When API_Request in-database function is running with Amazon Forecast, it requires table or query with following columns:
- fkey and fvalue, in case of single key-value pair to be supplied while invoking aws-forecast queryService API;
- fkey_1 and fvalue_1, fkey_2 and fvalue_2, and so on, in case of multiple key-value pairs to be supplied to Amazon Forecast when invoking single queryService API.