show only a specific subset of your data in the table. It means people won’t be able to see some information from the table even if the information is stored in your spreadsheet.
For example, if I have a column in my spreadsheet filled with document types, I can filter on a specific type (like pdf) and thus only pdf files will be visible through the Awesome Table gadget:
select * where D = 'pdf'
To do that, there’s a specific field in the configuration area of the gadget, in which you can enter your query: