docs/topics/impala_utf8_mode.xml

<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE concept PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
<concept id="utf8_mode">

 <title>UTF8_MODE Query Option</title>
 <titlealts audience="PDF"><navtitle>UTF8 MODE</navtitle></titlealts>
 <prolog>
  <metadata>
   <data name="Category" value="Impala"/>
   <data name="Category" value="Impala Query Options"/>
   <data name="Category" value="Troubleshooting"/>
   <data name="Category" value="Querying"/>
   <data name="Category" value="Developers"/>
   <data name="Category" value="Data Analysts"/>
  </metadata>
 </prolog>

 <conbody>
  <p>
   <indexterm audience="hidden">UTF8_MODE Query Option</indexterm> UTF-8 support allows string
   functions to recognize the UTF-8 characters, thus processing strings in a compatible way as other
   engines.</p>
  <p>You can use the new query option, UTF8_MODE, to turn on/off the UTF-8 aware behavior. The query
   option can be set globally, or at per session level. Only queries with UTF8_MODE=true will have
   UTF-8 aware behaviors. If the query option UTF8_MODE is turned on globally, existing queries that
   depend on the original binary behavior need to be explicitly set to UTF8_MODE=false.</p>

  <p><b>Type:</b>BOOLEAN</p>
  <p><b>Default:</b>FALSE</p>
  <p><b>Added in:</b>Impala 4.1</p>
  <p conref="../shared/impala_common.xml#common/related_info"/>
  <p>
   <xref href="impala_string.xml"/>,
   <xref href="impala_utf_8.xml"/>
  </p>
 </conbody>
</concept>