RESEARCH REPORT

Metadata: The Critical Foundation for AI Agents & Natural Language to SQL
Use Cases

How context improves AI-generated SQL accuracy by 38%, powering
enterprise AI workflows at scale.

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We tested 522 queries.

Here's what makes AI-generated SQL actually work.

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Inside the Report

What's Inside

Take a deep dive into our testing methodology and results.

The AI-Data Challenge

The promises, hidden complexities, and failure points of natural language data access.

The Metadata Advantage

What makes metadata effective for AI, and the role of semantic layers and data catalogs.

Cost-Benefit Analysis

Upfront investments, ROI, benchmarks, and cost optimization strategies.

Implementation & Implications

The 3-step implementation guide, quick start checklist, and talk-to-data initiatives.

Why This Matters

95%
Failure rate of AI pilots in production
38%
SQL accuracy improvement with rich semantic metadata
2,662%
ROI from SQL accuracy improvements

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The Problem

Why AI fails without context.

LLMs can now generate syntactically correct SQL from natural language. But there’s a catch.

What’s syntactically correct is often semantically wrong.

Countless failed production rollouts prove that generating a query isn’t the challenge. It’s generating the right query – one that understands business logic, unwritten rules, and specific database conventions.
See how it's done
The Solution

Our Approach

3-Pronged Evaluation Architecture

SQL generation, multi-layer validation, and LLM-as-judge

522 Evaluations

Testing the same 174 queries to achieve 95% confidence intervals

4 Principles for Metadata Effectiveness

Analysis-based test optimizations.

Real-World Value Benchmarks

Using verified stats to measure ROI

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Atlan named a Leader in 2026 Gartner® Magic Quadrant™ for D&A Governance. Read Report →

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