PostgreSQL Query Rewriting Techniques The previous articles in this series covered performance problems you fix by adding indexes, restructuring joins, or tuning memory. This one is about the queries where the plan is "fine" — every node is doing something reasonable — but the query itself is asking the wrong question, producing unnecessarily large intermediate results or forcing the planner dow
If you’ve ever tried to set up an Intel RealSense camera with ROS 2 on a fresh machine, you already know the pattern: it works on one system, then breaks on another, and you lose time chasing environment differences. That’s why I put together realsense-ros2-docker — a small, focused repository that provides a simple Dockerfile for RealSense bring-up with ROS 2. Repo: https://github.com/SAJIB3489/r
SQL is widely known for data querying and manipulation but systems do grow; data becomes larger; processes become repetitive and operations become sensitive. SQL has some features which enables it to be considered a fully fledged programming language. Some of the features which I discuss in this article are procedures, functions and transactions. Each of these concepts serve distinct purposes. Sto
Hi 👋, In this post we shall explore Bedrock's structured KB with this architecture: Upload CSVs to S3 > SNS Queue > Crawl data with Glue > Query with Redshift > Bedrock KB > Query with LLM. Let's do some of this with code. Let's get started. Clone the repo and switch to the project directory. git clone [email protected]:networkandcode/networkandcode.github.io.git cd structured-kb-demo/ Do a uv sync
Arduino VENTUNO Q บอร์ด AI ตัวใหม่จาก Arduino ที่ทำให้ AI อยู่ในมือ maker ทุกคน 🤖 Arduino �เพิ่งประกาศเปิดตัว VENTUNO Q บอร์ดใหม่ล่าสุดที่ใช้พลังจาก Qualcomm Dragonwing IQ8 Series ซึ่งถูกออกแบบมาเพื่อ AI, Robotics และ Actuation โดยเฉพาะ NPU Acceleration สูงสุด 40 TOPS — พลังประมวลผล AI ระดับอุตสาหกรรม Dual-Brain Architecture — รวมพลังระหว่าง Qualcomm chip กับ STM32H5 microcontroller สำหรับ low-
The Problem (3 paragraphs) MuJoCo is the fastest-growing robotics simulator Converting URDF to MJCF is painful (./compile is buggy, urdf2mjcf ignores off-diagonal inertia, mesh paths break) You just want to convert and start training your RL agent The Solution (show curl + Python code) @robot.urdf" import roboinfra Real Example (use your preview_test_arm.urdf) Show the input URDF (6 links, 5 j
The problem (3 sentences) ROS CI pipelines are slow because check_urdf needs full ROS install Most GitHub Actions runners don't have ROS You just want to catch broken joint refs before merging The solution (show the YAML) 6 lines of GitHub Action config No ROS install, no Docker, runs in 5 seconds Real example (screenshot) Show NASA Robonaut 2 URDF passing validation Show a broken URDF failing wit
Subqueries vs. CTEs in SQL: A Practical Guide to Writing Cleaner, Smarter Queries Whether you're just getting comfortable with SQL or leveling up your data skills, two tools will come up again and again when working with complex queries: subqueries and Common Table Expressions (CTEs). They solve similar problems — breaking a complex query into manageable pieces — but they do it in different ways