Text2SQL Implementation - Part 2: LangGraph Agent Flow, SQL Retry Logic, Memory & RAGAS Evaluation

This is Part-2 of the Text2SQL implementation series, where we build the core agentic intelligence of the system using LangGraph. In this video, I implement a production-ready LangGraph flow that safely converts natural language into SQL, executes it, corrects mistakes automatically, and generates final answers — all while tracking memory and evaluating quality using RAGAS. What’s Covered in This Video 🔹 Query validation node to check user intent & genuineness 🔹 SQL generation node using LLMs 🔹 Secure SQL execution with safety & standard checks 🔹 Retry & correction mechanism for incorrect SQL generation 🔹 Final answer generation from LLM 🔹 RAGAS-based evaluation for correctness & reliability 🔹 Full LangGraph construction: nodes, edges & compilation 🔹 LangGraph memory usage for handling multi-turn queries 🔹 Live testing with different user queries Everything is implemented step by step with clean, modular, production-style code, making this video ideal for anyone building enterprise-grade Text2SQL or agentic data systems. 👉 This video completes the intelligence layer of the Text2SQL project. 👉 Watch Part-1 if you want to understand the DB & schema setup first. __________________________________________ 🔀 Sorting:    • Sorting Algorithms | At A Glance!   🔍 Searching Algorithms:    • Searching Algorithms | At A Glance!   🔢 Arrays in Python:    • Arrays | At A Glance!   🧮 White Box Testing Numerical:    • White Box Testing | At A Glance!   📈 Big Data Analytics:    • Big Data Analytics | At A Glance!   Applied Data Science:    • Applied Data Science | At A Glance!   🤖 Deep Learning:    • Deep Learning | At A Glance!   Generative AI:    • Generative AI | At A Glance!   🔗 Blockchain and DLT:    • Blockchain and DLT | At A Glance!   ❤️Heart Disease Prediction using Machine Learning Project:    • Heart Disease Prediction | End to End Mach...   100 Days of SQL:    • 100 Days of Decoding SQL | At A Glance!   🐍 Python Small Projects:    • Python Small Projects! | At A Glance!   Subscribe to At A Glance! Buy me a coffee: https://www.buymeacoffee.com/ataglanc... Join Telegram: https://t.me/ataglanceofficial Official Website: https://ataglanceofficial.netlify.com/ Follow me on Instagram:   / at_a_glance_official   __________________________________________