I pushed this patch in a mistake to 11.7 instead of 11.6.
Backporting from 11.7.
This is a workaround patch to make buildbot green.
Renaming databases from db1/DB2 to m33020_db1/m33020_DB1
to make them unique. So the garbage left by other tests
does not show up any more.
The real problem will be fixed under terms of:
MDEV-35282 Performance schema does not clear package routines
Under terms of MDEV 27490 we'll add support for non-BMP identifiers
and upgrade casefolding information to Unicode version 14.0.0.
In Unicode-14.0.0 conversion to lower and upper cases can increase octet length
of the string, so conversion won't be possible in-place any more.
This patch removes virtual functions performing in-place casefolding:
- my_charset_handler_st::casedn_str()
- my_charset_handler_st::caseup_str()
and fixes the code to use the non-inplace functions instead:
- my_charset_handler_st::casedn()
- my_charset_handler_st::caseup()
