What is collation latin1_swedish_ci?
latin1_swedish_ci is a single byte character set, unlike utf8_general_ci . Compared to latin1_general_ci it has support for a variety of extra characters used in European languages. So it’s a best choice if you don’t know what language you will be using, if you are constrained to use only single byte character sets.
What is the best collation for MySQL?
If you’re using MySQL 5.7, the default MySQL collation is generally latin1_swedish_ci because MySQL uses latin1 as its default character set. If you’re using MySQL 8.0, the default charset is utf8mb4. If you elect to use UTF-8 as your collation, always use utf8mb4 (specifically utf8mb4_unicode_ci).
What is MySQL collation types?
In MySQL, such collations are case-insensitive and accent-insensitive. utf8mb4_general_ci is an example: ‘a’ , ‘A’ , ‘À’ , and ‘á’ each have different character codes but all have a weight of 0x0041 and compare as equal.
What is default collation in MySQL?
The default MySQL server character set and collation are latin1 and latin1_swedish_ci , but you can specify character sets at the server, database, table, column, and string literal levels.
Is collation important 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 is collate utf8_unicode_ci MySQL?
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. MySQL implements utf8 language-specific collations if the ordering with utf8_unicode_ci does not work well for a language.
What is SQL_Latin1_General_CP1_CI_AS?
The SQL_Latin1_General_CP1_CI_AS collation is a SQL collation and the rules around sorting data for unicode and non-unicode data are different. The Latin1_General_CI_AS collation is a Windows collation and the rules around sorting unicode and non-unicode data are the same.
What is the difference between utf8_general_ci and utf8mb4_general_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.
What is utf8mb4_0900_ai_ci?
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 DB 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. Below are the three levels: SQL Server level. Database level.