docs/topics/impala_default_hints_insert_statement.xml

<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE concept PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
<concept id="default_hints_insert_statement">

  <title>DEFAULT_HINTS_INSERT_STATEMENT Query Option</title>

  <titlealts audience="PDF">

    <navtitle>DEFAULT_HINTS_INSERT_STATEMENT</navtitle>

  </titlealts>

  <prolog>
    <metadata>
      <data name="Category" value="Impala"/>
      <data name="Category" value="Impala Query Options"/>
    </metadata>
  </prolog>

  <conbody>

    <p>
      The <codeph>DEFAULT_HINTS_INSERT_STATEMENT</codeph> query option sets the default hints
      for the <codeph>INSERT</codeph> statements with no optimizer hint specified.
    </p>

    <p>
      When there are hints specified in an <codeph>INSERT</codeph> statement, these default
      hints are ignored.
    </p>

    <p>
      You can specify multiple hints separated by '<codeph>:</codeph>'.
    </p>

    <p>
      For example:
    </p>

<codeblock>SET DEFAULT_HINTS_INSERT_STATEMENT=CLUSTERED;
SET DEFAULT_HINTS_INSERT_STATEMENT=SHUFFLE;
SET DEFAULT_HINTS_INSERT_STATEMENT=NOCLUSTERED:NOSHUFFLE; </codeblock>

    <p>
      The default hints apply to the HDFS and Kudu table formats and are ignored for the HBase
      table format.
    </p>

    <p>
      <b>Type:</b> <codeph>STRING</codeph>
    </p>

    <p>
      <b>Default:</b> none
    </p>

    <p>
      <b>Added in:</b> <keyword keyref="impala33"/>
    </p>

  </conbody>

</concept>