MySQL是一种开放源代码的关系型数据库管理系统(RDBMS),MySQL数据库系统使用最常用的数据库管理语言--结构化查询语言(SQL)进行数据库管理。
show column from tablename;
对每一个字段返回一行,行中包含字段名,数据类型、是否允许NULL、键信息、默认值以及其他信息。
describe 语句: MySQL支持使用describ作为show columns from 的一种快捷方式。describ tablename
所支持的其他的show语句:
show status,用于显示广泛的服务器状态信息
show create database和show create table ,分别用来显示创建特定数据库或表的Mysql 语句。
show grants,用来显示授予用户的安全权限。
show errors 和show warnings ,用来显示服务器错误或警告消息。
MYSQL 5支持一个新的information_schema 命令,可用它来获得和过滤模式信息。
以上是小编给大家介绍的MYSQL必知必会读书笔记第三章之显示数据库的相关内容,希望对大家有所帮助!

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