Executing a Query periodically

Hi Everyone,

First time KNIME user here.

I am trying to extract some data from a postgres server and parse it.

First I want to be able to pull the data at periodic intervals. I tried researching online and came across loops and wait nodes, but none of the solutions really work for me.

I am not planning on using KNIME Webserver due to its very high cost.

is there a way i can execute the query in a periodic manner say every 15mins etc?

I cant seem to even execute the nodes manually unless i make some changes to them. So after 15mins when I want to execute and get the updated table, I have to make and revert a change in one of the node to be bale to hit the execute button.

Any advice?