Questions tagged [character-set]
The character-set tag has no usage guidance.
123
questions
0
votes
1answer
22 views
Question marks instead Hebrew characters after mysql dump and import
I tried to migrate my AWS RDS instance from Aurora to MySQL. I created a dump file from the Aurora and imported it into the MySQL instance.
Both instances have the same characters set.
mysql> ...
0
votes
2answers
22 views
How to force mysqldump to produce /*!40101 SET character_set_client = utf8mb4 */;
I am attempting to dump my database, which is set to, and only contains, utf8mb4 and appropriate collations. I use the following line:
mysqldump --add-drop-table --add-locks --allow-keywords --...
0
votes
0answers
26 views
Will MariaDB treat ut8/utf8mb3 and utf8mb4 collations as compatible?
Background on relevant character sets
MySQL and MariaDB support the deprecated utf8mb3 character set and collations. (utf8 is currently an alias for utf8mb3.) This supports all Unicode code points on ...
0
votes
1answer
70 views
ORACLE DMU (database migration assistant for unicode) Tool
Reading the documentation for Oracle DMU tool, when I try the step create a step for DMU Repository tablespace the document says to use the result of the query for initial size. However; I could not ...
0
votes
0answers
20 views
ALTER TABLE query to convert table to utf8mb4_bin takes many hours - how to optimise this?
I have a table which has approx 15 million rows - I won't add the schema here but it has 96 columns (far too many in my opinion).
The current table collation is latin1_swedish_ci but for full emoji ...
2
votes
2answers
48 views
charindex thrown off by extended characters
I've got a column with a filenames stored in a nvarchar(255). I'm trying to parse out the file extension using
reverse( left( reverse(filename), charindex('.', reverse(filename) ) -1 ) )
This works ...
5
votes
1answer
139 views
Query to find rows containing ASCII characters in a given range
I am using some scripts from another topic, but the accepted answer isn't working for all my data scenarios. I would have asked my question on the original How to check for Non-Ascii Characters post, ...
2
votes
2answers
59 views
How to bulk convert ISO8859 text in Text columns to UTF8 in nvarchar(max) columns?
I've been struggling for days with a problem on a MS SQL database. Here is the situation: I have an old Open Source PHP application (Limesurvey version 1.92) running on a Windows 2008R2 server, with ...
1
vote
1answer
40 views
Is there a MySQL character set and encoding that will allow for both emojis and accents?
I've got a database of terms that get added to by one group of users, and queried against by another.
I was running into problems when people would query for an emoji in the database and my React app ...
0
votes
2answers
83 views
Which characters are considered “word” characters
Fulltext searchin with InnoDB in MySQL only includes certain characters referred to in the docs as "word characters" and mentioned here:
For the built-in full-text parser, you can change the set of ...
0
votes
1answer
481 views
Character set 'utf8mb4' is not a compiled character set and is not specified in the '/usr/share/mysql/charsets/Index.xml' file
Full error
Character set 'utf8mb4' is not a compiled character set and is not specified in the '/usr/share/mysql/charsets/Index.xml' file
InvalidArgumentException: There was a problem connecting to ...
3
votes
2answers
2k views
Change default collation for character set utf8mb4 to utf8mb4_unicode_ci
When creating a database without specifying a character set or collation the servers defaults are used (as expected).
MariaDB [(none)]> SHOW VARIABLES LIKE '%_server' ;
+----------------------+----...
0
votes
1answer
52 views
Postgres special character rendering
I have an old Sql Server db with a ‘free entry’ field that is being accessed via a Postgres 10.6 foreign table. This field contains a lot of garbage characters (higher than Ascii 128) which Postgres ...
0
votes
1answer
62 views
MySQL: columns with mixed character encodings, and finding columns which have multibyte data
I have some rather large CSV files that I am loading into my MySQL 5.7 database. The files are several gigabytes in size, several million lines long, and have large column widths that must be used in ...
1
vote
1answer
80 views
Why doesn't MySQL coerce the collation to the column-specified, when comparing to a literal?
I have a table with a collation defined on a column:
CREATE TEMPORARY TABLE test_table (
utf8_col VARCHAR(255) CHARACTER SET utf8 COLLATE utf8_bin
);
INSERT INTO test_table VALUES('ã');
According ...
-1
votes
1answer
755 views
Incorrect string value: '\xF0\x9F\xA4\x96<b…' for column 'body' at row 1 [closed]
I've set the column type to utf8mb4 and the collation to utf8mb4_bin.
The table defaults are also utf8mb4 and utf8mb4_bin.
