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  1. MariaDB Server
  2. MDEV-8334

Rename utf8 to utf8mb3

        Details

        • Type: Bug
        • Status: Open
        • Priority: Major
        • Resolution: Unresolved
        • Affects Version/s: 10.1, 10.0, 5.5
        • Fix Version/s: 10.2
        • Component/s: None
        • Labels:
          None

          Description

          Currently MariaDB's has two utf8 character sets:

          • utf8 that can store 1 to 3 byte characters and implements Unicode BMP range U+0000..U+FFFF
            This character set is also available under name "utf8mb3"
          • utf8mb4 that cat store 1 to 4 byte characters and implements the full Unicode standard range U+0000..U+10FFFF.

          In long terms we want the name utf8 mean the full featured UTF-8.
          We'll do a few preparatory steps:

          1. Change the main name of the 3-byte character set from "utf8" to "utf8m3" and make "utf8" alias for "utf8mb3". This will change all SHOW and INFORMATION_SCHEMA output to display utf8mb3 instread of utf8, as well as change mysqldump to dump utf8mb3 instead of just utf8.

          2. Add a new server option, say --utf8-is-utf8mb3, which will be true by default, but the DBA will be able to change it to false and thus make "utf8" mean "utf8mb4".

          3. A few releases later we'll change --utf8-is-utf8mb3 to be "false" by default.

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                blocks

                Bug - A problem which impairs or prevents the functions of the product. MDEV-7128 Configuring charsets or collations as utf8 yields surprising result and leads to data loss

                • Major - Major loss of function.
                • Open
                relates to

                Bug - A problem which impairs or prevents the functions of the product. MDEV-8765 mysqldump silently corrupts 4-byte UTF-8 data

                • Major - Major loss of function.
                • Open

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                    • Assignee:
                      bar Alexander Barkov
                      Reporter:
                      bar Alexander Barkov
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                      Dates

                      • Created:
                        Updated: