Commands to find table structure in mysql

Use the desc command to find the MySQL table structure, which displays column names, data types, constraints and other information. Syntax: desc table name; Example: desc users will display the following results: 1. id: integer, primary key, auto-increment; 2. username: string, length 255, unique index; 3. password: string, length 255 255; 4. email: string, length 255.

Commands to look up table structures in MySQL

desc command

Use the desc command to obtain detailed structural information of the table, including column names, data types, constraints, etc.

Syntax:

<code>desc 表名;</code>

Example:

<code>mysql> desc users;
+---------+-------------+------+-----+---------+-------+
| Field    | Type         | Null | Key | Default | Extra |
+---------+-------------+------+-----+---------+-------+
| id       | int(11)      | NO   | PRI | NULL    | auto_increment |
| username | varchar(255) | YES  | UNI | NULL    |       |
| password | varchar(255) | YES  |     | NULL    |       |
| email    | varchar(255) | YES  |     | NULL    |       |
+---------+-------------+------+-----+---------+-------+</code>

Result:

• id Column: integer, primary key, auto-increment
• username Column: variable-length string, length 255, unique index
• password Column: variable-length string, length is 255
• email Column: variable-length string, length is 255

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