Marko Mäkelä 9a0cbd31ce MDEV-26294 Duplicate entries in unique index not detected when changing collation ...

ha_innobase::check_if_supported_inplace_alter(): Refuse to change the
collation of a column that would become or remain indexed as part of
the ALTER TABLE operation.

In MariaDB Server 10.6, we will allow this type of operation;
that fix depends on MDEV-15250.

2022-07-04 08:04:44 +03:00

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