Re: LOWER() influences utf8_bin collation?
Posted by: Rick James
Date: April 21, 2014 11:43PM

Please file a bug at
http://bugs.mysql.com
(and post the url here)

Nothing looks fishy here (except the order):
SELECT hex(a), a, lower(a), hex(lower(a)), charset(lower(a)), collation(lower(a)) FROM f612862 ORDER BY LOWER(a);

+--------+------+----------+---------------+-------------------+---------------------+
| hex(a) | a    | lower(a) | hex(lower(a)) | charset(lower(a)) | collation(lower(a)) |
+--------+------+----------+---------------+-------------------+---------------------+
| 6D     | m    | m        | 6D            | utf8              | utf8_bin            |
| 61     | a    | a        | 61            | utf8              | utf8_bin            |
| 6262   | bb   | bb       | 6262          | utf8              | utf8_bin            |
| 6B6B6B | kkk  | kkk      | 6B6B6B        | utf8              | utf8_bin            |
| 7474   | tt   | tt       | 7474          | utf8              | utf8_bin            |
| 7A7A7A | zzz  | zzz      | 7A7A7A        | utf8              | utf8_bin            |
+--------+------+----------+---------------+-------------------+---------------------+

That was using 5.6.12.

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Re: LOWER() influences utf8_bin collation?
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