desc和show

desc只能查看表结构

查看zx1表结构

desc zx1;

mysql> desc zx1
    -> ;
+---------+---------+------+-----+---------+-------+
| Field   | Type    | Null | Key | Default | Extra |
+---------+---------+------+-----+---------+-------+
| zx_name | char(1) | YES  |     | NULL    |       |
| age     | int(11) | YES  |     | NULL    |       |
+---------+---------+------+-----+---------+-------+

show可以用来查看创建语句和查看数据库和表

查看zx1表创建语句

show create table zx1;

mysql> show create table zx1;
+-------+--------------------------------------------------------------------------------------------------------------------------+
| Table | Create Table                                                                                                             |
+-------+--------------------------------------------------------------------------------------------------------------------------+
| zx1   | CREATE TABLE `zx1` (
  `zx_name` char(1) DEFAULT NULL,
  `age` int(11) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 |
+-------+--------------------------------------------------------------------------------------------------------------------------+

查看创建库的语句

show create database db1;

mysql> show create database db1;
+----------+--------------------------------------------------------------+
| Database | Create Database                                              |
+----------+--------------------------------------------------------------+
| db1      | CREATE DATABASE `db1` /*!40100 DEFAULT CHARACTER SET utf8 */ |
+----------+--------------------------------------------------------------+

查看数据库

show databases;

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| db1                |
| db2                |
| db3                |
| db4                |
| fdg                |
| mysql              |
| performance_schema |
| test               |
+--------------------+

查看数据表

show tables;

mysql> show tables;
+---------------+
| Tables_in_db1 |
+---------------+
| zx1           |
+---------------+