Stop Slow Queries! Master SQL Optimization in 10 Easy Steps

please make a proper video on this topic.

Make video about how to improve performance and its types.

Good info

Good tips !!

Great!

Hi Manish ,quick question about sql server ?can sql server can track other server ?I mean this people can change fail to pass if u explain me that will great.

Hi this plsql book not available now in Amazon...can you give any other link to bye this book

Will you suggest any best Sql query optimization videos form basic to advance thanks.

Hi could you try to show us through explain plan the difference the query cost any one scenario by implementing above any one.

Hey everyone, it's Your Friend Manish here! 👋 As someone who has spent years diving deep into the world of databases, I've honed my skills and achieved some incredible milestones in SQL optimization. Today, I want to share my top 10 techniques that can significantly enhance your query performance. Ready to level up your SQL game? Let's dive in! 🚀

1️⃣ Use Column Names Instead of * in a SELECT Statement: This reduces unnecessary data retrieval and speeds up your queries.

2️⃣ Avoid including a HAVING clause in SELECT statements: Unless absolutely necessary, it’s more efficient to use WHERE clauses.

3️⃣ Eliminate Unnecessary DISTINCT Conditions: Simplify your queries and avoid redundant operations.

4️⃣ Un-nest sub queries: Flattening sub queries can often lead to more efficient execution plans.

5️⃣ Consider using an IN predicate when querying an indexed column: This can leverage indexes better than multiple OR conditions.

6️⃣ Use EXISTS instead of DISTINCT when using table joins that involves tables having one-to-many relationships: EXISTS can be more performant and easier for the database engine to optimize.

7️⃣ Try to use UNION ALL in place of UNION: UNION ALL is faster because it doesn't remove duplicate rows.

8️⃣ Avoid using OR in join conditions: Instead, use UNION or separate queries to handle different conditions.

9️⃣ Avoid functions on the right-hand side of the operator: Functions can prevent the use of indexes and slow down query performance.

🔟 Remove any redundant mathematics: Simplify your calculations within your queries to avoid unnecessary processing.

Did you know? According to a study by IBM, optimizing SQL queries can improve database performance by up to 50% 🚀. Leveraging these techniques not only boosts efficiency but also ensures your applications run smoothly.

Which of these tips are you excited to try out? Drop a COMMENT below and let me know! 👇