search
HomeDatabaseMysql Tutorialmysql查看表的存储引擎、表结构等相关信息_MySQL

bitsCN.com

以下均为查看mytable表的信息

1.查看表的存储引擎、记录数等

mysql> show table status like 'mytable' /G;*************************** 1. row ***************************           Name: mytable  #表名         Engine: InnoDB  #存储引擎伟InnoDB        Version: 10   #mysql版本     Row_format: Compact   #行格式。有Dynamic,fixed,Compact等格式。Dynamic是动态行,表字段里面宝航varchar,BloB等不定长字段。fixed是定长行。Compact是行压缩。           Rows: 0  #表中的行数 Avg_row_length: 0  #平均每行的字节数    Data_length: 16384   #整个表的数据量(字节)Max_data_length: 0  #表最大的容量。0表示无限   Index_length: 0    #索引数据占用磁盘空间的大小      Data_free: 10485760  #表示已分配但还未被使用的空间大小。 Auto_increment: NULL  #下一个AUto_increment的值    Create_time: 2011-08-06 22:39:46  #创建时间    Update_time: NULL  #更新时间     Check_time: NULL  #使用check table等命令时的检查时间      Collation: utf8_general_ci  #默认字符集和字符列排列顺序       Checksum: NULL  #如果启动,则表示整个表的校验和 Create_options: max_rows=4294967295 avg_row_length=32  #表创建时的选项        Comment: 1 row in set (0.00 sec)

2.查看表结构信息

mysql> desc mytable;+---------+-------------+------+-----+---------+-------+| Field   | Type        | Null | Key | Default | Extra |+---------+-------------+------+-----+---------+-------+| keyword | varchar(64) | NO   | PRI | NULL    |       || queries | int(10)     | YES  |     | NULL    |       |+---------+-------------+------+-----+---------+-------+
mysql> show create table mytable;       CREATE TABLE `mytable` (`id` int(11) NOT NULL AUTO_INCREMENT,`title` text NOT NULL,`content` text NOT NULL,`ordering` int(11) NOT NULL DEFAULT '0',`position` varchar(50) DEFAULT NULL,`checked_out` int(11) unsigned NOT NULL DEFAULT '0',`checked_out_time` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',`published` tinyint(1) NOT NULL DEFAULT '0',`module` varchar(50) DEFAULT NULL,`numnews` int(11) NOT NULL DEFAULT '0',`access` tinyint(3) unsigned NOT NULL DEFAULT '0',`showtitle` tinyint(3) unsigned NOT NULL DEFAULT '1',`params` text NOT NULL,`iscore` tinyint(4) NOT NULL DEFAULT '0',`client_id` tinyint(4) NOT NULL DEFAULT '0',`control` text NOT NULL,PRIMARY KEY (`id`),KEY `published` (`published`,`access`),KEY `newsfeeds` (`module`,`published`)) ENGINE=MyISAM AUTO_INCREMENT=145 DEFAULT CHARSET=utf8
use information_schema;select * from columns where table_name='mytable';

 

 

 

bitsCN.com
Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
图文详解mysql架构原理图文详解mysql架构原理May 17, 2022 pm 05:54 PM

本篇文章给大家带来了关于mysql的相关知识,其中主要介绍了关于架构原理的相关内容,MySQL Server架构自顶向下大致可以分网络连接层、服务层、存储引擎层和系统文件层,下面一起来看一下,希望对大家有帮助。

mysql怎么替换换行符mysql怎么替换换行符Apr 18, 2022 pm 03:14 PM

在mysql中,可以利用char()和REPLACE()函数来替换换行符;REPLACE()函数可以用新字符串替换列中的换行符,而换行符可使用“char(13)”来表示,语法为“replace(字段名,char(13),'新字符串') ”。

mysql的msi与zip版本有什么区别mysql的msi与zip版本有什么区别May 16, 2022 pm 04:33 PM

mysql的msi与zip版本的区别:1、zip包含的安装程序是一种主动安装,而msi包含的是被installer所用的安装文件以提交请求的方式安装;2、zip是一种数据压缩和文档存储的文件格式,msi是微软格式的安装包。

mysql怎么去掉第一个字符mysql怎么去掉第一个字符May 19, 2022 am 10:21 AM

方法:1、利用right函数,语法为“update 表名 set 指定字段 = right(指定字段, length(指定字段)-1)...”;2、利用substring函数,语法为“select substring(指定字段,2)..”。

mysql怎么将varchar转换为int类型mysql怎么将varchar转换为int类型May 12, 2022 pm 04:51 PM

转换方法:1、利用cast函数,语法“select * from 表名 order by cast(字段名 as SIGNED)”;2、利用“select * from 表名 order by CONVERT(字段名,SIGNED)”语句。

MySQL复制技术之异步复制和半同步复制MySQL复制技术之异步复制和半同步复制Apr 25, 2022 pm 07:21 PM

本篇文章给大家带来了关于mysql的相关知识,其中主要介绍了关于MySQL复制技术的相关问题,包括了异步复制、半同步复制等等内容,下面一起来看一下,希望对大家有帮助。

带你把MySQL索引吃透了带你把MySQL索引吃透了Apr 22, 2022 am 11:48 AM

本篇文章给大家带来了关于mysql的相关知识,其中主要介绍了mysql高级篇的一些问题,包括了索引是什么、索引底层实现等等问题,下面一起来看一下,希望对大家有帮助。

mysql怎么判断是否是数字类型mysql怎么判断是否是数字类型May 16, 2022 am 10:09 AM

在mysql中,可以利用REGEXP运算符判断数据是否是数字类型,语法为“String REGEXP '[^0-9.]'”;该运算符是正则表达式的缩写,若数据字符中含有数字时,返回的结果是true,反之返回的结果是false。

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
4 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
4 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

PhpStorm Mac version

PhpStorm Mac version

The latest (2018.2.1) professional PHP integrated development tool

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools

SecLists

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

DVWA

DVWA

Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

MinGW - Minimalist GNU for Windows

MinGW - Minimalist GNU for Windows

This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.