What is the character set
Understand different character set encoding
Tools for understanding the character set used
Database character set selection guide
Garbled data processing skills
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What is the character set
Is a set of symbols and character set encoding rules, you must have a corresponding string of characters
Validation set is a set of encoded symbols and validation rules, comparison rules defined between the collation character string
ASCII characters in different character sets, the required number of bytes is not the same
Comparisons between the characters is multi-byte characters, rather than bytes to compare
Validation set was used to validate the case, are identical and the different accents
Individual validation set is binary, comparing the value corresponding to the character-based
The xxx_bin each character string with binary data, case sensitive.
xxx_general_ci case insensitive, CI is an abbreviation for case insensitive, i.e., case-insensitive.
xxx_general_cs case-sensitive, the abbreviation CS is case sensitive, i.e. case sensitive