AI Assistant for SQL Database Interaction

Transform database interaction for any department using an AI assistant

Chat with SQL Databases using AI

Talk to Your Data is a conversational AI assistant that showcases how GenAI can transform database interaction by enabling natural language queries over structured SQL databases. This agent-based solution leverages LLMs and modern AI tools to translate user questions into SQL, execute them securely, visualize the results, and explain the reasoning behind each answer. It reduces response times to just 4.5 seconds, lowers the barrier for accessing and understanding data, and empowers both technical and non-technical users to make better decisions — faster and with confidence. It also highlights the transformative impact of AI in finance, retail, healthcare, and other industries, making complex data easily accessible for smarter decision-making.

Location
Canada
Industry
Service line
Software engineering
AI Assistant for SQL Database Interaction
What made this project interesting wasn't just connecting an LLM to a database — it was building the guardrails to do that safely, from OWASP-aligned threat modeling to a read-only, least-privilege data layer. Getting response times down to 4.5 seconds while keeping that security posture intact is the kind of balance we push for on every GenAI build.
Pavlo Tkhir cheif technology officer, Euristiq
Pavlo Tkhir
CTO at Euristiq

Highlights

  • Natural language to SQL transformation with high accuracy.
  • Interactive, iterative reasoning loop for improved reliability.
  • Chart-based visualization of query results.
  • Transparent reasoning with step-by-step explanations, making the conversational AI assistant’s logic easy to follow.
conversational AI assistant for SQL database interaction
Services:
  • Proof of Concept (PoC) development
  • AI solution architecture & implementation
  • Conversational AI assistant development
  • Agent-based AI system design
  • Custom AI product engineering
  • Generative AI enablement
  • GenAI security
Technologies:
  • Next.js
  • LangGraph.js
  • LangChain.js
  • OpenAI GPT-4o-mini
  • Anthropic Claude 3.7 Sonnet
  • Google Gemini Flash Lite 2.0
  • ReAct Agent
  • OWASP GenAI
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Solutions

The goal of this project was to create a conversational AI assistant that allows users to query relational databases using natural language — without needing to write SQL. The main challenge was ensuring that the AI-generated SQL statements were not only syntactically correct but also contextually relevant and successfully executed, despite the ambiguities inherent in natural language. Additional requirements included delivering AI data visualization in the form of charts, providing clear explanations of the reasoning and SQL generated, and maintaining high security and performance standards when working with sensitive data sources.

To meet these goals, the team designed an AI assistant architecture based on the ReAct (Reason + Act) paradigm, implemented using LangGraph.js and LangChain.js. The system combines smart prompting strategies with iterative reasoning and tool-based execution to reliably transform user questions into accurate SQL queries.

This conversational AI assistant integrates several key components:

  • A system prompt that guides the LLM’s behavior and enforces necessary constraints.
  • Pre-fetched database schema information to give the LLM full context without runtime delays.
  • SQL tools — such as query execution, schema inspection, and validation — exposed as callable functions for the AI agent.
  • Iterative self-refinement of SQL queries to improve accuracy.
  • Integration with multiple modern LLMs, ultimately selecting Gemini Flash Lite 2.0 for its optimal balance of speed and quality.

The interface itself was built with Next.js, supporting both frontend and backend operations. The AI data assistant generates dynamic chart configurations alongside query results, delivering AI data visualization directly to the user.

Security

Security was a critical consideration in developing this LLM-based solution, given its connection to sensitive internal databases. To ensure resilience against emerging threats, the system was assessed using the OWASP Top 10 for LLM Applications 2025 framework — a recognized standard for identifying and mitigating vulnerabilities in language model applications. This evaluation guided the team in implementing guardrails such as enforcing the principle of least privilege, preventing disclosure of system prompts or configurations, and rejecting malicious or inappropriate user queries.

