Workflow: Manual Postgres Automate

{
    "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
                    }
                ]
            ]
        }
    }
}