#Distinct In Sql

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Comment “SQL” to get links! 🚀 Want to master SQL without getting bored to tears? This mini roadmap takes you from “what is a database?” to solving complex crimes with code. 🎨 DrawSQL Stop trying to visualize complex databases in your head. This tool lets you build beautiful Entity Relationship Diagrams (ERDs) just by dragging and dropping. It is the best way to understand how tables relate to each other—Foreign Keys and Joins finally make sense when you can actually see them. ⚡ SQLBolt Perfect if you want to learn by doing, not reading. This site gives you bite-sized, interactive lessons right in your browser. No installation needed. You’ll race through the basics of SELECT, filtering, and aggregations with instant feedback on your code. 🕵️ SQL Murder Mystery The ultimate way to practice. There has been a murder in SQL City, and you have to solve it by querying the police database. You will use advanced logic, joins, and wildcards to find the killer. It turns “studying” into a detective game you actually want to play. 💡 With these resources you will: Visualize database architecture like a System Designer Master the syntax through hands-on repetition Build real-world problem-solving skills (and have fun doing it) If you are aiming for Data Analytics or Backend Engineering roles, these 3 tools are your cheat sheet. 📌 Save this post so you don’t lose the roadmap. 💬 Comment “SQL” and I’ll send you the direct links. 👉 Follow for more content on Coding, Data, and Tech Careers.

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NoSQL vs SQL 🤯 Guys! Everyone thinks “NoSQL for scale” when they hear social media. But this isn’t just videos. It’s users following users. Videos linked to users. Comments linked to videos. Likes linked to everything. That’s highly connected data. And if you don’t think about joins, foreign keys, and data consistency… the interviewer definitely will😭 The mistake isn’t picking NoSQL. The mistake is picking it without thinking. #softwareengineering If you’re preparing for system design interviews, save this. Follow for more🫡🤝 #dev

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SELECT DISTINCT in #sql #dataanalytics #datascience #interview

DISTINCT vs GROUP BY в SQL Якщо зручніше, також відео у моєму телеграм каналі: https://t.me/it_skills_ua/716 #фішки_it_skills_ua #SQL_IT_SKILLS #SQL #PLSQL #DataBase #JIRA #Confluence #API #JSON #XML #REST #GIT #Програмування #КурсиIT #ВивченняІТ #БазаДаних #КурсиУкраїна #ТехнологічнийСвіт #ITНавчання #Кодування #IT #СвітIT #ITКурси #Программирование #КурсыIT #ИзучениеИТ #БазаДанных #КурсыУкраина #ТехнологическийМир #ОбучениеИТ

DISTINCT keyword in SQL - SQL Exercise 6 #sql #sqlserver #sqldatabase #data #database #tech #informationtechnology

What is SQL injection?

Interesting fact: Modern databases often rely on a concept called Write-Ahead Logging (WAL), which ensures that no data is lost even if the entire system crashes mid-transaction. Before any actual change is made to the database files, the intended action is first written to a separate, persistent log; if the power cuts out, the system simply "replays" that log upon reboot to restore everything to a consistent state. This mechanism is the backbone of ACID compliance, the gold standard for reliability that prevents your bank balance from accidentally disappearing during a server glitch. Interestingly, while traditional relational databases prioritize this strict consistency, many "NoSQL" databases trade it for speed and massive scalability, allowing them to handle the staggering volume of data generated by global social media platforms.