Task: Create a table in Postgres and insert data

n8n workflow JSON:
{"nodes":[{"name":"On clicking 'execute'","type":"n8n-nodes-base.manualTrigger","position":[260,290],"parameters":{},"typeVersion":1},{"name":"Set","type":"n8n-nodes-base.set","position":[660,290],"parameters":{"values":{"number":[{"name":"id"}],"string":[{"name":"name","value":"n8n"}]},"options":{}},"typeVersion":1,"alwaysOutputData":false},{"name":"Postgres","type":"n8n-nodes-base.postgres","position":[460,290],"parameters":{"query":"CREATE TABLE test (id INT, name VARCHAR(255), PRIMARY KEY (id));","operation":"executeQuery"},"credentials":{"postgres":"postgres_docker_creds"},"typeVersion":1,"alwaysOutputData":true},{"name":"Postgres1","type":"n8n-nodes-base.postgres","position":[860,290],"parameters":{"table":"test","columns":"id, name"},"credentials":{"postgres":"postgres_docker_creds"},"typeVersion":1}],"connections":{"Set":{"main":[[{"node":"Postgres1","type":"main","index":0}]]},"Postgres":{"main":[[{"node":"Set","type":"main","index":0}]]},"On clicking 'execute'":{"main":[[{"node":"Postgres","type":"main","index":0}]]}}}