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Character sets

Last Updated: Jun 18, 2021

ApsaraDB for OceanBase supports the following character sets:

  • UTF8MB4: variable-length encoding. The maximum length is 4 bytes.
  • BINARY: fixed-length encoding. The fixed length is 1 byte.

UTF8 (or UTF8MB3) is a subset of UTF8MB4. UTF8 is a variable-length encoding scheme that uses a maximum of 3 bytes to encode a character. To support seamless migration, ApsaraDB for OceanBase considers UTF8 as the synonym of UTF8MB4 in terms of the syntax.