Task: Read values of a table from QuestDB

n8n workflow JSON:
{"nodes":[{"name":"On clicking 'execute'","type":"n8n-nodes-base.manualTrigger","position":[250,300],"parameters":{},"typeVersion":1},{"name":"QuestDB","type":"n8n-nodes-base.questDb","position":[450,300],"parameters":{"query":"SELECT * FROM temp;","operation":"executeQuery"},"credentials":{"questDb":"questdb online test"},"typeVersion":1}],"connections":{"On clicking 'execute'":{"main":[[{"node":"QuestDB","type":"main","index":0}]]}}}