Optimize SQL Performance with Query Tuning Exercises with Solutions
Performance Tuning and Optimization Exercises with solutions [20 exercises with solution]
1. Writing Efficient Queries by Avoiding Unnecessary Joins
Write a SQL query to retrieve data without unnecessary joins.
2. Using Indexes to Improve Query Performance
Write a SQL query to create an index on a frequently queried column.
3. Analyzing Query Execution Plans
Write a SQL query to analyze the execution plan of a query.
4. Avoiding SELECT * for Better Performance
Write a SQL query to retrieve only specific columns instead of using SELECT.
5. Using Covering Indexes for Faster Queries
Write a SQL query to create a covering index for a query.
6. Optimizing Queries with WHERE Clauses
Write a SQL query to optimize filtering with a WHERE clause.
7. Using EXISTS Instead of IN for Subqueries
Write a SQL query to replace IN with EXISTS for better performance.
8. Partitioning Large Tables for Improved Performance
Write a SQL query to partition a large table.
9. Updating Statistics for Query Optimization
Write a SQL query to update statistics for a table.
10. Using Temporary Tables for Intermediate Results
Write a SQL query to use a temporary table for intermediate results.
11. Using Query Hints for Performance Optimization
Write a SQL query to use query hints to optimize performance.
12. Optimizing Queries with Window Functions
Write a SQL query to replace self-joins with window functions for better performance.
13. Reducing Lock Contention with NOLOCK Hint
Write a SQL query to use the NOLOCK hint to reduce lock contention.
14. Optimizing Aggregations with Indexed Views
Write a SQL query to create an indexed view for faster aggregations.
15. Using Parameterized Queries to Prevent Re-compilation
Write a SQL query to use parameterized queries for consistent execution plans.
16. Optimizing Joins with Proper Indexing
Write a SQL query to optimize joins by ensuring proper indexing.
17. Using Stored Procedures for Query Reuse
Write a SQL stored procedure to encapsulate and reuse a frequently executed query.
18. Optimizing Bulk Inserts with Minimal Logging
Write a SQL query to perform a bulk insert with minimal logging.
19. Using Compression to Reduce Storage and Improve I/O
Write a SQL query to enable data compression for a table.
20. Analyzing Wait Statistics for Bottleneck Identification
Write a SQL query to analyze wait statistics for identifying performance bottlenecks.
More to Come !
Do not submit any solution of the above exercises at here, if you want to contribute go to the appropriate exercise page.
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