Which utf8 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 is utf8 collation?
UTF-8 is an encoding for the Unicode character set, which supports pretty much every language in the world. I think the only difference comes with sorting your results, different letters might come in a different order in other languages (accents, umlauts, etc.).
What is the default collation for MySQL?
MySQL uses the latin1 as the default character set. Therefore, the default collation is latin1_swedish_ci . You can change these settings at server startup. If you specify one character set at server startup, MySQL will use the default collation of that character set.
What should be the collation in MySQL?
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 is the difference between utf8 and Latin1?
what is the difference between utf8 and latin1? They are different encodings (with some characters mapped to common byte sequences, e.g. the ASCII characters and many accented letters). UTF-8 is one encoding of Unicode with all its codepoints; Latin1 encodes less than 256 characters.
Does MySQL support utf8mb4?
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.
How do I convert MySQL to utf8mb4?
Switching from MySQL’s utf8 to utf8mb4
- Step 1: Create a backup.
- Step 2: Upgrade the MySQL server.
- Step 3: Modify databases, tables, and columns.
- Step 4: Check the maximum length of columns and index keys.
- Step 5: Modify connection, client, and server character sets.
- Step 6: Repair and optimize all tables.
What is the difference between utf8 and latin1?
Does UTF-8 support Latin1?
2 Answers. UTF-8 is prepared for world domination, Latin1 isn’t. If you’re trying to store non-Latin characters like Chinese, Japanese, Hebrew, Russian, etc using Latin1 encoding, then they will end up as mojibake.
What’s the difference between UTF8 general and Unicode collation?
To know the difference between utf8_general_ci and utf8_unicode_ci we need to break down the collation’s name. UTF8 – this is the character set to be used. Computer using different languages reference characters with different ascii/binary references such as latin1. UTF8 is a character set which try to cover all characters in one set.
Which is UTF8 collations is the best in MySQL?
So MySQL has a newer charset called utf8mb4 which actually complies with UTF8 definition. To be able fully support Asian languages you will need to choose utf8mb4. If you care about correct sorting in multiple languages, use utf8mb4_unicode or utf8mb4_unicode_ci instead general.
What are the UTF-8 charsets in MySQL?
When you run SHOW COLLATION in MySQL or MariaDB, you will see a large amount of available character sets and collations such as: utf8_general_ci utf8_general_mysql500_ci utf8_unicode_ci
Where can I set a collation in MySQL?
As you can see above there are several places where you can set collations, each of these collations need to be able to support the data you are sending it.
