Which MySQL collation should I use?

It is best to use character set utf8mb4 with the collation utf8mb4_unicode_ci . The character set, utf8 , only supports a small amount of UTF-8 code points, about 6% of possible characters. utf8 only supports the Basic Multilingual Plane (BMP).

What does collate mean in SQL?

Collation is a set of rules that tell database engine how to compare and sort the character data in SQL Server. Collation can be set at different levels in SQL Server.

What is the meaning of collation in database?

In database systems, Collation specifies how data is sorted and compared in a database. Collation provides the sorting rules, case, and accent sensitivity properties for the data in the database. Collation is also used to determine how accents are treated, as well as character width and Japanese kana characters.

What is collation name?

A collation name starts with the name of the character set with which it is associated, generally followed by one or more suffixes indicating other collation characteristics. For example, utf8mb4_0900_ai_ci and latin1_swedish_ci are collations for the utf8mb4 and latin1 character sets, respectively.

What is Cyrillic characters for collation?

The Cyrillic character sets and collations are for use with Belarusian, Bulgarian, Russian, Ukrainian, and Serbian (Cyrillic) languages.

cp1251 (Windows Cyrillic) collations: cp1251_bin.
cp866 (DOS Russian) collations: cp866_bin.
koi8r (KOI8-R Relcom Russian) collations: koi8r_bin.
koi8u (KOI8-U Ukrainian) collations:

What is UTF-8 collation in MySQL?

Overview. The default character set for MySQL at (mt) Media Temple is latin1, with a default collation of latin1_swedish_ci. This is a common type of encoding for Latin characters. You can also change the encoding. utf8 is a common character set for non-Latin characters.

What is collation UTF-8 general CI?

In general, utf8_general_ci is faster than utf8_unicode_ci, but less correct. utf8_unicode_ci also supports contractions and ignorable characters. utf8_general_ci is a legacy collation that does not support expansions, contractions, or ignorable characters. It can make only one-to-one comparisons between characters.

Why collation is used in SQL Server?

Collations in SQL Server provide sorting rules, case, and accent sensitivity properties for your data. Collations that are used with character data types, such as char and varchar, dictate the code page and corresponding characters that can be represented for that data type.

What is a collation issue?

In Microsoft SQL Server, the collation can be set at the column level. When you compare (or concatenate) two columns having different collation in a query, this error occurs: Cannot resolve the collation conflict between “SQL_Latin1_General_CP1_CI_AS” and “French_CI_AS” in the equal to operation.

What is a collation name?

What is collation printing?

WHAT DOES IT MEAN TO COLLATE COPIES? In printing lingo, collate is often used to mean “collate copies.” That means that instead of printing individual papers, the printer “accumulates” these documents together to create a complete set. There, there will be an option to print collated copies.

What is a collation in MySQL?

A MySQL collation is a well-defined set of rules which are used to compare characters of a particular character-set by using their corresponding encoding. Each character set in MySQL might have more than one collation, and has, at least, one default collation. Two character sets cannot have the same collation.

What character set and collation does mymysql use by default?

MySQL will use the database’s character set and collation by default for the tables that you create in the database. A database may contain tables with character sets and collations that are different from the database’s character set and collation.

How do I override the character set and collation for a column?

The CREATE TABLE and ALTER TABLE statement allows you to override the character set and collation for a specific column: The rules for setting the character set and collation are: If you specify both a character set and a collation explicitly, the character set and collation are used.

How to set character-set and collations at the database level?

MySQL query for Setting of character-set and collations at the database level: If you don’t specify the character set at the time of creation then the database uses default character set, but in case you want to assign a specific character set so you can explicitly express it via MySQL query :