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Change-Id: Ia376721f46eb507901f9f64b5c3341dc0f36475b Reviewed-on: http://gerrit.cloudera.org:8080/13885 Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com> Reviewed-by: Bharath Vissapragada <bharathv@cloudera.com>
82 lines
2.2 KiB
XML
82 lines
2.2 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!--
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Licensed to the Apache Software Foundation (ASF) under one
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or more contributor license agreements. See the NOTICE file
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distributed with this work for additional information
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regarding copyright ownership. The ASF licenses this file
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to you under the Apache License, Version 2.0 (the
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"License"); you may not use this file except in compliance
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with 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,
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software distributed under the License is distributed on an
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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KIND, either express or implied. See the License for the
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specific language governing permissions and limitations
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under the License.
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-->
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<!DOCTYPE concept PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
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<concept id="default_hints_insert_statement">
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<title>DEFAULT_HINTS_INSERT_STATEMENT Query Option</title>
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<titlealts audience="PDF">
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<navtitle>DEFAULT_HINTS_INSERT_STATEMENT</navtitle>
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</titlealts>
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<prolog>
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<metadata>
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<data name="Category" value="Impala"/>
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<data name="Category" value="Impala Query Options"/>
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</metadata>
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</prolog>
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<conbody>
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<p>
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The <codeph>DEFAULT_HINTS_INSERT_STATEMENT</codeph> query option sets the default hints
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for the <codeph>INSERT</codeph> statements with no optimizer hint specified.
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</p>
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<p>
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When there are hints specified in an <codeph>INSERT</codeph> statement, these default
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hints are ignored.
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</p>
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<p>
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You can specify multiple hints separated by '<codeph>:</codeph>'.
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</p>
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<p>
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For example:
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</p>
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<codeblock>SET DEFAULT_HINTS_INSERT_STATEMENT=CLUSTERED;
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SET DEFAULT_HINTS_INSERT_STATEMENT=SHUFFLE;
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SET DEFAULT_HINTS_INSERT_STATEMENT=NOCLUSTERED:NOSHUFFLE; </codeblock>
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<p>
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The default hints apply to the HDFS and Kudu table formats and are ignored for the HBase
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table format.
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</p>
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<p>
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<b>Type:</b> <codeph>STRING</codeph>
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</p>
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<p>
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<b>Default:</b> none
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</p>
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<p>
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<b>Added in:</b> <keyword keyref="impala33"/>
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</p>
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</conbody>
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</concept>
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