docs/sql-error-conditions-collation-mismatch-error-class.md

layout: global title: COLLATION_MISMATCH error class displayTitle: COLLATION_MISMATCH error class license: | 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

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SQLSTATE: 42P21

Could not determine which collation to use for string functions and operators.

This error class has the following derived error classes:

EXPLICIT

Error occurred due to the mismatch between explicit collations: <explicitTypes>. Decide on a single explicit collation and remove others.

IMPLICIT

Error occurred due to the mismatch between multiple implicit non-default collations. Use COLLATE function to set the collation explicitly.