I created a database and set the default collation of the database to utfmf8_unicode_ci. I then exported empty tables that had a mix of utf8_unicode_ci and latin1_swedish_ci collation. When I go into each table, I want to change the default collation and all of the field's collation to utfmf8_unicode_ci. When I choose this option under Table->Options->Default Collation and click the Convert data checkbox, all of the fields change to utfmf8_unicode_ci, but when I save the changes, they all convert to utfmf8_general_ci. I can individually change each fiedl to utfmf8_unicode_ci, but that will take a long time. Why is this happening? Screen shots attached.
Setting default collation of a table is not working
I can confirm that. HeidiSQL sends such a query:
ALTER TABLE `ville` COLLATE='utf8mb4_unicode_ci', CONVERT TO CHARSET utf8mb4;
But the table has utf8mb4_general_ci afterwards.
If not this way, then how should the SQL look like in order to achieve a collation change in a table?
Even appending a collation to the
CONVERT clause does not change the column's collation:
ALTER TABLE `ville` COLLATE='utf8mb4_unicode_ci', CHARSET utf8mb4 COLLATE 'utf8mb4_unicode_ci';
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