Home Database Mysql Tutorial How to write the complete process of creating a table in MySQL

How to write the complete process of creating a table in MySQL

Apr 22, 2024 pm 08:06 PM
mysql

The steps to create a MySQL table are as follows: Open the MySQL command line client and select the database. Write a CREATE TABLE statement and specify the table name, column name, data type, primary key and other information. Execute the CREATE TABLE statement to create the table. Use the SHOW TABLES statement to verify that the table has been created.

How to write the complete process of creating a table in MySQL

How to create a MySQL table

Creating a MySQL table involves the following steps:

1. Open the MySQL command line client

Type mysql -u username -p password in the command line.

2. Select the database

Use the USE database name command to select the database where you want to create the table.

3. Write the CREATE TABLE statement

CREATE TABLE statement is used to create a table. The syntax is as follows:

<code>CREATE TABLE 表名 (
  列名1 数据类型 NOT NULL,
  列名2 数据类型 NOT NULL,
  列名3 数据类型 NOT NULL,
  ...
  列名N 数据类型 NOT NULL,
  PRIMARY KEY (主键列)
);</code>
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  • Table name: The name of the table you want to create.
  • Column name: The name of each column of the table.
  • Data type: The data type of each column (for example: INT, VARCHAR, DATE).
  • NOT NULL: Specifies that the column cannot be NULL.
  • PRIMARY KEY: Specifies the primary key of the table, which is used to uniquely identify each record in the table.

4. Execute the statement

Use ; to end the CREATE TABLE statement, and then press Enter to execute it.

Example:

To create a table named customers, which contains id, name and email columns, you can write the following statement:

<code>CREATE TABLE customers (
  id INT NOT NULL AUTO_INCREMENT,
  name VARCHAR(255) NOT NULL,
  email VARCHAR(255) NOT NULL,
  PRIMARY KEY (id)
);</code>
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5. To verify whether the table has been created

you can use SHOW TABLES Statement to verify that the table has been created:

<code>SHOW TABLES;</code>
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It will display a list of all tables in the database, including the table you just created.

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