What does mysql hash partition mean?

This article mainly introduces the relevant knowledge of what mysql hash partition refers to, the content is detailed and easy to understand, the operation is simple and fast, and has a certain reference value, I believe you will gain something after reading this mysql hash partition refers to what article, let's take a look at it.

1. Hash partitions are mainly used to ensure that data is evenly distributed among a predetermined number of partitions.

2. The closer the expression value changes to the value of the column on which it is based, the more effectively MySQL can use the expression for HASH partitioning.

Example

CREATE TABLE employees (id INT NOT NULL, fname VARCHAR (30), lname VARCHAR (30), hired DATE NOT NULL DEFAULT '1970-01-01, separated DATE NOT NULL DEFAULT' 9999-12-31, job_code INT, store_id INT) PARTITION BY HASH (store_id) PARTITIONS 4; this is the end of the article on "what does mysql hash partition mean?" Thank you for reading! I believe you all have a certain understanding of the knowledge of "what does mysql hash partition mean?" if you want to learn more knowledge, you are welcome to follow the industry information channel.