A collation is a set of rules that determine how data is sorted and compared for comparing characters in a character set.

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Why are there different Database Collations for different languages? [closed]

There are different database collations, I want to know the need for different database collations with respect to different languages.
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28 views

SQL Server to MySQL migration, replace '\xA0' with a regular space

I am having some trouble while migrating data from SQL Server to MySQL--it seems some data does not want to place nice. I am recieving the error: Incorrect string value: '\xA0\xA0' for column '...
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1answer
138 views

How do I set a SQL Server Unicode / NVARCHAR string to an emoji or Supplementary Character?

I want to set a Unicode string variable to particular character based on its Unicode code point. I want to use a code point beyond 65535, but the SQL Server 2008 R2 database has a collation of ...
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1answer
38 views

Databases created with different collations - why?

We have a SQL Server 2014 instance, which houses many related databases. New ones are added via our script regularly. When our app is used to create the database - the databases are created with ...
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0answers
28 views

SQL Server Collation conflict

The problem is, one of the server had wrong collation, so I tried fixing it by using sqlservr -m -T4022 -T3659 -s"" -q" SQL_Latin1_General_CP1_CI_AS". It worked perfectly, it fixed all the system ...
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0answers
23 views

What do LC_TIME and LC_NUMERIC settings actually change in PostgreSQL?

According to the PostgreSQL 9.5 documentation, LC_TIME affects "Formatting of dates and times" and LC_NUMERIC - "Formatting of numbers", but I can't seem to see any difference from changing these. ...
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1answer
51 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 ...
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19 views

Trying to fix collation mess

In our MySQL database we have set several collations. e.g. Connection collation utf8_unicode_ci Server configured default collation utf8_unicode_ci Database default collation utf8_general_ci Table ...
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0answers
65 views

Search for Arabic text ignoring diacritics, alef hamza differences, and kashida in SQL and oracle

Well, I have a table with an Arabic column which may contains variant forms of the same word in multiple rows, for example the word "أسمى" might be in the following forms: 1- with diacritics: "...
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3answers
136 views

Collation conflict … Could not use dbo.sysdac_instances

After a migration of databases to a new 2014 server with default collation Latin1_General_CI_AS, but where most of the databases have a collation of Latin1_General_BIN, an attempt to import an Excel ...
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2answers
44 views

Can a table column be written to treat two different values as the same value?

The title is a bit generic, but the specific issue is that the United Kingdom of Great Britain and Northern Ireland has two commonly used 2-character codes. ISO 3166-1 specifies the code GB as the ...
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1answer
44 views

How do I make a locale available in Postgresql?

I needed to add new locales to our postgresql server (PostgreSQL 9.4.4 on x86_64-unknown-linux-gnu, compiled by gcc (Ubuntu 4.8.2-19ubuntu1) 4.8.2, 64-bit ). As the locales were not yet installed on ...
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1answer
51 views

Cloning a database to another collation

I'm not sure if this is the best way to migrate data to another collation but I've done the following: Scripted the source database and changed the collation in the script to my required one Ran the ...
3
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0answers
57 views

Import from dbf - collation

I select data from dbf files through OPENROWSET Visual FoxPro OLEDB. Despite forcing collation on columns (e.g. SELECT name COLLATE Polish_CI_AS FROM Employees) the polish specific characters keep ...
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1answer
78 views

What is default behavior of PostgreSQL without specifying COLLATION?

What is default behavior of PostgreSQL, if i don't specify collation externally? One of the main questions, is it case-sensitive or not?
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1answer
187 views

mysqldump collation issues

I have tried my hand at building a shell script to backup our wordpress database using tar balls and chron jobs on a Debian environment. The problem I am facing now is that our wp database after ...
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0answers
42 views

Characterset in SQL Server - Migrating data from Oracle 8i to SQL Server 2012

I'm migrating data from Oracle 8i to a new MS SQL Server instance (2012). My Oracle database has: NLS_CHARACTERSET = US7ASCII I'm completely new to SQL Server - how do I configure the SQL Server ...
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1answer
130 views

Cannot set character_set_database and character_set_server to utf8mb4

I'm trying to convert my MySQL server and its already existing schemas to the utf8mb4 character set. Preliminary Notes: I'm using Xampp (with MySQL 5.6.24). Default options are read from the ...
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1answer
67 views

Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_turkish_ci,IMPLICIT) for operation '=' and why?