When I use SequelPro to add the emoji "🤖" to the database manually, it ...
1
vote
1answer
110 views
MySQL utf8mb4 Migration - Replication Considerations
We're planning to migrate a MySQL database with a mix utf8 and latin1 tables to the new utf8mb4 character set per this article: https://mathiasbynens.be/notes/mysql-utf8mb4.
Our server is 5.7.22 and ...
2
votes
2answers
227 views
Using CONVERT TO CHARACTER SET for changing only collation?
I think the answer to this is an obvious yes, but I'm having trouble finding confirmation on it. All the questions related to charsets seems to be about changing the charset and not only collations.
...
0
votes
0answers
186 views
Resolving “there is unknown charset/collation names” warnings on views
I recently moved our MySQL 5.6 server over to MariaDB 10.3.10 and, for the most part, have not had any problems. We have a couple of databases that have close to 1000 views which are now filling the ...
2
votes
2answers
549 views
How do I use 'N' in my prepared SELECT statement
I'm connecting to an SQL Server 2008 database using pdo and the ODBC Driver 13 for SQL Server.
I'm trying to run the following query which searches the database for Chinese characters:
SELECT TOP (...
12
votes
1answer
4k views
Error starting SQL Server 2017 service. Error Code 3417
I have SQL Server 2017 installed on my computer. This is what SELECT @@VERSION returns:
Microsoft SQL Server 2017 (RTM-GDR) (KB4293803) - 14.0.2002.14 (X64) Jul 21 2018 07:47:45 Copyright (C) ...
1
vote
2answers
645 views
Wrong sort order using utf8_unicode_ci and swedish characters like ö
I am confused about what encoding and collation I should use so my queries returns the correct sort order.
Right now my encoding is UTF-8 Unicode and collation utf8_unicode_ci for both firstname and ...
1
vote
1answer
54 views
Convert Character Encoding, and Check Encoding for Issues
I'm planning to convert a table from utf8 (_general_ci) to utf8mb4 (utf8mb4_unicode_ci). I want to make sure I don't have any malformed data after the conversion though so I was planning to duplicate ...
0
votes
1answer
297 views
Apostrophe shows up as “ÔÇÖ” [closed]
I pulled data out of a database and the apostrophe is showing up as "ÔÇÖ". What character set is this from?
1
vote
2answers
398 views
MySQL does not read user specific options in ~/.my.cnf
I want the server to run an initial SQL query every time it starts:
[mysqld]
init-connect='SET NAMES utf8mb4'
and I want it to be only user specific not globally. so I created a .my.cnf in my user's ...
0
votes
1answer
315 views
Using character set en_us.364 in Informix database DB_LOCALE
I am trying to change my db_locale to en_us.364 which is an ASCII character set. It says on IBM's Knowledge Center that 364 is a valid character set:
https://www.ibm.com/support/knowledgecenter/en/...
1
vote
0answers
230 views
Converting and/or enforcing an Ascii Character Set in Informix database from 819 or ISO Latin 1
Overview: In Informix is it possible to enforce ASCII for a database or instance.
Details: I am trying to enforce ASCII in an instance of informix for a while. This is to help have a smooth ...
0
votes
2answers
2k views
How to fix accented character substitutions on French text in MySQL db
I'm building a small database for a charity I volunteer with. It will track events in English and French. When I enter characters like an accented e (as in "journée") it appears in the database as (...
17
votes
4answers
10k views
Why does the varchar datatype allow unicode values?
I have a table with a varchar column. It is allowing Trademark(™), copyright(©) and other Unicode characters as shown below.
Create table VarcharUnicodeCheck
(
col1 varchar(100)
)
insert into ...
1
vote
1answer
2k views
convert default charset utf8 tables to utf8mb4 mysql 5.7.17
I tried the following steps to upgrade CHARSET to utf8mb4 and to connect it to the existing backend server.
ALTER TABLE users CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
update the ...
1
vote
0answers
510 views
Oracle Character Set/Database 11 to 12 Migration Options
Topic/Questions: Oracle Character Set/Database 11 to 12 Migration Options
Task:
Migrating production Oracle EE 11.2.0.4 single instance database with NLS_CHARACTERSET WE8ISO8859P1 to existing remote ...
1
vote
1answer
1k views
Issue with Hebrew characters in mysql
Lately i have migrated some schemas from mysql 4 to mysql 5.6. Everything works fine except one issue: Hebrew characters appears in Gibberish.
Here is the current configuration:
SHOW VARIABLES LIKE '...
5
votes
1answer
2k views
How do I list all available encoding types available in postgreSQL?
