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https://issues.apache.org/jira/browse/HIVE-25652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17442073#comment-17442073
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Soumyakanti Das commented on HIVE-25652:
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[~harshit.gupta] ,

Thanks for the suggestions. I have opened a new PR based on your comment.

> Add constraints in result of “SHOW CREATE TABLE ”
> -------------------------------------------------
>
>                 Key: HIVE-25652
>                 URL: https://issues.apache.org/jira/browse/HIVE-25652
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Soumyakanti Das
>            Assignee: Soumyakanti Das
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 2.5h
>  Remaining Estimate: 0h
>
> Currently show create table doesn’t pull any constraint info like not null, 
> defaults, primary key.
> Example:
> Create table
>  
> {code:java}
> CREATE TABLE TEST(
>   col1 varchar(100) NOT NULL COMMENT "comment for column 1",
>   col2 timestamp DEFAULT CURRENT_TIMESTAMP() COMMENT "comment for column 2",
>   col3 decimal,
>   col4 varchar(512) NOT NULL,
>   col5 varchar(100),
>   primary key(col1, col2) disable novalidate)
> ROW FORMAT SERDE
>   'org.apache.hadoop.hive.ql.io.orc.OrcSerde'
> STORED AS INPUTFORMAT
>   'org.apache.hadoop.hive.ql.io.orc.OrcInputFormat'
> OUTPUTFORMAT
>   'org.apache.hadoop.hive.ql.io.orc.OrcOutputFormat';
> {code}
> Currently {{SHOW CREATE TABLE TEST}} doesn't show the column constraints.
> {code:java}
> CREATE TABLE `test`(
>   `col1` varchar(100) COMMENT 'comment for column 1', 
>   `col2` timestamp COMMENT 'comment for column 2', 
>   `col3` decimal(10,0), 
>   `col4` varchar(512), 
>   `col5` varchar(100))
> ROW FORMAT SERDE 
>   'org.apache.hadoop.hive.ql.io.orc.OrcSerde' 
> STORED AS INPUTFORMAT 
>   'org.apache.hadoop.hive.ql.io.orc.OrcInputFormat' 
> OUTPUTFORMAT 
>   'org.apache.hadoop.hive.ql.io.orc.OrcOutputFormat'
> {code}



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