MySQL 客戶端伺服器端說明

讓我們了解MySQL 客戶端-伺服器端幫助-

mysql> help search_string

如果為上述「help」命令提供了參數，mysql將使用它作為搜索字串來存取MySQL參考手冊內容中的伺服器端說明。此指令的正確操作需要使用幫助主題資訊初始化mysql資料庫中的幫助表。

如果搜尋字串沒有匹配，則搜尋操作失敗。讓我們舉個例子來理解這一點 -

mysql> help me

輸出

Nothing found
Please try to run 'help contents' for a list of all accessible topics

我們可以使用幫助內容指令來查看幫助類別的清單。讓我們舉個例子來理解這一點 -

mysql> help contents

輸出

You asked for help about help category: "Contents"
For more information, type &#39;help <item>&#39;, 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

如果搜尋字串匹配多個項目，那麼 mysql 將顯示匹配主題的清單。讓我們舉個例子來理解這一點 -

mysql > help logs

輸出

Many help items for your request exist.
To make a more specific request, please type &#39;help <item>&#39;,
where <item> is one of the following topics:
   SHOW
   SHOW BINARY LOGS
   SHOW ENGINE
   SHOW LOGS

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