WeiZhong94 commented on a change in pull request #8401: [FLINK-12407][python]
Add all table operators align Java Table API.
URL: https://github.com/apache/flink/pull/8401#discussion_r284967458
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File path: docs/dev/table/tableApi.zh.md
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@@ -510,6 +510,73 @@ val result = orders.renameColumns('b as 'b2, 'c as 'c2)
</tr>
</tbody>
</table>
+</div>
+<div data-lang="python" markdown="1">
+
+<table class="table table-bordered">
+ <thead>
+ <tr>
+ <th class="text-left" style="width: 20%">操作</th>
+ <th class="text-center">描述</th>
+ </tr>
+ </thead>
+ <tbody>
+ <tr>
+ <td>
+ <strong>AddColumns</strong><br>
+ <span class="label label-primary">批处理</span> <span class="label
label-primary">流处理</span>
+ </td>
+ <td>
+ <p>执行新增字段操作。如果欲添加字段已经存在，将会抛出异常。</p>
+{% highlight python %}
+orders = table_env.scan("Orders")
+result = orders.add_columns("concat(c, 'sunny')")
+{% endhighlight %}
+</td>
+ </tr>
+
+ <tr>
+ <td>
+ <strong>AddOrReplaceColumns</strong><br>
+ <span class="label label-primary">批处理</span> <span
class="label label-primary">流处理</span>
+ </td>
+ <td>
+
<p>执行新增字段操作。如果欲添加字段已经存在，将会替换该字段。如果新增字段列表中有同名字段，取最靠后的为有效字段。</p>
+{% highlight python %}
+orders = table_env.scan("Orders")
+result = orders.add_or_replace_columns("concat(c, 'sunny') as desc")
+{% endhighlight %}
+ </td>
+ </tr>
+ <tr>
+ <td>
+ <strong>DropColumns</strong><br>
+ <span class="label label-primary">批处理</span> <span
class="label label-primary">流处理</span>
+ </td>
+ <td>
+ <p>执行删除字段操作。参数必须是字段列表，并且必须是已经存在的字段才能被删除。</p>
+{% highlight python %}
+orders = table_env.scan("Orders")
+result = orders.drop_columns("b, c")
+{% endhighlight %}
+ </td>
+ </tr>
+ <tr>
+ <td>
+ <strong>RenameColumns</strong><br>
+ <span class="label label-primary">批处理</span> <span
class="label label-primary">流处理</span>
+ </td>
+ <td>
+ <p>执行重命名字段操作。参数必须是字段别名(例：xxx as
xxx)列表，并且必须是已经存在的字段才能被重命名。</p>
+{% highlight python %}
Review comment:
Done.
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