9 years, 10 months ago Alexander Stehlik

Thanks for your reply but this does not really answer my question.

To be more precise: my question is: How can I influence the behavior of the following command:


When this command is executed the collation_connection variable is reset to utf8_general_ci, even if the value was different before (e.g. utf8_unicode_ci).

I would like this to default to utf8_unicode_ci without having to supply the COLLATE argument to the SET NAMES command. Is this possible? And if not: is this a bug / missing feature?

9 years, 10 months ago Alexander Barkov

There is no a way to change the default collation for a character set. Default collations are hard-coded. For example, utf8_general_ci is the hard-coded default collation for the character set utf8.

This is a missing feature.

The SQL standard has "CREATE CHARACTER SET" statement for this:

So one can do:

CREATE CHARACTER SET utf8my AS GET utf8 COLLATE utf8_unicode_ci;

and then use this:

SET NAMES utf8my;

which effectively sets the connection character set to utf8, and the collation to utf8_unicode_ci.

MariaDB does not support CREATE CHARACTER SET yet.

The only workaround is to make the application send:

SET NAMES utf8 COLLATE utf8_unicode_ci;

instead of just:

9 years, 10 months ago Alexander Stehlik

OK, thank you for the great explanation :)

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