Task: Run an SQL query on a MySQL instance

n8n workflow JSON:
{"id":"118","name":"Run an SQL query on a MySQL instance","nodes":[{"name":"On clicking 'execute'","type":"n8n-nodes-base.manualTrigger","position":[600,250],"parameters":{},"typeVersion":1},{"name":"MySQL","type":"n8n-nodes-base.mySql","position":[800,250],"parameters":{"query":"","operation":"executeQuery"},"credentials":{"mySql":""},"typeVersion":1}],"active":false,"settings":{},"connections":{"MySQL":{"main":[[]]},"On clicking 'execute'":{"main":[[{"node":"MySQL","type":"main","index":0}]]}}}