Bug #71564 Combining characters in mysql monitor
Submitted: 3 Feb 2014 11:34 Modified: 7 Feb 2014 18:16
Reporter: Daniël van Eeden (OCA) Email Updates:
Status: Verified Impact on me:
None 
Category:MySQL Server: Command-line Clients Severity:S3 (Non-critical)
Version:5.6.15 OS:Any
Assigned to: CPU Architecture:Any

[3 Feb 2014 11:34] Daniël van Eeden 
Description:
The width of a column in a result table is not calculated correctly if there are combining characters.

Related to Bug #17939 and Bug #71563

How to repeat:
mysql> SELECT name, HEX(name), LENGTH(name), CHAR_LENGTH(name) FROM t1;
+----------+------------------+--------------+-------------------+
| name     | HEX(name)        | LENGTH(name) | CHAR_LENGTH(name) |
+----------+------------------+--------------+-------------------+
| Daniël   | 44616E69C3AB6C   |            7 |                 6 |
| Daniël  | 44616E6965CC886C |            8 |                 7 |
+----------+------------------+--------------+-------------------+
2 rows in set (0.00 sec)

Suggested fix:
calculate string length after unicode normalization
[7 Feb 2014 13:22] Peter Laursen 
I posted this
http://bugs.mysql.com/bug.php?id=71625
[7 Feb 2014 18:16] Sveta Smirnova 
Thank you for the report.

Verified as described. However, I think reason is the same bug #71563