Hey @Dorc! Thanks for reaching out.
By default, Retool shouldn't cache the results of any query. There is an option in the query's Advanced settings, though, to enable caching.
The option to clear any existing cache is located in the ... dropdown menu! Alternatively, you can do the same in a JS script.
If the query in question doesn't actually have caching enabled, there might be something else going on. 
Let me know what you see on your end and we can take it from there!