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MDEV-31531 Remove my_casedn_str() and my_caseup_str()

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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()
This commit is contained in:
Alexander Barkov
2023-06-23 13:24:02 +04:00
parent de9c357284
commit 929c2e06aa
103 changed files with 1282 additions and 1248 deletions
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2
mysql-test/main/func_json.result
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@ -1599,7 +1599,7 @@ select json_arrayagg(a) from t1;
json_arrayagg(a)
["x64-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"]
Warnings:
Warning 1260 Row 1 was cut by JSON_ARRAYAGG()
Warning 1260 Row 1 was cut by json_arrayagg()
drop table t1;
SET group_concat_max_len= default;
create table t1 (col1 json);