### What changes were proposed in this pull request? Remove the unneeded embedded inline HTML markup by using the basic markdown syntax. Please see #28414 ### Why are the changes needed? Make the doc cleaner and easily editable by MD editors. ### Does this PR introduce _any_ user-facing change? No ### How was this patch tested? Manually build and check Closes #28451 from huaxingao/html_cleanup. Authored-by: Huaxin Gao <huaxing@us.ibm.com> Signed-off-by: Sean Owen <srowen@gmail.com>
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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
INSERT OVERWRITE [ LOCAL ] DIRECTORY [ directory_path ]
USING file_format [ OPTIONS ( key = val [ , ... ] ) ]
{ VALUES ( { value | NULL } [ , ... ] ) [ , ( ... ) ] | query }
Parameters
-
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
Examples
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;