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10.3 Specifying Character Sets and Collations
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- 10.3.1 Collation Naming Conventions
- 10.3.2 Server Character Set and Collation
- 10.3.3 Database Character Set and Collation
- 10.3.4 Table Character Set and Collation
- 10.3.5 Column Character Set and Collation
- 10.3.6 Character String Literal Character Set and Collation
- 10.3.7 The National Character Set
- 10.3.8 Character Set Introducers
- 10.3.9 Examples of Character Set and Collation Assignment
- 10.3.10 Compatibility with Other DBMSs
There are default settings for character sets and collations at four levels: server, database, table, and column. The description in the following sections may appear complex, but it has been found in practice that multiple-level defaulting leads to natural and obvious results.
CHARACTER SET is used in clauses that specify a
character set. CHARSET can be used as a synonym
for CHARACTER SET.
Character set issues affect not only data storage, but also
communication between client programs and the MySQL server. If you
want the client program to communicate with the server using a
character set different from the default, you'll need to indicate
which one. For example, to use the utf8mb4
Unicode character set, issue this statement after connecting to
the server:
For more information about character set-related issues in client/server communication, see Section 10.4, “Connection Character Sets and Collations”.
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