setting database charset mysql code example
Example 1: mysql how to change default charset
mysql> SHOW VARIABLES LIKE 'char%'; SHOW VARIABLES LIKE 'collation%';
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| Variable_name | Value |
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| character_set_client | utf8mb4 |
| character_set_connection | utf8mb4 |
| character_set_database | utf8mb4 |
| character_set_filesystem | binary |
| character_set_results | utf8mb4 |
| character_set_server | utf8mb4 |
| character_set_system | utf8 |
| character_sets_dir | /usr/share/mysql/charsets/ |
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8 rows in set (0.00 sec)
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| Variable_name | Value |
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| collation_connection | utf8mb4_general_ci |
| collation_database | utf8mb4_unicode_ci |
| collation_server | utf8mb4_unicode_ci |
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3 rows in set (0.00 sec)
Example 2: database collation mysql
The main difference is sorting accuracy (when comparing characters in the
language) and performance. The only special one is utf8_bin which is for
comparing characters in binary format.
utf8_general_ci is somewhat faster than utf8_unicode_ci, but less accurate
(for sorting). The specific language utf8 encoding (such as utf8_swedish_ci)
contain additional language rules that make them the most accurate to sort for
those languages. Most of the time I use utf8_unicode_ci (I prefer accuracy to
small performance improvements), unless I have a good reason to prefer a
specific language.
You can read more on specific unicode character sets on the MySQL manual -
http: