SQL Performance Tuning
SQL performance tuning is a process of optimizing SQL queries to ensure they execute as fast as possible. There are many factors that affect the performance of SQL queries, such as the number of tables queried, the size and number of columns in tables, and indexes on tables.
SQL is a critical component of many database systems and is a well-known language for querying, updating and managing data.
SQL performance tuning is an important topic to master as it can help with scalability and speed of queries.
In this post, we will cover different ways SQL tuning.
All of us always wants a fast response on the data retrieval process. So we need to design a good database that provides best performance during data manipulation which results into the best performance of an application.
However, there is no straightforward way to define the best performance but we can choose multiple ways to improving SQL query performance, which falls under various categories like creation of Indexes, usage of joins, and rewrite a subquery to use JOIN, etc.
As a developer, we know any SQL query can be written in multiple ways but we should follow best practices/ techniques to achieve better query performance. Some of them are highlighted below :
- Use EXISTS instead of IN to check…
