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MySQL's DESC command displays structural information about a table or view, including column names, data types, keys, default values, and nullability.
DESC in MySQL
DESC is a command in MySQL that is used to display tables or views in the database structural information.
Function
The DESC command provides detailed information about the table structure, including:
Usage
The basic syntax of the DESC command is:
<code>DESC [数据库名.]表名;</code>
For example, to view the structure of a table named "my_table", use:
<code>DESC my_table;</code>
Output
The output of the DESC command is a table containing the following column information:
Column Name | Data Type | Key | Default value | can be empty |
---|---|---|---|---|
int | PRI | NULL | No | |
varchar(255) | UNI | NULL | is | |
int | 0 | Yes |
Note
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