أحدث منشورات Abhisek Sahu على لينكدإن

SQL is easy to start. Mastering it is a different story. Writing SELECT, FROM, and WHERE may help you retrieve data. But solving real analytical and data engineering problems requires a much deeper skill stack. Here is how SQL maturity actually progresses: → Level 1: Query Fundamentals Filter, sort, select, rena…

You can learn Data Engineering for free. You just need the right roadmap and resources. Here’s a complete learning stack with free resources for each skill: → SQL https://lnkd.in/emz3-Ndw → Python https://lnkd.in/ea68jE82 → Git https://lnkd.in/esCwZdVc → Bash / Shell https://lnkd.in/eWCsVWyD → PostgreSQL https…

Preparing for a Data Engineer interview? Start with these 20 concepts. Data Engineering interviews rarely test just one tool. They test whether you understand how data moves, how systems scale, and what trade-offs sit behind each architectural decision. Make sure you can clearly explain: → ETL vs ELT → Batch vs…

Google took 9 years. Facebook took 8. Instagram took 6. ChatGPT did it in 3. 1 billion monthly active users. Not a tech milestone. A civilisation milestone. Here's what that number actually means: 1 billion users is larger than: ↳ Every country in Europe combined ↳ North and South America combined ↳ Every Netf…

We found 67% of our Azure Synapse bill was avoidable, before anyone touched a production pipeline. I work on Azure Data Platforms and depends on high compute uptime, but monthly cloud bill was carrying massive idle weight. We tried a custom GPT wrapper on our cost data first, and it could summarize a bill but it…

You can learn Data Engineering for free. You just need the right roadmap and resources. Here’s a complete learning stack with free resources for each skill: → SQL https://lnkd.in/emz3-Ndw → Python https://lnkd.in/ea68jE82 → Git https://lnkd.in/esCwZdVc → Bash / Shell https://lnkd.in/eWCsVWyD → PostgreSQL https…