Adding A Simple Collation To An 8-Bit Character Set - Oracle 5.0 Reference Manual

10.4.3. Adding a Simple Collation to an 8-Bit Character Set

This section describes how to add a simple collation for an 8-bit character set by writing the
<collation>
Index.xml
adds a collation named
1. Choose a collation ID, as shown in
use an ID of 56.
2. Modify the
directory named by the
value as follows, although the path name might be different on your system:
mysql> SHOW VARIABLES LIKE 'character_sets_dir';
+--------------------+-----------------------------------------+
| Variable_name
+--------------------+-----------------------------------------+
| character_sets_dir | /user/local/mysql/share/mysql/charsets/ |
+--------------------+-----------------------------------------+
3. Choose a name for the collation and list it in the
for the character set to which the collation is being added, and add a
indicates the collation name and ID, to associate the name with the ID. For example:
<charset name="latin1">
...
<collation name="latin1_test_ci" id="56"/>
...
</charset>
4. In the
latin1.xml
that contains a
codes 0 to 255. Each value within the
<collation name="latin1_test_ci">
<map>
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F
20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F
30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F
40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F
50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F
60 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F
50 51 52 53 54 55 56 57 58 59 5A 7B 7C 7D 7E 7F
80 81 82 83 84 85 86 87 88 89 8A 8B 8C 8D 8E 8F
90 91 92 93 94 95 96 97 98 99 9A 9B 9C 9D 9E 9F
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF
B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF
41 41 41 41 5B 5D 5B 43 45 45 45 45 49 49 49 49
44 4E 4F 4F 4F 4F 5C D7 5C 55 55 55 59 59 DE DF
41 41 41 41 5B 5D 5B 43 45 45 45 45 49 49 49 49
44 4E 4F 4F 4F 4F 5C F7 5C 55 55 55 59 59 DE FF
</map>
</collation>
5. Restart the server and use this statement to verify that the collation is present:
mysql> SHOW COLLATION LIKE 'latin1_test_ci';
+----------------+---------+----+---------+----------+---------+
| Collation
+----------------+---------+----+---------+----------+---------+
| latin1_test_ci | latin1
Adding a Simple Collation to an 8-Bit Character Set
In addition, before upgrading, you should save the configuration files that you
change. If you upgrade in place, the process will replace the your modified files.
elements associated with a
file. The procedure described here does not require recompiling MySQL. The example
latin1_test_ci
and
Index.xml latin1.xml
character_sets_dir
| Value
configuration file, add a
element that defines a character code-to-weight mapping table for character
<map>
| Charset | Id | Default | Compiled | Sortlen |
| 56 |
character set description in the MySQL
<charset>
to the character set.
latin1
Section 10.4.2, "Choosing a Collation
configuration files. These files will be located in the
[443] system variable. You can check the variable
Index.xml
<collation>
element must be a number in hexadecimal format.
<map>
| |
812
ID". The following steps
|
file. Find the
<charset>
<collation>
element that names the collation and
1 |
element
element that