| <?xml version="1.0" encoding="UTF-8"?> |
| <!-- |
| 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. |
| --> |
| <!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> |