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https://issues.apache.org/jira/browse/SPARK-30468?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean R. Owen resolved SPARK-30468.
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Fix Version/s: 3.0.0
Resolution: Fixed
Issue resolved by pull request 27147
[https://github.com/apache/spark/pull/27147]
> Use multiple lines to display data columns for show create table command
> ------------------------------------------------------------------------
>
> Key: SPARK-30468
> URL: https://issues.apache.org/jira/browse/SPARK-30468
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Zhenhua Wang
> Assignee: Zhenhua Wang
> Priority: Minor
> Fix For: 3.0.0
>
>
> Currently data columns are displayed in one line for show create table
> command, when the table has many columns (to make things even worse, columns
> may have long names or comments), the displayed result is really hard to read.
> To improve readability, we could print each column in a separate line. Note
> that other systems like Hive/MySQL also display in this way.
> Also, for data columns, table properties and options, we'd better put the
> right parenthesis to the end of the last column/property/option, instead of
> occupying a separate line.
> As a result, before the change:
> {noformat}
> spark-sql> show create table test_table;
> CREATE TABLE `test_table` (`col1` INT COMMENT 'This is comment for column 1',
> `col2` STRING COMMENT 'This is comment for column 2', `col3` DOUBLE COMMENT
> 'This is comment for column 3')
> USING parquet
> OPTIONS (
> `bar` '2',
> `foo` '1'
> )
> TBLPROPERTIES (
> 'a' = 'x',
> 'b' = 'y'
> )
> {noformat}
> after the change:
> {noformat}
> spark-sql> show create table test_table;
> CREATE TABLE `test_table` (
> `col1` INT COMMENT 'This is comment for column 1',
> `col2` STRING COMMENT 'This is comment for column 2',
> `col3` DOUBLE COMMENT 'This is comment for column 3')
> USING parquet
> OPTIONS (
> `bar` '2',
> `foo` '1')
> TBLPROPERTIES (
> 'a' = 'x',
> 'b' = 'y')
> {noformat}
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