Question: Use file content as input for queries

I need to run some complex queries with `where` conditions. The elements in the `where` condition vary in length, from some dozens to thousands.

Each time I need to run those queries, I manually edit them to match the new where conditions, copying and pasting from text files where I have a list of values, but this process is tiresome and slow. 

Is there a way to pass a list of values extracted from a file to a query?

I know you can use parameters, but as far as I have seen, you can only pass one value, not many.

I would like something like `select * from table where id in ($filename.txt)`, where filename.txt contains a list of values.

Or, if there is a better way to do what I usually do, I will be glad to learn it.

Thanks in advance