Beyond Nested Queries: A Practical Guide to SQL Subquery Flattening
Subquery flattening technique eliminates derived tables, boosting SQL performance by 37.57% in SAP financial query case study.
Rebooter.S
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6 min
Tag: Database Optimization
16 posts
Optimize MySQL OR Conditions: A UNION Rewrite Guide
MySQL OR Condition Optimization: A Practical Guide to Performance Improvement with UNION Rewrite
Rebooter.S
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8 min
MySQL COUNT Scalar Subquery Optimization: The Complete Guide
This article demonstrates how optimizing COUNT subqueries to IN clauses boosts MySQL performance by 99%, with detailed examples and execution plan analysis.
Rebooter.S
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5 min
Lesson 37 of the SQL Optimization Course: Hash Partitioning
Explore MySQL hash partitioning for efficient equality queries, learn optimization techniques, and understand LINEAR HASH trade-offs.
ytt
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8 min
10 Most Common SQL Interview Questions and How to Answer Them
Prepare for your SQL Interview with the top 10 questions and expert answers covering joins, constraints, normalization, and query optimization.
SQLFlash
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20 min
Lesson 36 of the SQL Optimization Course: Time-Based Partitioning Case Study
Time-based partitioning in MySQL optimizes query performance for large datasets by enabling partition pruning and automated data lifecycle management.
ytt
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7 min
Lesson 35 of the SQL Optimization Course: Optimizing MySQL Partitioned Tables for Time Series Queries
Learn advanced techniques to enhance query performance on MySQL time-based partitioned tables. Master partition pruning, SQL rewriting, and partition hints for large-scale data optimization.
ytt
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3 min
HAVING Condition Pushdown: Optimizing Query Performance
Learn how HAVING condition pushdown optimizes SQL queries by 17% faster execution and 25% reduced rows scanned through automated index utilization and execution plan analysis.
Rebooter.S
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5 min
Lesson 33 of the SQL Optimization Course: Time-Based Partitioning Strategies
Learn how to implement MySQL time-based partitioning by year, month, and day dimensions. Follow practical examples for large-scale data management and query optimization.
ytt
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4 min
Lesson 32 of the SQL Optimization Course: Optimizing MySQL Performance with Native Partitioning Techniques
Discover how MySQL’s native partitioning enhances query speed, simplifies operations, and optimizes resource usage for large datasets. Learn practical techniques for range queries, updates, and data management.
ytt
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2 min