The team introduced infrastructure-level safeguards to protect resources and maintain availability. These include request size limits, execution timeouts, and rate limiting to prevent excessive or abusive usage. At the database level, the team created a dedicated read-only user with access restricted only to approved tables, effectively reducing the risk of data loss or corruption. Additional measures in the SQLDatabase interface, such as ignoring sensitive tables during schema introspection, further enhanced privacy and control.

This approach reflects a broader lesson: LLM applications present a unique and complex threat landscape that demands dedicated expertise. The team recommends involving specialists to monitor and secure the system continuously, reviewing prompts and tools for misuse, and designing guardrails against injection attacks and exploitation. Treating security as a core design element — not an afterthought — was key to delivering a robust, reliable, and cost-efficient conversational AI assistant.

Who can use Talk to Your Data and for what purposes?

Conversational AI assistant Talk to Your Data is designed to solve common challenges faced by both data teams and business users. By enabling natural language queries and instant, transparent answers, it bridges the gap between technical complexity and business needs.

This AI assistant can be used across industries where data-driven decisions are critical. It helps analyze sales trends, inventory levels, and customer behavior, showcasing the value of AI in retail. In finance, it enables quick access to key financial metrics and compliance data. In manufacturing, it assists with monitoring production performance and supply chain insights. In healthcare, it supports better visibility into patient data and operational efficiency.

For data & BI teams: reduce workload, improve efficiency

Data and BI teams often face overwhelming demand for insights, much of it routine or low-value. This conversational AI assistant helps them focus on high-impact analysis while providing scalable self-service capabilities to business users.

This assistant accelerates research on new databases and enables the generation of queries of varying complexity. Miscommunication between business and technical teams is reduced. When BI teams are overloaded with requests from multiple departments, the system enables scalable self-service querying by end users, lightening the load. It also addresses questions about results and logic by showing the generated SQL queries and explaining the reasoning behind them.

Finally, it helps avoid the high costs of scaling BI teams by handling more requests without additional staff.

For business teams & managers: empower decision-making with conversational AI assistant

For managers and business users, getting timely, accurate data can be a challenge – especially without technical skills. Our conversational AI assistant removes these barriers, making insights accessible, actionable, and easy to understand.

Instead of waiting days for reports, business users can get answers instantly, avoiding bottlenecks. Even without technical expertise, they can query data in plain language, with no need for SQL or BI tool training. This reduces the risk of incomplete decision-making by providing clear, repeatable, and reliable insights. Limited visibility into trends and key metrics is addressed by enabling near real-time access to dashboards and charts. The system also removes confusion about how results are generated by displaying the SQL and explaining the logic behind each answer. By speeding up insights, it helps identify trends earlier, reducing missed opportunities.

For business leaders who say, “I know the data is there, but I just can’t get to it,” or “I don’t want to wait three days for a report,” this AI assistant delivers a faster, smarter way to uncover insights and make better decisions — right when they matter most. By unlocking access to data trapped in silos and streamlining the analytics process, this solution helps organizations avoid missed opportunities and act with confidence.

Results

Transformed database interaction for any department using an AI assistant

We successfully delivered a fully functional Proof of Concept within just 3 weeks. The solution is a conversational AI assistant that lets users ask questions about their data in plain language, without writing SQL. The system automatically translates these questions into accurate SQL queries, executes them securely, visualizes the results as charts, and explains the logic behind the answer.

This AI assistant significantly improved user experience by delivering response in approximately 4.5 seconds, thanks to optimized architecture and smart model selection.

We proved that an agent-based, iterative reasoning approach works better than traditional BI tools, supporting flexibility, high accuracy, and compatibility with multiple AI models.

Finally, the solution provides a secure, scalable way to make structured data accessible to everyone — empowering business and technical teams alike to explore data, generate charts, and make decisions faster and with confidence.

 

4,5
sec
average query response time after optimization (down from 50 sec)
4
tools
ensure reliable query execution and result validation
3
weeks
weeks from concept to a fully working Proof of Concept.
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