Optimizing Slow SQL Queries For Database Efficiency
Slow SQL queries impact app performance. Identify common issues like indexing, joins, and sorting, then optimize using techniques like connection pooling and query rewriting.
Slow SQL queries can severely impact the performance of an application, especially when dealing with large datasets. Understanding common slow SQL query patterns and optimizing them is critical for database efficiency. Below are some common SQL slow query patterns and strategies on how to optimize them, followed by a detailed explanation of when to use certain optimizations and when not to. 1. Missing Indexes Why it’s slow: Without indexes, SQL must scan the entire table (full table scan) to find relevant rows. How to optimize: Add appropriate indexes on columns used in WHERE, JOIN,...