-

 


EXISTS vs. NOT EXISTS in Oracle.

Understanding correlated subqueries can take your Oracle SQL skills to the next level. Check out this clean and visual comparison of EXISTS and NOT EXISTS—with syntax, examples, and output. Perfect for interview prep or daily development work!

 💬 Share your thoughts, post questions, or even drop a use-case from your projects.

💡 Keep Learning, Keep Evolving.

https://www.linkedin.com/feed/update/urn:li:groupPost:3920035-7317766103680655360?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAHUA7sBrzo1SCAyjeql1qiSe9GQS2mmWX4

Comments

Post a Comment

Popular posts from this blog

-
Image
  Boost Query Performance from the Start – Inline Indexing in Oracle. Many Oracle developers miss this simple yet powerful technique: Create indexes at the time of table creation. This visual guide will help you: ✅ Understand how inline indexing works ✅ Use proper syntax with constraints and indexes ✅ See real-world examples and expected outputs ✅ Learn how to verify and use created indexes effectively If you're preparing for interviews, tuning queries, or designing schemas — this is a must-know tip. Save it. Share it. Discuss it. Do you prefer creating indexes inline or separately? Why? https://www.linkedin.com/feed/update/urn:li:groupPost:3920035-7318229157186793472?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAHUA7sBrzo1SCAyjeql1qiSe9GQS2mmWX4
Read more
-
Image
  Level Up Your SQL*Plus Skills with This Handy Cheat Sheet. Whether you're debugging a script or navigating SQL*Plus buffers like a pro, knowing your editing and file commands can save you serious time. I've put together a clean and detailed table covering: ✅ All essential SQL*Plus editing commands ✅ Key file commands with examples and output ✅ Crystal-clear formatting for quick lookup https://www.linkedin.com/feed/update/urn:li:groupPost:3920035-7318294460864290816?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAHUA7sBrzo1SCAyjeql1qiSe9GQS2mmWX4
Read more

Oracle's Compliance to Codd’s Rules

-
Image
Oracle meets most of Codd’s rules, making it a relational database. Partial compliance with Logical & Distribution Independence due to application dependencies. Fails the Non subversion Rule since low-level access can bypass integrity constraints. Join the discussion on LinkedIn
Read more