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6 maj 2015 · UTF-8 is a variable-length encoding. In the case of UTF-8, this means that storing one code point requires one to four bytes. However, MySQL's encoding called "utf8" (alias of "utf8mb3") only stores a maximum of three bytes per code point.
By default, the SHOW COLLATION statement displays all available collations. It takes an optional LIKE or WHERE clause that indicates which collation names to display. For example, to see the collations for the default character set, utf8mb4, use this statement: mysql> SHOW COLLATION WHERE Charset = 'utf8mb4';
1 maj 2024 · The utf8mb3 character set is deprecated and you should expect it to be removed in a future MySQL release. Please use utf8mb4 instead. utf8 is currently an alias for utf8mb3, but it is now deprecated as such, and utf8 is expected subsequently to become a reference to utf8mb4.
The utf8mb4 character set has these characteristics: Supports BMP and supplementary characters. Requires a maximum of four bytes per multibyte character. utf8mb4 contrasts with the utf8mb3 character set, which supports only BMP characters and uses a maximum of three bytes per character:
The utfmb4 character set has these characteristics: Supports BMP and supplementary characters. Requires a maximum of four bytes per multibyte character. utf8mb4 contrasts with the utf8mb3 character set, which supports only BMP characters and uses a maximum of three bytes per character:
28 lip 2018 · If you do not want to read the whole blog the summary is: Use utf8mb4, particularly in MySQL 8.0 with one of the UCA 9.0.0 based collations. Before I reach this conclusion, let’s start out looking at what a character set is. What is a Character Set?
16 lut 2023 · In MySQL, UTF8 can encode up to 3 bytes per character. The maximum character in Unicode however, requires 4 bytes to encode. As a result, UTF8 cannot fully support all Unicode characters. On the other hand, UTF8MB4 is an extension of UTF8 and uses a maximum of 4 bytes per character.
