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https://issues.apache.org/jira/browse/FLINK-2955?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14996628#comment-14996628
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ASF GitHub Bot commented on FLINK-2955:
---------------------------------------
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/1318#discussion_r44281637
--- Diff: docs/libs/table.md ---
@@ -123,13 +123,205 @@ DataSet<WC> result = tableEnv.toDataSet(filtered,
WC.class);
When using Java, the embedded DSL for specifying expressions cannot be
used. Only String expressions
are supported. They support exactly the same feature set as the expression
DSL.
-## Expression Syntax
+## Table API Operators
+Table API provide a domain-spcific language to execute language-integrated
query on structured data in Scala and Java.
+This section gives a brief overview of all available operators. You can
find more details of operators in the
[Javadoc](http://flink.apache.org/docs/latest/api/java/org/apache/flink/api/table/Table.html).
+
+<div class="codetabs" markdown="1">
+<div data-lang="java" markdown="1">
+
+<br />
+
+<table class="table table-bordered">
+ <thead>
+ <tr>
+ <th class="text-left" style="width: 20%">Operators</th>
+ <th class="text-center">Description</th>
+ </tr>
+ </thead>
+
+ <tbody>
+ <tr>
+ <td><strong>Select</strong></td>
+ <td>
+ <p>Similar to a SQL SELECT statement. Perform a select
operation.</p>
+{% highlight java %}
+Table in = tableEnv.fromDataSet(ds, "a, b, c");
+Table result = in.select("a, b, c as d");
+{% endhighlight %}
+ </td>
+ </tr>
+
+ <tr>
+ <td><strong>As</strong></td>
+ <td>
+ <p>Rename the fields name.</p>
--- End diff --
"Rename the fields name" is redundant. How about "Rename fields"?
> Add operations introduction in Table API page.
> ----------------------------------------------
>
> Key: FLINK-2955
> URL: https://issues.apache.org/jira/browse/FLINK-2955
> Project: Flink
> Issue Type: New Feature
> Components: Documentation
> Reporter: Chengxiang Li
> Assignee: Chengxiang Li
> Priority: Minor
>
> On the Table API page, there is no formal introduction of current supported
> operations, it should be nice to have it.
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