01cc852982
### What changes were proposed in this pull request? Change the link to the Scala API document. ``` $ git grep "#org.apache.spark.package" docs/_layouts/global.html: <li><a href="api/scala/index.html#org.apache.spark.package">Scala</a></li> docs/index.md:* [Spark Scala API (Scaladoc)](api/scala/index.html#org.apache.spark.package) docs/rdd-programming-guide.md:[Scala](api/scala/#org.apache.spark.package), [Java](api/java/), [Python](api/python/) and [R](api/R/). ``` ### Why are the changes needed? The home page link for Scala API document is incorrect after upgrade to 3.0 ### Does this PR introduce any user-facing change? Document UI change only. ### How was this patch tested? Local test, attach screenshots below: Before: ![image](https://user-images.githubusercontent.com/4833765/74335713-c2385300-4dd7-11ea-95d8-f5a3639d2578.png) After: ![image](https://user-images.githubusercontent.com/4833765/74335727-cbc1bb00-4dd7-11ea-89d9-4dcc1310e679.png) Closes #27549 from xuanyuanking/scala-doc. Authored-by: Yuanjian Li <xyliyuanjian@gmail.com> Signed-off-by: Sean Owen <srowen@gmail.com>
88 lines
3.8 KiB
Markdown
88 lines
3.8 KiB
Markdown
---
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layout: global
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title: INSERT OVERWRITE DIRECTORY with Hive format
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displayTitle: INSERT OVERWRITE DIRECTORY with Hive format
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license: |
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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---
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### Description
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The `INSERT OVERWRITE DIRECTORY` with Hive format overwrites the existing data in the directory with the new values using Hive `SerDe`.
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Hive support must be enabled to use this command. The inserted rows can be specified by value expressions or result from a query.
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### Syntax
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{% highlight sql %}
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INSERT OVERWRITE [ LOCAL ] DIRECTORY directory_path
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[ ROW FORMAT row_format ] [ STORED AS file_format ]
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{ { VALUES ( { value | NULL } [ , ... ] ) [ , ( ... ) ] } | query }
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{% endhighlight %}
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### Parameters
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<dl>
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<dt><code><em>directory_path</em></code></dt>
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<dd>
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Specifies the destination directory. The <code>LOCAL</code> keyword is used to specify that the directory is on the local file system.
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</dd>
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</dl>
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<dl>
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<dt><code><em>row_format</em></code></dt>
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<dd>
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Specifies the row format for this insert. Valid options are <code>SERDE</code> clause and <code>DELIMITED</code> clause. <code>SERDE</code> clause can be used to specify a custom <code>SerDe</code> for this insert. Alternatively, <code>DELIMITED</code> clause can be used to specify the native <code>SerDe</code> and state the delimiter, escape character, null character, and so on.
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</dd>
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</dl>
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<dl>
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<dt><code><em>file_format</em></code></dt>
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<dd>
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Specifies the file format for this insert. Valid options are <code>TEXTFILE</code>, <code>SEQUENCEFILE</code>, <code>RCFILE</code>, <code>ORC</code>, <code>PARQUET</code>, and <code>AVRO</code>. You can also specify your own input and output format using <code>INPUTFORMAT</code> and <code>OUTPUTFORMAT</code>. <code>ROW FORMAT SERDE</code> can only be used with <code>TEXTFILE</code>, <code>SEQUENCEFILE</code>, or <code>RCFILE</code>, while <code>ROW FORMAT DELIMITED</code> can only be used with <code>TEXTFILE</code>.
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</dd>
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</dl>
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<dl>
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<dt><code><em>VALUES ( { value | NULL } [ , ... ] ) [ , ( ... ) ]</em></code></dt>
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<dd>
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Specifies the values to be inserted. Either an explicitly specified value or a NULL can be inserted. A comma must be used to separate each value in the clause. More than one set of values can be specified to insert multiple rows.
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</dd>
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</dl>
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<dl>
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<dt><code><em>query</em></code></dt>
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<dd>A query that produces the rows to be inserted. It can be in one of following formats:
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<ul>
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<li>a <code>SELECT</code> statement</li>
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<li>a <code>TABLE</code> statement</li>
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<li>a <code>FROM</code> statement</li>
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</ul>
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</dd>
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</dl>
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### Examples
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{% highlight sql %}
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INSERT OVERWRITE LOCAL DIRECTORY '/tmp/destination'
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STORED AS orc
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SELECT * FROM test_table;
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INSERT OVERWRITE LOCAL DIRECTORY '/tmp/destination'
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ROW FORMAT DELIMITED FIELDS TERMINATED BY ','
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SELECT * FROM test_table;
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{% endhighlight %}
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### Related Statements
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* [INSERT INTO statement](sql-ref-syntax-dml-insert-into.html)
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* [INSERT OVERWRITE statement](sql-ref-syntax-dml-insert-overwrite-table.html)
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* [INSERT OVERWRITE DIRECTORY statement](sql-ref-syntax-dml-insert-overwrite-directory.html)
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