Dialogar con la base de datos PostgreSQL

Intermedio

Este es unEngineering, Product, AI, IT Opsflujo de automatización del dominio deautomatización que contiene 11 nodos.Utiliza principalmente nodos como PostgresTool, Agent, ChatTrigger, LmChatOpenAi, MemoryBufferWindow, combinando tecnología de inteligencia artificial para lograr automatización inteligente. Dialogar con la base de datos PostgreSQL

Requisitos previos
  • Información de conexión de la base de datos PostgreSQL
  • Clave de API de OpenAI
Vista previa del flujo de trabajo
Visualización de las conexiones entre nodos, con soporte para zoom y panorámica
Exportar flujo de trabajo
Copie la siguiente configuración JSON en n8n para importar y usar este flujo de trabajo
{
  "id": "eOUewYsEzJmQixI6",
  "meta": {
    "instanceId": "77c4feba8f41570ef06dc76ece9a6ded0f0d44f7f1477a64c2d71a8508c11faa",
    "templateCredsSetupCompleted": true
  },
  "name": "Chat with Postgresql Database",
  "tags": [],
  "nodes": [
    {
      "id": "6501a54f-a68c-452d-b353-d7e871ca3780",
      "name": "Cuando se recibe un mensaje de chat",
      "type": "@n8n/n8n-nodes-langchain.chatTrigger",
      "position": [
        -300,
        -80
      ],
      "webhookId": "cf1de04f-3e38-426c-89f0-3bdb110a5dcf",
      "parameters": {
        "options": {}
      },
      "typeVersion": 1.1
    },
    {
      "id": "cd32221b-2a36-408d-b57e-8115fcd810c9",
      "name": "Agente de IA",
      "type": "@n8n/n8n-nodes-langchain.agent",
      "position": [
        0,
        -80
      ],
      "parameters": {
        "agent": "openAiFunctionsAgent",
        "options": {
          "systemMessage": "You are DB assistant. You need to run queries in DB aligned with user requests.\n\nRun custom SQL query to aggregate data and response to user. Make sure every table has schema prefix to it in sql query which you can get from `Get DB Schema and Tables List` tool.\n\nFetch all data to analyse it for response if needed.\n\n## Tools\n\n- Execute SQL query - Executes any sql query generated by AI\n- Get DB Schema and Tables List - Lists all the tables in database with its schema name\n- Get Table Definition - Gets the table definition from db using table name and schema name"
        }
      },
      "typeVersion": 1.7
    },
    {
      "id": "8accbeeb-7eaf-4e9e-aabc-de8ab3a0459b",
      "name": "OpenAI Modelo de Chat",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
        -60,
        160
      ],
      "parameters": {
        "model": {
          "__rl": true,
          "mode": "list",
          "value": "gpt-4o-mini"
        },
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "48uG61Ilo8jndw3r",
          "name": "Your OpenAI Account Credentials"
        }
      },
      "typeVersion": 1.2
    },
    {
      "id": "11f2013f-a080-4c9e-8773-c90492e2c628",
      "name": "Obtener Definición de Tabla",
      "type": "n8n-nodes-base.postgresTool",
      "position": [
        780,
        140
      ],
      "parameters": {
        "query": "select\n  c.column_name,\n  c.data_type,\n  c.is_nullable,\n  c.column_default,\n  tc.constraint_type,\n  ccu.table_name AS referenced_table,\n  ccu.column_name AS referenced_column\nfrom\n  information_schema.columns c\nLEFT join\n  information_schema.key_column_usage kcu\n  ON c.table_name = kcu.table_name\n  AND c.column_name = kcu.column_name\nLEFT join\n  information_schema.table_constraints tc\n  ON kcu.constraint_name = tc.constraint_name\n  AND tc.constraint_type = 'FOREIGN KEY'\nLEFT join\n  information_schema.constraint_column_usage ccu\n  ON tc.constraint_name = ccu.constraint_name\nwhere\n  c.table_name = '{{ $fromAI(\"table_name\") }}'\n  AND c.table_schema = '{{ $fromAI(\"schema_name\") }}'\norder by\n  c.ordinal_position",
        "options": {},
        "operation": "executeQuery",
        "descriptionType": "manual",
        "toolDescription": "Get table definition to find all columns and types"
      },
      "credentials": {
        "postgres": {
          "id": "nGI61D0TEEZz18rr",
          "name": "Your Postgresql Database Credentials"
        }
      },
      "typeVersion": 2.5
    },
    {
      "id": "760bc9bc-0057-4088-b3f0-3ee37b3519df",
      "name": "Nota Adhesiva",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -300,
        -240
      ],
      "parameters": {
        "color": 5,
        "width": 560,
        "height": 120,
        "content": "### 👨‍🎤 Setup\n1. Add your **postgresql** and **OpenAI** credentials.\n2. Click **Chat** button and start asking questions to your database.\n3. Activate the workflow and you can make the chat publicly available."
      },
      "typeVersion": 1
    },
    {
      "id": "0df33341-c859-4a54-b6d9-a99670e8d76d",
      "name": "Historial de Chat",
      "type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
      "position": [
        120,
        160
      ],
      "parameters": {},
      "typeVersion": 1.3
    },
    {
      "id": "4938b22e-f187-4ca0-b9f1-60835e823799",
      "name": "Nota Adhesiva3",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        360,
        300
      ],
      "parameters": {
        "color": 7,
        "width": 562,
        "height": 156,
        "content": "🛠️ Tools Used:\n1. Execute SQL Query: Used to execute any query generated by the agent.\n2. Get DB Schema and Tables List: It returns the list of all the tables with its schema name.\n3. Get Table Definition: It returns table details like column names, foreign keys and more of a particular table in a schema."