Hello I got error in mariadb. In my command two columns have different collate. one is utf8_unicode_ci (a) other is utf8_turkish_ci (b). Why I got error when I compare these columns ( where a = b ) ...
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0answers
58 views

Azure SQL DB migration from Visual Studio raises collation error

I want to run a migration in my Azure hosted database. The migration works perfect in several local machines. When I try targeting the Azure database it raises the following exception: Column X is ...
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0answers
76 views

Output from `pg_dump --schema-only` has inconsistent order

I'm trying to compare schemas between 2 (identical) databases using pg_dump --schema-only in PostgreSQL 9.3.9, but the diff of the output shows the ordering is inconsistent for two triggers: ...
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1answer
784 views

“String or binary data would be truncated” error copying nvarchar(10) to char(10)

I am inserting values from one SQL table / column into another. The datatypes are different for these columns due to other reasons but I do not understand why nvarchar(10) source and char(10) ...
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1answer
344 views

How to find values with multiple consecutive upper case characters

For a project that I am working on, I need to identify values that have incorrect uppercase. For example, I need it to identify the following types of values: Mr JOHN Smith MR John Smith Mr John ...
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2answers
194 views

Contained DB Collation error

When changing a database to partially contained I am getting the following error: Cannot resolve the collation conflict between "Latin1_General_CI_AS" and "Latin1_General_100_CI_AS_KS_WS_SC" in ...
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1answer
830 views

COLLATION and UNION ALL

I have the following queries: SELECT * FROM OPENQUERY([SERVERA], 'SELECT ''SERVERA'',[PhoneNum] ,[PhoneExt] ,COUNT(2) as CNT FROM [DB].[dbo].[ResourcePhone] WHERE PhoneNum like ''+...
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1answer
110 views

What is Collation Compatibility_60_406_30001 in SQL Server

We have an SQL Server 2014 (recently upgraded from 2008 R2) instance where one of the databases has some strange settings for collation: In the Properties window for the database we have the ...
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4answers
1k views

What's up with the collation of some columns in sys.databases?

I'm attempting to run an UNPIVOT on various columns contained in sys.databases across various versions of SQL Server, ranging from 2005 to 2012. The UNPIVOT is failing with the following error ...
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0answers
63 views

DB with SQL_Latin1_General_CP1_CI_AS collation and insert multi language

I have a DB with SQL_Latin1_General_CP1_CI_AS collation and we are trying to import an excel file with multiple language characters. it is not importing any characters and showing NULL. we are using ...
2
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1answer
110 views

Having Sharepoint on a different Collation than the system Databases?

After installing Sharepoint I realized that the collation of all Sharepoint databases is Latin1_General_CI_AS_KS_WS while my server collation is Latin1_General_CI_AS. From official documentation I see ...
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0answers
52 views

Searching/selecting database content and smart quotes

I have a utf8 encoded mysql table where the content has been entered using smart quotes. My client is complaining that when users search the site content, the relevant results don't show up. This is ...
2
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1answer
3k views

How to disable case sensitivity in SQL Server 2012?

I tried to update collation_name in sys.databases. I am trying to change 'SQL_Latin1_General_CP1_CS_AS' to 'SQL_Latin1_General_CP1_CI_AS' in order to disable case sensitivity in table. update d set d....
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1answer
191 views

What collation to use for Ukraine?

We have an accounting program with an SQL Server database and would like to start a Ukrainian version. I am not sure which collation to use: Ukrainian or Cyrillic_General? With a non-technical ...
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0answers
114 views

Firebird 2.5 - difference between starting with and = (equal) string searches

Background I have DB that was created on Windows, FB 2.5.0 (long ago). It was subsequently upgraded, over the years, to 2.5.4. Yesterday I wanted to test it on Ubuntu, which has FB 2.5.2 maintained ...
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2answers
4k views

Latin1_General_BIN performance impact when changing the database default collation

I have set the database collation to Latin1_General_BIN, to make string comparisons case-sensitive. Will this have an impact on performance? Will it have any impact on DML or DDL operations in the ...
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0answers
42 views

Where can I find exact rules of a collation?

