How to create a database in mysql

To build a MySQL database, you need to connect to the server, create a database, select a database, create a table, insert data, and query data. Specific steps include: connect to the server and use the CREATE DATABASE statement to create a database; use the USE statement to select a database; use the CREATE TABLE statement to create a table; use the INSERT statement to insert data; use the SELECT statement to query data.

How to create a MySQL database

To create a MySQL database, you need to use the following steps:

1. Connect to the MySQL server

Use a MySQL client tool (such as MySQL Workbench or command line) to connect to the MySQL server. Log in using your username and password.

2. Create a database

Use the CREATE DATABASE statement to create a database. Database names must start with a letter and can contain up to 64 letters, numbers, underscores, or dollar signs.

CREATE DATABASE [数据库名称];

3. Select the database

Use the USE statement to select the newly created database. This sets it as the current working database and allows you to perform operations on it.

USE [数据库名称];

4. Create a table

Use the CREATE TABLE statement to create a table in the database. A table is a structured container for storing data, containing multiple columns, each column storing a specific type of data.

CREATE TABLE [表名称] (
  [列名称1] [数据类型1],
  [列名称2] [数据类型2],
  ...
  [列名称N] [数据类型N]
);

5. Insert data

Use the INSERT statement to insert data into the table. The data value must match the column's data type.

INSERT INTO [表名称] (
  [列名称1],
  [列名称2],
  ...
  [列名称N]
) VALUES (
  [值1],
  [值2],
  ...
  [值N]
);

6. Query data

Use the SELECT statement to query the data in the database. You can filter, sort, and limit the set of results returned.

SELECT * FROM [表名称]
WHERE [条件];

By following these steps, you can successfully set up a database in MySQL and perform basic operations.

The above is the detailed content of How to create a database in mysql. For more information, please follow other related articles on the PHP Chinese website!