Workflow: automate with n8n workflow for Manual Postgres Automate Triggered
Integrations: manualTrigger, postgres, set

{"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}]]}}}