云数据库 GAUSSDB-获取帮助:任务示例

时间:2024-11-02 18:48:11

任务示例

  1. 查看gsql的帮助信息。具体执行命令请参见表1

    表1 使用gsql联机帮助

    描述

    示例

    查看版权信息

    \copyright

    查看 GaussDB 支持的SQL语句的帮助

    查看GaussDB支持的SQL语句的帮助

    例如,查看GaussDB支持的所有SQL语句:

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    openGauss=# \h
    Available help:
      ABORT                            
      ALTER AGGREGATE
      ALTER APP WORKLOAD GROUP                  
    ... ...
    

    例如,查看CREATE DATABASE命令的参数可使用下面的命令:

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    openGauss=# \help CREATE DATABASE
    Command:     CREATE DATABASE
    Description: create a new database
    Syntax:
    CREATE DATABASE database_name
         [ [ WITH ] {[ OWNER [=] user_name ]|
               [ TEMPLATE [=] template ]|
               [ ENCODING [=] encoding ]|
               [ LC_COLLATE [=] lc_collate ]|
               [ LC_CTYPE [=] lc_ctype ]|
               [ DBCOMPATIBILITY [=] compatibility_type ]|
               [ TABLESPACE [=] tablespace_name ]|
               [ CONNECTION LIMIT [=] connlimit ]}[...] ];
    

    查看gsql命令的帮助

    例如,查看gsql支持的命令:

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    openGauss=# \?
    General
      \copyright             show openGauss usage and distribution terms
      \g [FILE] or ;         execute query (and send results to file or |pipe)
      \h(\help) [NAME]              help on syntax of SQL commands, * for all commands
      \q                     quit gsql
    ... ...
    

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