SELECT datname, pg_encoding_to_char(encoding)
FROM pg_database;
…lists all the databases, each with its encoding type.
However, I am trying to find out what are all the encoding types available in ...
1
vote
2answers
10k views
How do I set MySQL's “character_set_server” and “collation_server” variables when creating a database?
I'm using MySQL 5.5.37. How do I set the default "" and "" variables of my database when initially creating my db? I'm logged in as the root user but my command is not cutting it, as you can see ...
1
vote
1answer
801 views
German umlaute represented by questionmarks when latin1 is used
I'm almost certain this has come up before but I couldn't find anything regarding it.
My problem is that I've a database and a database server (and every table and column inside) set to latin1/...
1
vote
0answers
324 views
Loading MySQL Dump From one Character Set to Another
As you can see from these configuration differences, the MySQL server is configured with latin1, while the MariaDB server is using utf8mb4:
Variable MySQL Server MariaDB Server
...
2
votes
1answer
3k views
Converting character sets and foreign key constaints
I'm trying to convert the character set and collation of my MySQL database and all containing tables from utf8/utf8_unicode_ci to utf8mb4/utf8mb4_unicode_ci.
I will refer to my database name as: MyDB
...
1
vote
1answer
202 views
Error during CSSCAN of Oracle11 database
I have an issue when trying to change the character set on an Oracle 11.2 database.
Here are the particulars:
Oracle 11.2 64 bit, running under Oracle Linux 7
This is a new installation (i.e. the ...
5
votes
1answer
3k views
Collations and codesets in PostgreSQL 9.x
In Windows 7, the collation is set to "English_United States.1252" when I select the "English, United States" locale in the installer. In Linux, the collation is set to "en_US.UTF-8" by default.
I ...
1
vote
1answer
1k views
Character set query in Oracle12c
I have created my Oracle 12c database with database character set as AL32UTF8 and I have been told by the developers that it needs to be changed to UTF8.
National character set is UTF8.
Is it ...
1
vote
1answer
996 views
How do MariaDB and MySQL differ in character set handling?
In MySQL/MariaDB, I set the connection character set to UTF-8:
SET NAMES 'utf8mb4';
SET CHARACTER SET 'utf8mb4';
There are some tables with a latin1_swedish_ci collation and latin1 encoded data in ...
1
vote
2answers
4k views
CMD prompt can't display Unicode characters that are stored in oracle database correctly
I've been meddling with charset/encoding problems of Oracle database, PL/SQL developer and JDBC and these are what I want to achieve:
Input Unicode characters from a browser into the database
Display ...
2
votes
2answers
3k views
UTF8 Trouble while migrating from MSSQL to MySQL with MySQL Workbench
I am tasked with migrating part of our database from an on-site MSSQL server to an Amazon RDS MySQL. This will be my first attempt with a database migration, so I am doing a dry run from our MSSQL ...
0
votes
1answer
2k views
Stored Procedure Is Slower Than Query Due to Collation
I'm running two servers with MySql installed. I'm having an issue with a slow stored procedure (approximately 3 secs vs 0.1 seconds), solely on my production server, that is very quick on development ...
1
vote
3answers
1k views
character set, not set correctly
I have two database with a table with utf8 table, I wanted to change the encoding of a column, I used two scenarios but a problem happened to me.
at first the table was like this :
CREATE TABLE `...
2
votes
1answer
4k views
ERROR 1071 (42000): Specified key was too long; max key length is 767 bytes
I have a databases with latin1 charachter set, I need to change tables character set to utf8, but I get error. the current character set is :
mysql> show variables like "%character%";
+-----------...
1
vote
1answer
2k views
How large space will be occupied by mysql for a varchar utf8 column?
Tip: To save space with UTF-8, use VARCHAR instead of CHAR. Otherwise, MySQL must reserve three bytes for each character in a CHAR CHARACTER SET utf8 column because that is the maximum possible length....
1
vote
1answer
930 views
What are the side effects of changing MySQL `character_set_server`?
I am having some strange issues with character sets on my system. After digging through all kinds of settings, I found a discrepancy in my character set settings.
When I run show variables like '...
0
votes
2answers
81 views
Convert all the data of table (which have both encoding data) into single encoding either utf8 or latin1 [closed]
We have table which consists of two different encoding data (utf8 and latin1) which has been inserted from two different use cases of application. We are getting broken strings issue for other ...
0
votes
1answer
252 views
howto choose the right character set in MariaDB
if there are multiple character sets that can properly encode my data, how to choose one?
Is there any difference in disk or memory usage?
When joining tables do they need the same char set?
Other ...
