MySQL客户端服务器端帮助

让我们了解MySQL客户端-服务器端的帮助-

mysql> help search_string

如果上面的“ help”命令提供了一个参数，则mysql将使用它作为搜索字符串，以从《 MySQL参考手册》的内容访问服务器端帮助。要正确执行此命令，需要使用帮助主题信息初始化mysql数据库中的帮助表。

如果搜索字符串不匹配，则搜索操作将失败。让我们以一个例子来理解这一点-

mysql> help me

输出结果

Nothing found

Please try to run 'help contents' for a list of all accessible topics

我们可以使用help contents命令来查看帮助类别的列表。让我们以一个例子来理解这一点-

mysql> help contents

输出结果

You asked for help about help category: "Contents"

For more information, type 'help <item>', where <item> is one of the

following categories:

Account Management

Administration

Data Definition

Data Manipulation

Data Types

Functions

Functions and Modifiers for Use with GROUP BY

Geographic Features

Language Structure

Plugins

Storage Engines

Stored Routines

Table Maintenance

Transactions

Triggers

如果搜索字符串匹配多个项目，则mysql将显示匹配主题的列表。让我们以一个例子来理解这一点-

mysql > help logs

输出结果

Many help items for your request exist.

To make a more specific request, please type 'help <item>',

where <item> is one of the following topics:

SHOW

SHOW BINARY LOGS

SHOW ENGINE

SHOW LOGS