SQL Performance Battle: GROUP BY vs. Self-Join in UPDATE Queries
Introduction Updating records efficiently is a crucial aspect of database optimization. A poorly optimized query…
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Optimizing GROUP BY in MySQL: Insights from Real-Life Query Analysis
My current query: SELECT eod.date, SUM(eod.stable_price) AS sumStablePrice FROM item_eod eod WHERE eod.date >= CURRENT_DATE…
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Laragon: The Ultimate Lightweight Development Environment for Windows
Introduction Setting up a local development environment is often a daunting task for developers. Tools…
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LIKE vs Full-Text Search: SQL Performance and Use Cases
Position: Senior Software Engineer Interview Time: Nov 2024 Company Type: Ride-hailing Company Name: Uber &…
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Top 10 Database Optimization and Recovery Strategies for Senior Software Engineers
Position: Senior Software Engineer Interview Time: Nov 2024 Company Type: Insurance & User Management Company…
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Database Mastery: Essential Knowledge for Senior Engineers
Position: Senior Software Engineer Interview Time: Sep 2024 Company Type: Health Care Company Name: Private…
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Enhancing Text Search in MySQL: A Comparison of SOUNDEX and Full-Text Search
In many applications, efficient text search capabilities are critical for delivering fast and relevant results…
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PostgreSQL
Postgres Index Methods: Things you need to know
In PostgreSQL, different types of index methods are used to optimize query performance, especially for…
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Architecture & Design
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How to prevent table lock when add/drop index in Postgres?
The CONCURRENTLY option in PostgreSQL is used when creating or dropping indexes to avoid locking…
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Understanding the Limits of LIMIT and OFFSET for Large Datasets
Introduction When dealing with large datasets (e.g., over 100 million records), using LIMIT and OFFSET…