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In this session we covered - GROUP BY ALL - Histograms - New advice on virtual indexes - Multiple values scalar query Ask TOM ...

At Ignite 2025 we announced the support for vector indexing in the SQL Server engine, using the DiskANN algorithm that is used ...

SQL Superstar in 50 Days by Sumit Mittal To know about my Ultimate Data Engineering Program - https://www.trendytech.in ...

Range queries or Equality lookups? #sql #Backend #Databases #CodingDrill.

"For a MySQL table with ~1M rows and 50 columns, which runs faster for SUM(colA): GROUP BY or a Window Function — and ...

Did you know SQL has a shortcut to avoid writing all column names? Some SQL engines support: SELECT * EXCEPT (column1 ...

What is index in sql| why use index.

sql #sqlserver #queryoptimization #digitalskills #dataanlysis.

This video highlights top 10 skills that you will need to crack any data engineering interviews in 2026. All the resources mentioned ...

Solving LeetCode 1587: Bank Account Summary II. The SQL Trap: You calculated the Total Balance using SUM(amount).

Database Scaling Techniques Explained | Vertical vs Horizontal Scaling, Caching, Indexing & Performance Optimization As ...

9 SQL HOOKS NO ONE TELLS YOU 1️⃣ COUNT(*) ≠ COUNT(column) COUNT(*) counts rows. COUNT(column) skips NULLs.

The 'Second Highest Salary' question is a must-know for any SQL interview! Stop relying on slower, outdated methods.

Master practical techniques for identifying, creating, and optimizing SQL indexes to ensure your database runs at peak efficiency ...

In this video, we explore the DROP command in SQL in a complete and detailed manner, explaining each DROP operation step ...

GitHub repo link: https://github.com/baldez300/MySQL_database-performance-demos/tree/main Database Indexing Performance ...

SQL vs NoSQL, ACID vs BASE, Indexing, Sharding & Partitioning, Replication, Caching #systemdesign #systemdesigninterview ...