MySQL is a commonly used relational database management system that provides a variety of data types to store different types of data. When using MySQL for database design and development, it is very important to understand common data types and their application scenarios. This article will introduce the commonly used data types in MySQL and provide some specific code examples to help readers better understand and use these data types.
1. Integer data type
Sample code:
CREATE TABLE users (
id TINYINT, is_active TINYINT
);
Sample code:
CREATE TABLE users (
id INT, age INT
);
Sample code:
CREATE TABLE orders (
order_number BIGINT, quantity BIGINT
);
2. Floating point data type
Sample code:
CREATE TABLE products (
id INT, price FLOAT
);
Sample code:
CREATE TABLE products (
id INT, price DOUBLE
);
3. String data type
Sample code:
CREATE TABLE users (
id INT, gender CHAR(1)
);
Sample code:
CREATE TABLE users (
id INT, username VARCHAR(20)
);
4. Date and time data types
Sample code:
CREATE TABLE users (
id INT, birthday DATE
);
Sample code:
CREATE TABLE orders (
id INT, order_time DATETIME
);
The above introduces the commonly used data types and application scenarios of MySQL. And provides some specific code examples. In actual development, choosing the appropriate storage method according to different data types can improve database performance and data accuracy. I hope this article can be helpful to readers when using MySQL for database design and development.
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