Blog - K2view

LLM SQL Agents: Empowering Business Users to Query Data in Plain English

Written by Iris Zarecki | December 22, 2024

An LLM SQL agent accurately converts text queries into SQL commands to increase productivity and enable users to access enterprise data easily. 

What is an LLM SQL Agent? 

An LLM SQL agent is a large language model that can interact with databases using structured query language. SQL agents are LLM agents that translate natural language queries into SQL commands to retrieve data from relational databases. LLM agents are core to agentic AI frameworks, like Retrieval-Augmented Generation (RAG) and Table-Augmented Generation (TAG). These frameworks integrate your private enterprise data -- structured and unstructured -- with the publicly available information your foundational LLM was trained on, to enhance the accuracy and contextual awareness of your model’s responses to user queries.  

SQL agents often work together with other agents in a ReACT agent LLM based on chain-of-thought reasoning. The collaboration of these LLM-powered autonomous agents enable the model respond to queries more accurately and protect sensitive data more effectively. An SQL agent LLM also simplifies data access and, by doing so, makes analytics more accessible to non-technical users.   

How does an LLM SQL agent work? 

By combining the power of large language models, schema awareness, and SQL, an LLM SQL agent streamlines the entire process of querying databases by: 

  • Interpreting natural language queries 

  • Converting them into SQL commands 

  • Executing the queries 

  • Responding in an easy-to-understand format 

The process starts when a user asks a question like, “What were the top five products sold last month?” The LLM SQL agent first uses an LLM to understand the context of the question by identifying the key query components, like the time period (“last month”) and the subject (“top five products”).

Once the user’s intent is understood, the agent uses the organization's data schemas to generate a corresponding SQL command. The richer the metadata of the schemas, the more accurate the SQL query will be. This is where a semantic data layer, powered by an augmented data catalog, comes in handy.

Next, the agent executes the SQL command against the databases. Once the raw data is retrieved from the database, the LLM processes it and presents the results in the context of the user's prompt.

AI agents can invoke an LLM SQL agent to dynamically retrieve the needed data, without having to create numerous hardcoded AI tools for specific data queries. Likewise, users need not write SQL code themselves, enabling them to focus on analyzing the data rather than dealing with complex queries. 

Challenges and limitations of an LLM SQL agents 

While an LLM SQL agent offers significant advantages, it also has its challenges and limitations. For example, it might have difficulty:  

  1. Handling complex queries

    An LLM SQL agent can struggle with highly complex queries, notably in environments where data is fragmented across multiple databases. They might also have trouble understanding nuanced business logic, leading to LLM hallucinations

  2. Ensuring data security  

    As LLMs process natural language inputs, they may inadvertently expose sensitive data. For instance, an LLM SQL agent might return information that’s restricted by access controls or that displays an individual’s Personally Identifiable Information (PII).  

  3. Generating accurate SQL commands   

    Although LLMs are very advanced, they aren’t perfect. They can generate SQL queries that are syntactically correct, but semantically wrong, resulting in the retrieval of inaccurate or incomplete data – due to difficulties with NLP or over-reliance on your LLM’s training data.  

  4. Overcoming the limitations of your LLM's training data   

    The effectiveness of an SQL agent LLM depends on the quality of its training data. If the model hasn’t been trained on a wide variety of queries or doesn’t understand a particular domain, it may not be able to handle certain types of tasks. What’s more, if the underlying training data is biased or flawed, the model’s output can reflect those biases. 

Empowering SQL agents with Table-Augmented Generation

Table-Augmented Generation (TAG) can make SQL agents powered by LLMs much more effective by letting them access and unify information from multi-source database tables. This means an SQL agent can answer questions or generate reports based on the latest and most complete data, even when that data comes from different systems. By using TAG, SQL agents don’t need complex manual queries for every database—TAG brings the necessary data together, so the LLM can use it to create accurate, helpful responses to user requests.

 

LLM SQL agent use cases 

An LLM SQL agent lets you leverage your data more efficiently. Use cases include: 

  • Business intelligence 

    An LLM SQL agent is particularly valuable for non-technical users who need to access and analyze data but lack SQL experience. By allowing your team members to ask questions in natural language, your AI SQL agent democratizes data and insights. 

  • Customer support   

    An LLM SQL agent enables real-time access to the customer data in your enterprise systems – allowing customer support agents to quickly retrieve customer information, order history, or payment status by interacting with a RAG chatbot

  • Report automation  

    LLM SQL agents can automate the process of generating reports by interpreting user queries and translating them into SQL commands. For instance, instead of relying on BI teams to preconfigure reports, business users can simply prompt, “Generate a report on sales performance for the past year, broken down by territory and quarter.” 

  • Data integration

    In enterprises with complex data systems, an LLM SQL agent can simplify data integration by accelerating data engineering. Whether data is in a CRM, ERP, or other internal system, AI SQL agents offer a uniform interface for querying multi-source data.  

Ensuring LLM SQL agent accuracy and performance with K2view 

K2view assures LLM SQL agent performance and accuracy by leveraging a metadata-rich semantic data layer that is optimized for LLM SQL agents. This LLM text-to-SQL approach improves the quality and relevance of your GenAI app responses by: 

  1. Accessing real-time data directly from your source systems

  2. Protecting sensitive data or PII (Personally Identifiable Information) dynamically during a query execution

  3. Responding in milliseconds to support conversational AI use cases

  4. Guardrailing your data so that only authorized users (or AI agents) have access to the data they query 

Discover K2view GenAI Data Fusion, the RAG tool with full support for LLM SQL agents.