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Subqueries vs CTEs in SQL: A Complete Guide for Beginners
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DEV Community · Technology

Subqueries vs CTEs in SQL: A Complete Guide for Beginners

When I first started learning SQL, I kept hearing two terms thrown around: subqueries and CTEs. They seemed to do similar things, and I wasn't sure when to use one over the other. If you're in the same boat, this guide will clear everything up. By the end of this article, you'll understand: What...

Kigen Tarus
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Building a Windows yt-dlp GUI with Tauri, React, and Rust
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DEV Community · Technology

Building a Windows yt-dlp GUI with Tauri, React, and Rust

I built HalalDL because I wanted a Windows-first desktop workflow for yt-dlp that did not hide what yt-dlp was doing. yt-dlp is already powerful. The problem I wanted to solve was not the engine. It was the day-to-day Windows experience around it: setup, presets, ffmpeg, tool paths, logs, and insta...

HalalFrFr
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Future Museum of Extinct Things - A Glimpse from 2100
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DEV Community · Technology

Future Museum of Extinct Things - A Glimpse from 2100

This is a submission for Weekend Challenge: Earth Day Edition What I Built By 2100, most of what you’re about to see is already gone. This is a museum built from that absence - an archive of what humanity lost during the Anthropocene. The premise is simple: curators from the future buil...

Thea
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Deepfakes Explained — From Vectors to the Decoder Swap (Interactive)
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DEV Community · Technology

Deepfakes Explained — From Vectors to the Decoder Swap (Interactive)

Most explanations of deepfakes start with "AI swaps faces." That's like explaining a car engine by saying "it goes vroom." I wanted to understand the math — so I built a blog post that walks through it from scratch. The result: 13 chapters, 6 interactive demos, and a real autoencoder running in you...

Mathias Leonhardt
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I Run 14 AI Agents in Production. Here Are the 6 Rules That Survived.
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DEV Community · Technology

I Run 14 AI Agents in Production. Here Are the 6 Rules That Survived.

I run a marketing agency. Instead of hiring more people, I built an AI agent army using Claude Code. 14 specialized agents handling pipeline, inbox, call center, project management, ad analytics, frontier intelligence, and more. After 6 months in production, these are the rules that survived....

david-steel
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Rat poison found in baby food jar in Austria after product recall
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The Guardian · World

Rat poison found in baby food jar in Austria after product recall

Police say poison detected in jar of HiPP carrots and potatoes as maker says items may have been tampered withRat poison has been found in a jar of HiPP baby food, police in Austria have said, after a recall of the product from more than 1,000 Spar supermarkets in the country over safety fears.Polic...

Reuters in Geneva
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Vodafone incentivised security staff to fine its own franchisees
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The Guardian · World

Vodafone incentivised security staff to fine its own franchisees

Shopkeepers charged millions of pounds, including alleged £10,000 penalty for mistake that cost firm £7.08Vodafone incentivised its security staff to increase “clawbacks” levied on its own franchisees, as part of a programme that led to the telecoms group fining its own shopkeepers millions of pound...

Simon Goodley
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Bulgaria votes as pro-Russian former president leads in the polls
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The Guardian · World

Bulgaria votes as pro-Russian former president leads in the polls

Eighth election in five years follows government collapse in December, with stability and cost of living among key issuesBulgarians are voting in the eighth parliamentary election in five years, with the clear frontrunner, the pro-Russian former president Rumen Radev, promising to stamp out corrupti...

Reuters in Sofia
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Police investigate attempted arson attack at north-west London synagogue
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The Guardian · World

Police investigate attempted arson attack at north-west London synagogue

Minor smoke damage and no injuries reported at synagogue in Harrow, after spate of similar incidents in recent weeksAn attempted arson attack has been reported at a north-west London synagogue, after a spate of similar incidents.The incident at Kenton United Synagogue in Harrow on Saturday night cau...

Jamie Grierson
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Yotei - Highly modular & customizable SwiftUI calendar
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DEV Community · Technology

Yotei - Highly modular & customizable SwiftUI calendar

I built a calendar package for iOS that focuses on modularity, customization, and performance. GitHub: https://github.com/claustrofob/Yotei Why I built it I kept rewriting calendars across projects and couldn’t find something that was both flexible and performant. Most solutions were either pure...

Mikalai Zmachynski
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Building a Carbon Footprint Tracker with Google Gemini for Earth Day
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DEV Community · Technology

Building a Carbon Footprint Tracker with Google Gemini for Earth Day

This is a submission for Weekend Challenge: Earth Day Edition What I Built Every time I opened a news tab this week, there was another story about rising temperatures, melting glaciers, or record-breaking carbon emissions. It hit me differently this Earth Day. I am a developer. I have to...

Ha3k
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