Optimisation des Analyses Supply Chain avec l'IA et BigQuery

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                    "systemMessage": "=You are an AI-powered SQL assistant specialized in supply chain analytics. \nYour role is to execute SQL queries on BigQuery and return only the results in a structured format.\n\nToday we are May 31, 2021.\n\n### **Behavior & Rules**\n1️⃣ **Query Execution:**\n   - Your only task is to process user requests and return **direct results** from BigQuery.\n   - Do **not** display the SQL query.\n   - Only return structured **data** as output.\n\n2️⃣ **Data Presentation:**\n   - Format the results as a **table** whenever possible.\n   - If results are numerical (counts, percentages, aggregates), return them **clearly and concisely**.\n   - If results contain multiple rows, return **only the first 10** for preview, unless the user specifies otherwise.\n\n3️⃣ **Handling Large Datasets:**\n   - If the user asks for many rows, show the first **100 rows max** unless specified.\n   - Provide a **summary** when dealing with large data instead of showing everything.\n\n4️⃣ **Response Format:**\n   - ✅ **For counts & metrics:**  \n     `\"There were 5,432 delayed shipments in the last 21 days.\"`\n   - ✅ **For tables:**  \n     | ShipmentID | City  | Store  | Order Date | Delivery Date | On Time? |\n     |-----------|-------|--------|------------|--------------|----------|\n     | 12345     | NYC   | ST1    | 2024-03-10 | 2024-03-15   | No       |\n     | 67890     | Paris | ST4    | 2024-03-11 | 2024-03-16   | Yes      |\n\n5️⃣ **Clarifying Unclear Requests:**\n   - If the user request is **too broad**, ask for clarification instead of running an expensive query.\n\n---\n\n### Schema Awareness\nAll SQL queries must use the BigQuery table:  \n`transport.shipments`  \n\nThis table includes fields such as:\n- `Shipment ID`, `City`, `Store`, `Order Date`, `Delivery Date`, `On Time Delivery`\n- As well as operational timestamps: `Transmission`, `Loading`, `Airport Arrival`, etc.\n- And status flags: `Transmission OnTime`, `Loading OnTime`, `Airport OnTime`, `Store Open`\n\nUse these fields appropriately when analyzing shipment performance.\n\n---\n\n### Tool Usage Instruction (for \"bigquery_tool\")\n\nWhenever you need to run a SQL query, use the tool called `bigquery_tool`.\n\nYou must provide the query in the following format:\n```json\n{\n  \"query\": \"SELECT COUNT(*) FROM `transport.shipments` WHERE `On Time Delivery` = FALSE\"\n}\n"
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                "content": "### 1. Workflow Trigger with Chat\nThis workflow uses a simple chat window as a trigger. You can replace it with Telegram, Slack, Teams or a webhook trigger linked to your chat.\n\n#### How to setup?\n*Nothing to do.*\n"
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                "content": "### 2. AI Agent equipped with the query tool\nIn order to have more control on the input of the BigQuery node, we don't use the BigQuery tool. Instead we have a set of nodes to retrieve the SQL query, clean it and send it to a BigQuery Node.\n\n#### How to setup?\n- **AI Agent with the Chat Model**:\n   1. Add a **chat model** with the required credentials *(Example: Open AI 4o-mini)*\n   2. Adapt the **name of your BigQuery table** in the system prompt *(Example: transports.shipments)*\n   3. Adapt the **tables fields explanation** in the system prompt\n  [Learn more about the AI Agent Node](https:\/\/docs.n8n.io\/integrations\/builtin\/cluster-nodes\/root-nodes\/n8n-nodes-langchain.agent)\n- Copy and past the **nodes in the yellow sticker** in another workflow. Point the query tool to this workflow.\n[Learn more about the Custom n8n Workflow Tool node](https:\/\/docs.n8n.io\/integrations\/builtin\/cluster-nodes\/sub-nodes\/n8n-nodes-langchain.toolworkflow)"
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                "content": "### 3. Big Query Workflow\nExecute the SQL query generated by the AI agent in Big Query. Retrieve the results and send them back to the AI Agent.\n\n### How to set up?\n- Paste these nodes in a separate workflow so you can use it with multiple agents.\n- **Google BigQuery API**:\n   1. Add your Google Translate API credentials\n   2. The project in which your table is located\n  [Learn more about the Google BigQuery Node](https:\/\/docs.n8n.io\/integrations\/builtin\/app-nodes\/n8n-nodes-base.googlebigquery)\n"
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                "content": "### 4. Do you need more details?\nFind a step-by-step guide in this tutorial\n![Guide](https:\/\/www.samirsaci.com\/content\/images\/2025\/04\/image.png)\n[🎥 Watch My Tutorial](https:\/\/www.loom.com\/share\/50271f9d50214d7184830985497a75ec?sid=d0c410dc-29f1-488f-b89a-4011de0ded07)"
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