      },
      "typeVersion": 1
    },
    {
      "id": "39780c78-4fbc-403e-a220-aa6a4b06df8c",
      "name": "Nota Adhesiva1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -100,
        300
      ],
      "parameters": {
        "color": 7,
        "width": 162,
        "height": 99,
        "content": "👆 You can exchange this with any other chat model of your choice."
      },
      "typeVersion": 1
    },
    {
      "id": "28a5692c-5003-46cb-9a09-b7867734f446",
      "name": "Nota Adhesiva2",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        100,
        300
      ],
      "parameters": {
        "color": 7,
        "width": 162,
        "height": 159,
        "content": "👆 You can change how many number of messages to keep using `Context Window Length` option. It's 5 by default."
      },
      "typeVersion": 1
    },
    {
      "id": "c18ced71-6330-4ba0-9c52-1bb5852b3039",
      "name": "Ejecutar Consulta SQL",
      "type": "n8n-nodes-base.postgresTool",
      "position": [
        380,
        140
      ],
      "parameters": {
        "query": "{{ $fromAI(\"sql_query\", \"SQL Query\") }}",
        "options": {},
        "operation": "executeQuery",
        "descriptionType": "manual",
        "toolDescription": "Get all the data from Postgres, make sure you append the tables with correct schema. Every table is associated with some schema in the database."
      },
      "credentials": {
        "postgres": {
          "id": "nGI61D0TEEZz18rr",
          "name": "Your Postgresql Database Credentials"
        }
      },
      "typeVersion": 2.5
    },
    {
      "id": "557623c6-e499-48a6-a066-744f64f8b6f3",
      "name": "Obtener Esquema y Lista de Tablas de la BD",
      "type": "n8n-nodes-base.postgresTool",
      "position": [
        580,
        140
      ],
      "parameters": {
        "query": "SELECT \n    table_schema,\n    table_name\nFROM information_schema.tables\nWHERE table_type = 'BASE TABLE'\n    AND table_schema NOT IN ('pg_catalog', 'information_schema')\nORDER BY table_schema, table_name;",
        "options": {},
        "operation": "executeQuery",
        "descriptionType": "manual",
        "toolDescription": "Get list of all tables with their schema in the database"
      },
      "credentials": {
        "postgres": {
          "id": "nGI61D0TEEZz18rr",
          "name": "Your Postgresql Database Credentials"
        }
      },
      "typeVersion": 2.5
    }
  ],
  "active": false,
  "pinData": {},
  "settings": {
    "executionOrder": "v1"
  },
  "versionId": "10c7c74e-b383-4ac7-8cb2-c9a15a2818fe",
  "connections": {
    "0df33341-c859-4a54-b6d9-a99670e8d76d": {
      "ai_memory": [
        [
          {
            "node": "cd32221b-2a36-408d-b57e-8115fcd810c9",
            "type": "ai_memory",
            "index": 0
          }
        ]
      ]
    },
    "c18ced71-6330-4ba0-9c52-1bb5852b3039": {
      "ai_tool": [
        [
          {
            "node": "cd32221b-2a36-408d-b57e-8115fcd810c9",
            "type": "ai_tool",
            "index": 0
          }
        ]
      ]
    },
    "8accbeeb-7eaf-4e9e-aabc-de8ab3a0459b": {
      "ai_languageModel": [
        [
          {
            "node": "cd32221b-2a36-408d-b57e-8115fcd810c9",
            "type": "ai_languageModel",
            "index": 0
          }
        ]
      ]
    },
    "11f2013f-a080-4c9e-8773-c90492e2c628": {
      "ai_tool": [
        [
          {
            "node": "cd32221b-2a36-408d-b57e-8115fcd810c9",
            "type": "ai_tool",
            "index": 0
          }
        ]
      ]
    },
    "6501a54f-a68c-452d-b353-d7e871ca3780": {
      "main": [
        [
          {
            "node": "cd32221b-2a36-408d-b57e-8115fcd810c9",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "557623c6-e499-48a6-a066-744f64f8b6f3": {
      "ai_tool": [
        [
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            "node": "cd32221b-2a36-408d-b57e-8115fcd810c9",
            "type": "ai_tool",
            "index": 0
          }
        ]
      ]
    }
  }
}
Preguntas frecuentes

¿Cómo usar este flujo de trabajo?

Copie el código de configuración JSON de arriba, cree un nuevo flujo de trabajo en su instancia de n8n y seleccione "Importar desde JSON", pegue la configuración y luego modifique la configuración de credenciales según sea necesario.

¿En qué escenarios es adecuado este flujo de trabajo?

Intermedio - Ingeniería, Producto, Inteligencia Artificial, Operaciones de TI

¿Es de pago?

Este flujo de trabajo es completamente gratuito, puede importarlo y usarlo directamente. Sin embargo, tenga en cuenta que los servicios de terceros utilizados en el flujo de trabajo (como la API de OpenAI) pueden requerir un pago por su cuenta.

Información del flujo de trabajo
Nivel de dificultad
Intermedio
Número de nodos11
Categoría4
Tipos de nodos6
Descripción de la dificultad

Adecuado para usuarios con experiencia intermedia, flujos de trabajo de complejidad media con 6-15 nodos

Autor
KumoHQ

KumoHQ

@kumohq

AI Automation agency with over 3 years experience helping businesses to streamline their manual processes using AI agents. Use our link to book a free consultation for custom AI solutions and workflows.

Enlaces externos
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Categorías

Categorías: 34