Sql Programming Tutorials, Guides & Best Practices
Explore 14+ expertly crafted sql tutorials, components, and code examples. Stay productive and build faster with proven implementation strategies and design patterns from DeveloperBreeze.
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Indexes Database Management Joins Query Optimization Performance subqueries EXPLAIN query caching MySQL tutorial database performance SELECT statements query analysis MySQL Workbench database optimization SQL best practices Primary Key database administration unique index full-text index composite index
Tutorial
mysql
Understanding and Using MySQL Indexes
Composite indexes are useful when queries involve multiple columns. Use the following syntax:
CREATE INDEX index_name ON table_name(column1, column2);Aug 12, 2024
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mysql
How to Optimize MySQL Queries for Better Performance
The output provides details like:
- Select Type: Type of query (simple, primary, subquery, etc.).
- Table: The table accessed by the query.
- Type: Type of access (e.g.,
index,ALL,ref,const). - Possible Keys: Indexes considered by the optimizer.
- Key: Index used for the query.
- Rows: Estimated number of rows examined.
- Extra: Additional information, such as whether a temporary table or file sort is used.
Aug 12, 2024
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