Of Richard Hipp
Sent: 17 February 2016 15:11
To: SQLite mailing list
Subject: Re: [sqlite] Possible error using length on UTF-8 characters
On 2/17/16, Glyn Jones wrote:
> My code behaves differently:
> % package require sqlite3
> 3.8.11.1
> % sqlite3 db :memory:
> % db eval {CREATE
On Wed, Feb 17, 2016 at 2:59 PM, Glyn Jones wrote:
> Agreed.
> The problem is that "length(id)" returns double the number of UTF-8
> characters, rather than the actual number input to the field using "insert".
>
According to the docs, i does that only if you've stored the data as a
BLOB, not
ubject: Re: [sqlite] Possible error using length on UTF-8 characters
On 2/17/16, Glyn Jones wrote:
> I set the schema to TEXT, but that apparently makes no difference!
>
> I'm using the TCL interface:
>
> set id "???"
> db eval {insert into users (id, name) values (:id, :name
On Wed, Feb 17, 2016 at 2:36 PM, Glyn Jones wrote:
> The field is TEXT:
>
> sqlite> .schema operators
> CREATE TABLE operators (
> uid INTEGER PRIMARY KEY,
> id TEXT UNIQUE NOT NULL CHECK(length(id) BETWEEN 1 AND 20),
> name TEXT
On Wed, Feb 17, 2016 at 11:53 AM, Glyn Jones wrote:
> My database is configured with encoding "UTF-8".
> I have a table with a constraint check for 20 characters on a column. This
> mostly works, but sometimes has some strange behaviour.
>
> One character in particular has caused a problem. The
> No. I think you are confused about how UTF8 works.
>
> The hexadecimal shown above is a 6-character string as follows:
>
> "\u00c2\u00ac\u00c2\u00ac\u00c2\u00ac"
>
> You are wanting this three-character string:
>
> "\uc2ac\uc283\uc283"
>
> The hex encoding of the string you want
Of Stephan Beal
Sent: 17 February 2016 14:09
To: SQLite mailing list
Subject: Re: [sqlite] Possible error using length on UTF-8 characters
On Wed, Feb 17, 2016 at 2:59 PM, Glyn Jones wrote:
> Agreed.
> The problem is that "length(id)" returns double the number of UTF-8
> chara
linglists.sqlite.org] On Behalf Of Meinlschmidt
Stefan
Sent: 17 February 2016 13:57
To: sqlite-users at mailinglists.sqlite.org
Subject: Re: [sqlite] Possible error using length on UTF-8 characters
> sqlite> select hex(id) from operators;
> C382C2ACC382C2ACC382C2AC
This is hex utf8 for "
> sqlite> select hex(id) from operators;
> C382C2ACC382C2ACC382C2AC
This is hex utf8 for "??", i.e. 3? 0xc2 0xac, which again is utf8
for "?" (0xac)
S.M.
--
Dipl.-Phys. (Univ) Stefan Meinlschmidt, Senior Software Engineer
Am Wolfsmantel 46, 91058 Tennenlohe, Germany
Tel: +49-8458-3332-531
m: sqlite-users-bounces at mailinglists.sqlite.org
[mailto:sqlite-users-boun...@mailinglists.sqlite.org] On Behalf Of Richard Hipp
Sent: 17 February 2016 13:39
To: SQLite mailing list
Subject: Re: [sqlite] Possible error using length on UTF-8 characters
On 2/17/16, Glyn Jones wrote:
> My database i
The field is TEXT:
sqlite> .schema operators
CREATE TABLE operators (
uid INTEGER PRIMARY KEY,
id TEXT UNIQUE NOT NULL CHECK(length(id) BETWEEN 1 AND 20),
name TEXT CHECK(length(trim(name)) > 0)
);
Glyn.
My database is configured with encoding "UTF-8".
I have a table with a constraint check for 20 characters on a column. This
mostly works, but sometimes has some strange behaviour.
One character in particular has caused a problem. The hex value is "C2AC" - the
"NOT SIGN (U+00AC)".
Hopefully the
On 2/17/16, Glyn Jones wrote:
> My code behaves differently:
> % package require sqlite3
> 3.8.11.1
> % sqlite3 db :memory:
> % db eval {CREATE TABLE users(id,name);}
> % set id "???"
> ???
> % db eval {insert into users (id, name) values (:id,:id)}
> % db eval {select hex(id) from users}
>
On 2/17/16, Glyn Jones wrote:
> I set the schema to TEXT, but that apparently makes no difference!
>
> I'm using the TCL interface:
>
> set id "???"
> db eval {insert into users (id, name) values (:id, :name)}
>
When I run this script:
sqlite3 db :memory:
db eval {CREATE TABLE users(id,name);}
On 2/17/16, Richard Hipp wrote:
> On 2/17/16, Glyn Jones wrote:
>> sqlite> select hex(id) from operators;
>> C382C2ACC382C2ACC382C2AC
>>
>> This should show three characters of values "C2AC", and when I read from
>> the
>> DB and display on an HTML page I do see " ???"
>>
>
> No. I think you
On 2/17/16, Glyn Jones wrote:
> sqlite> select hex(id) from operators;
> C382C2ACC382C2ACC382C2AC
>
> This should show three characters of values "C2AC", and when I read from the
> DB and display on an HTML page I do see " ???"
>
No. I think you are confused about how UTF8 works.
The
On 2/17/16, Glyn Jones wrote:
> My database is configured with encoding "UTF-8".
> I have a table with a constraint check for 20 characters on a column. This
> mostly works, but sometimes has some strange behaviour.
>
> One character in particular has caused a problem. The hex value is "C2AC" -
>
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