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Posted to commits@cassandra.apache.org by "Brandon Williams (Jira)" <ji...@apache.org> on 2021/07/01 16:29:00 UTC

[jira] [Updated] (CASSANDRA-12349) Adding some new features to cqlsh

     [ https://issues.apache.org/jira/browse/CASSANDRA-12349?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Brandon Williams updated CASSANDRA-12349:
-----------------------------------------
    Status: Open  (was: Patch Available)

> Adding some new features to cqlsh
> ---------------------------------
>
>                 Key: CASSANDRA-12349
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12349
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Legacy/Tools
>         Environment: All
>            Reporter: vin01
>            Priority: Low
>              Labels: cqlsh
>
> I will like to have following features in in cqlsh, I have made a patch to enable them as well.
> 1. Aliases.
> 2. Safe mode (prompt on delete,update,truncate,drop if safe_mode is true).
> 3. Press q to exit.
> Its also shared here -> https://github.com/vineet01/cassandra/blob/trunk/new_features.txt
> Example for aliases :-
> cassandra@cqlsh> show 
>          ;        <enter>  ALIASES  HOST     SESSION  VERSION  
> cassandra@cqlsh> show ALIASES ;
> Aliases :> {'dk': 'desc keyspaces;', 'sl': 'select * from'}
> now if you type dk and press <tab> it will auto complete it to "desc keyspace".
> Adding an alias from shell :-
> cassandra@cqlsh> alias slu=select * from login.user ;
> Alias added successfully - sle:select * login.user ;
> cassandra@cqlsh> show ALIASES ;
> Aliases :> {'slu': 'select * from login.user ;', 'dk': 'desc keyspaces;', 'sl': 'select * from'}
> cassandra@cqlsh> sle
> Expanded alias to> select * from login.user ;
>  username                 | blacklisted | lastlogin | password   
> Adding an alias directly in file :-
> aliases will be kept in same cqlshrc file.
> [aliases]
> dk = desc keyspaces;
> sl = select * from
> sle = select * from login.user ;
> now if we type just "sle" it will autocomplete rest of it and show next options.
> Example of safe mode :-
> cassandra@cqlsh> truncate login.user ;
> Are you sure you want to do this? (y/n) > n
> Not performing any action.
> cassandra@cqlsh> updatee login.user set password=null;
> Are you sure you want to do this? (y/n) > 
> Not performing any action.
> Initial commit :- https://github.com/vineet01/cassandra/commit/0bfce2ccfc610021a74a1f82ed24aa63e1b72fec
> Current version :- https://github.com/vineet01/cassandra/blob/trunk/bin/cqlsh.py
> Please review and suggest any improvements.



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