Aikesheng Open Source Community
Apr 1, 2025 · Databases
Resolving Column Length Expansion Errors in OceanBase: Charset and Collation Considerations
This article explains why altering a column length in OceanBase may trigger an "Alter charset or collation type not supported" error, analyzes the underlying charset and collation settings, and provides a solution that explicitly specifies charset and collation to ensure successful column expansion across versions.
CharsetCollationColumn Expansion
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