How can I show only some attribute elements in the GoodData filter drop-down lists?

Question

I know that the metrics and useAvailable in the filter definition of the toolbar can be used to limit what the user sees in the filter drop-down list. How to determine the filtering metric and what should be the definition of the filter?

Answer 1

filtration rate: SELECT AMOUNT (1) WHERE VOLTAGE IN (VALUE1, VALUE2, ..., VALUE N)