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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.
|
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.
INSERT OVERWRITE [ LOCAL ] DIRECTORY [ directory_path ]
USING file_format [ OPTIONS ( key = val [ , ... ] ) ]
{ VALUES ( { value | NULL } [ , ... ] ) [ , ( ... ) ] | query }
-
directory_path
Specifies the destination directory. It can also be specified in
OPTIONS
usingpath
. TheLOCAL
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 oforg.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
- a
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;