SET [NAMES|CHARACTER SET]

SET NAMESSET CHARACTER SETSET CHARSET 语句用于修改当前连接的变量 character_set_clientcharacter_set_resultscharacter_set_connection

语法图

SetNamesStmt:

SetNamesStmt

VariableAssignmentList:

VariableAssignmentList

VariableAssignment:

VariableAssignment

CharsetName:

CharsetName

StringName:

StringName

CharsetKw:

CharsetKw

CharsetNameOrDefault:

CharsetNameOrDefault

示例

SHOW VARIABLES LIKE 'character_set%';
+--------------------------+--------------------------------------------------------+ | Variable_name | Value | +--------------------------+--------------------------------------------------------+ | character_sets_dir | /usr/local/mysql-5.6.25-osx10.8-x86_64/share/charsets/ | | character_set_connection | utf8mb4 | | character_set_system | utf8 | | character_set_results | utf8mb4 | | character_set_client | utf8mb4 | | character_set_database | utf8mb4 | | character_set_filesystem | binary | | character_set_server | utf8mb4 | +--------------------------+--------------------------------------------------------+ 8 rows in set (0.01 sec)
SET NAMES utf8;
Query OK, 0 rows affected (0.00 sec)
SHOW VARIABLES LIKE 'character_set%';
+--------------------------+--------------------------------------------------------+ | Variable_name | Value | +--------------------------+--------------------------------------------------------+ | character_sets_dir | /usr/local/mysql-5.6.25-osx10.8-x86_64/share/charsets/ | | character_set_connection | utf8 | | character_set_system | utf8 | | character_set_results | utf8 | | character_set_client | utf8 | | character_set_server | utf8mb4 | | character_set_database | utf8mb4 | | character_set_filesystem | binary | +--------------------------+--------------------------------------------------------+ 8 rows in set (0.00 sec)
SET CHARACTER SET utf8mb4;
Query OK, 0 rows affected (0.00 sec)
SHOW VARIABLES LIKE 'character_set%';
+--------------------------+--------------------------------------------------------+ | Variable_name | Value | +--------------------------+--------------------------------------------------------+ | character_set_connection | utf8mb4 | | character_set_system | utf8 | | character_set_results | utf8mb4 | | character_set_client | utf8mb4 | | character_sets_dir | /usr/local/mysql-5.6.25-osx10.8-x86_64/share/charsets/ | | character_set_database | utf8mb4 | | character_set_filesystem | binary | | character_set_server | utf8mb4 | +--------------------------+--------------------------------------------------------+ 8 rows in set (0.00 sec)

MySQL 兼容性

SET [NAMES|CHARACTER SET] 语句与 MySQL 完全兼容。如发现任何兼容性差异,请尝试 TiDB 支持资源

另请参阅