spark-instrumented-optimizer/docs/sql-ref-syntax-dml-insert-overwrite-directory.md

layout	title	displayTitle	license
global	INSERT OVERWRITE DIRECTORY	INSERT OVERWRITE DIRECTORY	Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Description

The INSERT OVERWRITE DIRECTORY statement overwrites the existing data in the directory with the new values using a given Spark file format. The inserted rows can be specified by value expressions or result from a query.

Syntax

{% highlight sql %} INSERT OVERWRITE [ LOCAL ] DIRECTORY [ directory_path ] USING file_format [ OPTIONS ( key = val [ , ... ] ) ] { { VALUES ( { value | NULL } [ , ... ] ) [ , ( ... ) ] } | query } {% endhighlight %}

Parameters

directory_path

Specifies the destination directory. It can also be specified in OPTIONS using path. The LOCAL keyword is used to specify that the directory is on the local file system.

file_format

Specifies the file format to use for the insert. Valid options are TEXT, CSV, JSON, JDBC, PARQUET, ORC, HIVE, LIBSVM, or a fully qualified class name of a custom implementation of org.apache.spark.sql.execution.datasources.FileFormat.

OPTIONS ( key = val [ , ... ] )

Specifies one or more options for the writing of the file format.

VALUES ( { value | NULL } [ , ... ] ) [ , ( ... ) ]

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.

query

A query that produces the rows to be inserted. It can be in one of following formats:

• a SELECT statement
• a TABLE statement
• a FROM statement

Examples

{% highlight sql %} INSERT OVERWRITE DIRECTORY '/tmp/destination' USING parquet OPTIONS (col1 1, col2 2, col3 'test') SELECT * FROM test_table;

INSERT OVERWRITE DIRECTORY USING parquet OPTIONS ('path' '/tmp/destination', col1 1, col2 2, col3 'test') SELECT * FROM test_table; {% endhighlight %}

Related Statements

• INSERT INTO statement
• INSERT OVERWRITE statement
• INSERT OVERWRITE DIRECTORY with Hive format statement