RE: About Unicode IVS

荒井元成 <n2029@xxxxxxxxxxxxx> · Tue, 29 Mar 2022 18:55:29 +0900

thank you for your reply.
Changing the collation order and CTYPE did not change the behavior.

   名前    | 所有者  | エンコーディング |  照合順序   | Ctype(変換演算子) |    アクセス権限
-----------+---------+------------------+-------------+-------------------+---------------------
 D209007   | D209007 | UTF8             | C           | C                 |
 postgres  | D209007 | UTF8             | C           | C                 |
 template0 | D209007 | UTF8             | C           | C                 | =c/D209007         +
           |         |                  |             |                   | D209007=CTc/D209007
 template1 | D209007 | UTF8             | C           | C                 | =c/D209007         +
           |         |                  |             |                   | D209007=CTc/D209007
 template2 | D209007 | UTF8             | ja_JP.UTF-8 | ja_JP.UTF-8       |
(5 行)

D209007=# \c template2
データベース"template2"にユーザ"D209007"として接続しました。
template2=# select char_length(U&'\+0000E6' || U&'\+000300');
 char_length
-------------
           2
(1 行)

template2=# select char_length(U&'\+008FBA' || U&'\+0E0102');
 char_length
-------------
           2
(1 行)

template2=# select length(U&'\+008FBA' || U&'\+0E0102');
 length
--------
      2
(1 行)

Moto.

From: Michel SALAIS <msalais@xxxxxxx> 
Sent: Tuesday, March 29, 2022 6:35 PM
To: '荒井元成' <n2029@xxxxxxxxxxxxx>; 'David G. Johnston' <david.g.johnston@xxxxxxxxx>
Cc: pgsql-admin@xxxxxxxxxxxxxxxxxxxx
Subject: RE: About Unicode IVS

Hi,
I think this has something to do with collation and ctype. As I see you have it set to “C” for all your databases (even if I don’t understand your titles 😊).

Michel SALAIS

De : 荒井元成 <n2029@xxxxxxxxxxxxx> 
Envoyé : mardi 29 mars 2022 06:35
À : 'David G. Johnston' <david.g.johnston@xxxxxxxxx>
Cc : pgsql-admin@xxxxxxxxxxxxxxxxxxxx
Objet : RE: About Unicode IVS

thank you for your reply.
It will be 2 characters.

select char_length(U&'\+008FBA' || U&'\+0E0102');
char_length
-------------
           2
(1 行)

select length('辺󠄂');
length
--------
      2
(1 行)

select char_length('辺󠄂');
char_length
-------------
           2
(1 行)

$ psql -l
                                      データベース一覧
   名前    | 所有者  | エンコーディング | 照合順序 | Ctype(変換演算子) |    アクセス権限
-----------+---------+------------------+----------+-------------------+---------------------
D209007   | D209007 | UTF8             | C        | C                 |
postgres  | D209007 | UTF8             | C        | C                 |
template0 | D209007 | UTF8             | C        | C                 | =c/D209007         +
           |         |                  |          |                   | D209007=CTc/D209007
template1 | D209007 | UTF8             | C        | C                 | =c/D209007         +
           |         |                  |          |                   | D209007=CTc/D209007
(4 行)

$ cat pgdata/PG_VERSION
13

Moto.

From: David G. Johnston <david.g.johnston@xxxxxxxxx> 
Sent: Tuesday, March 29, 2022 12:38 PM
To: 荒井元成 <n2029@xxxxxxxxxxxxx>
Cc: pgsql-admin@xxxxxxxxxxxxxxxxxxxx
Subject: Re: About Unicode IVS

On Monday, March 28, 2022, 荒井元成 <n2029@xxxxxxxxxxxxx> wrote:
Hi,

In the Length () function, it will be 2 characters where you want it to be 1 character.
Is it possible to respond by changing the settings such as changing the collation setting like SQL Server?
Also, if you understand how to deal with it (eg, create your own function), it would be helpful if you could provide as much information as you can.

Try char_length(text) instead.

David J.