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https://issues.apache.org/jira/browse/SPARK-31383?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean R. Owen resolved SPARK-31383.
----------------------------------
Fix Version/s: 3.0.0
Resolution: Fixed
Issue resolved by pull request 28151
[https://github.com/apache/spark/pull/28151]
> Clean up the SQL documents in docs/sql-ref*
> -------------------------------------------
>
> Key: SPARK-31383
> URL: https://issues.apache.org/jira/browse/SPARK-31383
> Project: Spark
> Issue Type: Sub-task
> Components: Documentation, SQL
> Affects Versions: 3.0.0
> Reporter: Takeshi Yamamuro
> Assignee: Takeshi Yamamuro
> Priority: Minor
> Fix For: 3.0.0
>
>
> This ticket intends to clean up the SQL documents in `doc/sql-ref*`.
> Main changes are as follows;
> - Fixes wrong syntaxes and capitalize sub-titles
> - Adds some DDL queries in `Examples` so that users can run examples there
> - Makes query output in `Examples` follows the `Dataset.showString`
> (right-aligned) format
> - Adds/Removes spaces, Indents, or blank lines to follow the format below;
> {code}
> ---
> license...
> ---
> ### Description
> Writes what's the syntax is.
> ### Syntax
> {% highlight sql %}
> SELECT...
> WHERE... // 4 indents after the second line
> ...
> {% endhighlight %}
> ### Parameters
> <dl>
> <!-- 2 indents in this section -->
> <dt><code><em>Param Name</em></code></dt>
> <dd>
> Param Description
> </dd>
> ...
> </dl>
> ### Examples
> {% highlight sql %}
> -- It is better that users are able to execute example queries here.
> -- So, we prepare test data in the first section if possible.
> CREATE TABLE t (key STRING, value DOUBLE);
> INSERT INTO t VALUES
> ('a', 1.0), ('a', 2.0), ('b', 3.0), ('c', 4.0);
> -- query output has 2 indents and it follows the `Dataset.showString`
> -- format (right-aligned).
> SELECT * FROM t;
> +---+-----+
> |key|value|
> +---+-----+
> | a| 1.0|
> | a| 2.0|
> | b| 3.0|
> | c| 4.0|
> +---+-----+
> -- Query statements after the second line have 4 indents.
> SELECT key, SUM(value)
> FROM t
> GROUP BY key;
> +---+----------+
> |key|sum(value)|
> +---+----------+
> | c| 4.0|
> | b| 3.0|
> | a| 3.0|
> +---+----------+
> ...
> {% endhighlight %}
> ### Related Statements
> * [XXX](xxx.html)
> * ...
> {code}
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