MySQL幫助使用的主要兩個(gè)方面

 下文內(nèi)容主要給大家?guī)?/span>MySQL幫助使用的主要兩個(gè)方面，這里所講到的知識(shí)，與書籍略有不同，都是億速云專業(yè)技術(shù)人員在與用戶接觸過程中，總結(jié)出來的，具有一定的經(jīng)驗(yàn)分享價(jià)值，希望給廣大讀者帶來幫助。

1 按層次查找?guī)椭?|help + 類別名稱

mysql> ? contents;                #有哪些分類

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

   Compound Statements

   Data Definition

   Data Manipulation

   Data Types

   Functions

   Functions and Modifiers for Use with GROUP BY

   Geographic Features

   Help Metadata

mysql> ? data types                #查看數(shù)據(jù)有哪些類型

You asked for help about help category: "Data Types"

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

topics:

   AUTO_INCREMENT

   BIGINT

   BINARY

   BIT

   BLOB

   BLOB DATA TYPE

   BOOLEAN

   CHAR

   CHAR BYTE

   DATE

   DATETIME

   DEC

   DECIMAL

mysql> help int;                    #關(guān)于數(shù)據(jù)類型的說明

Name: 'INT'

Description:

INT[(M)] [UNSIGNED] [ZEROFILL]

A normal-size integer. The signed range is -2147483648 to 2147483647.

The unsigned range is 0 to 4294967295.

2 快速查閱幫助

mysql> ? create database;

Name: 'CREATE DATABASE'

Description:

Syntax:

CREATE {DATABASE | SCHEMA} [IF NOT EXISTS] db_name

    [create_specification] ...

create_specification:

    [DEFAULT] CHARACTER SET [=] charset_name

  | [DEFAULT] COLLATE [=] collation_name

CREATE DATABASE creates a database with the given name. To use this

statement, you need the CREATE privilege for the database. CREATE

SCHEMA is a synonym for CREATE DATABASE.

......

mysql> help create table;

Name: 'CREATE TABLE'

Description:

Syntax:

CREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name

    (create_definition,...)

    [table_options]

    [partition_options]

CREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name

    [(create_definition,...)]

    [table_options]

    [partition_options]

    select_statement

CREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name

    { LIKE old_tbl_name | (LIKE old_tbl_name) }

......

對(duì)于以上關(guān)于MySQL幫助使用的主要兩個(gè)方面，如果大家還有更多需要了解的可以持續(xù)關(guān)注我們億速云的行業(yè)推新，如需獲取專業(yè)解答，可在官網(wǎng)聯(lián)系售前售后的，希望該文章可給大家?guī)硪欢ǖ闹R(shí)更新。