[jira] [Updated] (DRILL-7138) Implement command to describe schema for table

["Arina Ielchiieva (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DRILL-7138?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arina Ielchiieva updated DRILL-7138:
------------------------------------
    Summary: Implement command to describe schema for table  (was: Implement command to show schema for table)

> Implement command to describe schema for table
> ----------------------------------------------
>
>                 Key: DRILL-7138
>                 URL: https://issues.apache.org/jira/browse/DRILL-7138
>             Project: Apache Drill
>          Issue Type: Sub-task
>            Reporter: Arina Ielchiieva
>            Assignee: Arina Ielchiieva
>            Priority: Major
>             Fix For: 1.16.0
>
>
> As part of schema provisioning project, it will be handy for the user to see if table has schema and its content. 
> Command syntax:
> *describe schema for table dfs.tmp.`text_table`*
> By default schema will be output in JSON format (format schema is stored in .drill.schema file):
> {noformat}
> {
>   "table" : "dfs.tmp.`text_table`",
>   "schema" : {
>     "columns" : [
>       {
>         "name" : "id",
>         "type" : "INT",
>         "mode" : "OPTIONAL"
>       }
>     ]
>   },
>   "version" : 1
> }
> {noformat}
> JSON format can be indicated explicitly:
> *describe schema for table dfs.tmp.`text_table` as json*
> Other formats:
> STATEMENT - schema will be output in the form of CREATE SCHEMA statement.



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