10. What sorts of comparison operators exist in MySQL? Comparison operators are the bread and butter of many SQL queries. They help users create complex queries that evaluate rows of data against complex specified criteria. You probably know a fair number of comparison operators already from your...
49. How can you optimize MySQL queries for faster data retrieval? To optimize MySQL queries for faster data retrieval, indexing on columns can be used in WHERE clauses; avoid SELECT *; and refine queries with EXPLAIN to analyze performance. Implementing query caching can also significantly reduce...
For tens of millions of document objects and nearly 10 GB of data, the query on the indexed ID will not be slower than MySQL, while the query on the non-indexed fields will win in an all-around way. MySQL is not capable of queries on any field under a large number of data, while ...
MySQL can execute many queries due to high transaction processing. Besides, a number of the features that make MySQL unique are deadlock identification, execution of multiple transactions, efficient processing, and straightforward management. Disadvantages: Scalability in MySQL may be a redundant task. ...
MySQL is complex which makes it difficult to maintain and manage. While performing certain types of operations and queries, it can be less efficient as compared to other databases. Lack of support for some specific data types, such as semi-structured or unstructured data. ...
This tokenization process ensures accurate parsing and evaluation of SQL queries, enabling the server to handle database operations efficiently. PostgreSQL Advanced Interview Questions 26. When should a developer use PostgreSQL? Developers should choose PostgreSQL when they require a dependable and feature-...
This is the widely used join for queries. SELECT * FROM Table_A JOIN Table_B; SELECT * FROM Table_A INNER JOIN Table_B; LEFT (OUTER) JOIN: Retrieves all the records/rows from the left and the matched records/rows from the right table. SELECT * FROM Table_A A LEFT JOIN Table_B ...
The recently introduced Application Load Balancer (ALB) service, built on Alibaba Cloud Apsara Network 2.0, supports ahigh throughput of up to 1,000,000 queries per second (QPS). SLB instances are designed for high performance and support auto-scaling.They can dynamically adjust resources based ...
Storage engine: How to store data, indexes and other objects in MySQL is the realization of a file system. The commonly used storage engines are as follows: Innodb engine: Innodb engine provides support for database ACID transactions. It also provides row-level locks and foreign key constraints...
computer network and other frequently asked technology stack interview questions. This article mainly organizes and shares Spring-related interview questions. MySQL has been updated before, and students who need it can also Check it out, I hope it will help those of you who are preparing for the...