workflow.json

{
  "nodes": [
    {
      "parameters": {},
      "id": "d0b0c6c0-0b0c-4b0c-8b0c-0b0c0b0c0b0c",
      "name": "When clicking \"Execute Workflow\"",
      "type": "n8n-nodes-base.manualTrigger",
      "typeVersion": 1,
      "position": [
        820,
        360
      ]
    },
    {
      "parameters": {
        "operation": "executeQuery",
        "query": "SELECT version();"
      },
      "id": "e1b1c7c1-1b1c-5b1c-9b1c-1b1c1b1c1b1c",
      "name": "Postgres",
      "type": "n8n-nodes-base.postgres",
      "typeVersion": 1,
      "position": [
        1040,
        360
      ],
      "credentials": {
        "postgres": {
          "id": "postgres-creds",
          "name": "Local Postgres"
        }
      }
    }
  ],
  "connections": {
    "When clicking \"Execute Workflow\"": {
      "main": [
        [
          {
            "node": "Postgres",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}