What is MySQL UTF-8 collation?
What is MySQL UTF-8 collation?
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.
Which UTF-8 collation should I use?
If you elect to use UTF-8 as your collation, always use utf8mb4 (specifically utf8mb4_unicode_ci). You should not use UTF-8 because MySQL’s UTF-8 is different from proper UTF-8 encoding. This is the case because it doesn’t offer full unicode support which can lead to data loss or security issues.
What is UTF-8 character set in MySQL?
MySQL supports multiple Unicode character sets: utf8mb4 : A UTF-8 encoding of the Unicode character set using one to four bytes per character. utf8mb3 : A UTF-8 encoding of the Unicode character set using one to three bytes per character. utf8 : An alias for utf8mb3 .
What is MySQL database collation?
A collation is a set of rules that defines how to compare and sort character strings. Each collation in MySQL belongs to a single character set. Every character set has at least one collation, and most have two or more collations. A collation orders characters based on weights.
What database 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).
Should I use utf8mb4?
If you need to use MySQL or MariaDB, never use “utf8”. Always use “utf8mb4” when you want UTF-8. Convert your database now to avoid headaches later.
What is the difference between utf8_general_ci and utf8_unicode_ci?
Key differences utf8mb4_unicode_ci is based on the official Unicode rules for universal sorting and comparison, which sorts accurately in a wide range of languages. utf8mb4_general_ci is a simplified set of sorting rules which aims to do as well as it can while taking many short-cuts designed to improve speed.
How do I make mysql handle UTF-8?
14 Answers
- use SET NAMES utf8 before you query/insert into the database.
- use DEFAULT CHARSET=utf8 when creating new tables.
- at this point your MySQL client and server should be in UTF-8 (see my. cnf ). remember any languages you use (such as PHP) must be UTF-8 as well.
What is UTF-8 data?
UTF-8 is a variable-width Unicode encoding that encodes each valid Unicode code point using one to four 8-bit bytes. UTF-8 is the preferred encoding of HTML and related languages and it is by far the most common encoding of data on the World Wide Web.
How do I find my default database collation?
To see the default character set and collation for a given database, use these statements: USE db_name; SELECT @@character_set_database, @@collation_database; Alternatively, to display the values without changing the default database: SELECT DEFAULT_CHARACTER_SET_NAME, DEFAULT_COLLATION_NAME FROM INFORMATION_SCHEMA.
What is table collation?
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 best charset for MySQL?
utf8mb4
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).