Is there any documentation anywhere for the exact sorting/equality rules defined by a collation in Windows (SQL Server), for instance "Finnish_Swedish_CI_AS"? I know about CI/CS, AI/AS etc, but I'm ...
12
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1answer
918 views

Why is my PostgreSQL ORDER BY case-insensitive?

I have Postgres 9.4.4 running on Debian and I get the following ORDER BY behavior: veure_test=# show LC_COLLATE; lc_collate ------------- en_US.UTF-8 (1 row) veure_test=# SELECT ...
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1answer
1k views

Add a new collation to a Postgres database

I have these collations: postgres=# select * from pg_collation; collname | collnamespace | collowner | collencoding | collcollate | collctype ------------+---------------+-----------+------------...
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2answers
662 views

Collation conflict when running dynamic sql FOR XML PATH

I am getting the following error message when running the query below: Cannot resolve the collation conflict between "Latin1_General_CI_AS" and "Latin1_General_BIN" in the equal to operation ...
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1answer
233 views

Mysterious inequality behavior when comparing date strings

Can someone explain this mysterious Postgres behavior? I'm performing the following queries at the psql command line. mydb=> select '20150526' > '2015-05-25'; -[ RECORD 1 ] ?column? | t mydb=&...
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1answer
171 views

Why does MS SQL Server return a result for empty string check when Unicode string is not empty

select * from (select N'ግዜ ' as t) as t2 where t= '' the string 'ግዜ ' matches the above check, why is this?
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1answer
161 views

How is encoding done in SQL database tables for pattern matching?

Are strings in table columns represented as bit patterns or Unicode? Does the database engine bring them into memory in a different representation character set from the disk-persisted ...
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1answer
247 views

Removing per column and table collation and charset

I recently completed a transition of a database from CHARSET=utf8 COLLATE=latin1 to CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci. During the process tables were migrated one at a time by altering their ...
2
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1answer
223 views

Is worth change databases collation from Latin1_General to Modern spanish, migrating to a new server

We are migrating 3 databases tables from Sql Server 2000 to a new sqlserver 2014. I know that for new databases the recommended Collation for spanish is Modern_Spanish. But what is the recommendation ...
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2answers
170 views

Collation by row, not by column

Is it possible in SQL Server to set collation on individual rows in a table (as opposed to by column, database or server)? If not, perhaps does anyone know if this is a planned feature for SQL Server ...
3
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1answer
2k views

How to create Postgres DB with case insensitive collation

I am using the postgres version 9.4.1 64-bit on windows 7 64-bit. I need to create DB with the setting "case sensitive = OFF" but couldn't make this work. I refereed already many question on SO and ...
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1answer
338 views

How to manually set Code Page and Collation for my SSAS Cube?

When I try to Process my SSAS2012 Olap Cube I get a lot of erros like this Errors in the OLAP storage engine: A duplicate attribute key has been found when processing: Table: 'dbo_ART' ,Column: '...
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1answer
163 views

Was using `set datcollate='C'` a mistake?

In a pre-production environment running django 1.6 on PostgreSQL 9.1 we had a problem with database records arriving in a different order from what the application was expecting. So we ran this ...
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1answer
410 views

SQL Server ; working around collation mismatches

Imagine the following scenario: I have two servers which are on two separate private networks. A linked server has been created, and there is a table in server A which has an updated version of the ...
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0answers
104 views

Performance Implications of Explicit Collation Conversions across Linked Servers

I locally host host databases from two vendors on two different SQL instances, but on the same network. These servers frequently communicate with each other (through joins and whatnot), so we have ...
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2answers
117 views

MySQL Duplicate entry for a greek word

I have a column which is unique and when I add Αγάθη and Αγαθή (which are different) it says #1062 - Duplicate entry 'Αγαθή' for key 'word'. My collation is set to utf8_general_ci. Is there any ...