mysql字符集修改 Incorrect string value 1366 13919

修改数据库字符集：

ALTER DATABASE db_name DEFAULT CHARACTER SET character_name [COLLATE ...];如：ALTER DATABASE test DEFAULT CHARACTER SET utf8mb4;

把表默认的字符集和所有字符列改为新的字符集：

ALTER TABLE tbl_name CONVERT TO CHARACTER SET character_name [COLLATE ...]如：ALTER TABLE logtest CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8_general_ci;

只是修改表的默认字符集：

ALTER TABLE tbl_name DEFAULT CHARACTER SET character_name [COLLATE...];如：ALTER TABLE logtest DEFAULT CHARACTER SET utf8mb4 COLLATE utf8_general_ci;

修改字段的字符集：

ALTER TABLE tbl_name CHANGE c_name c_name CHARACTER SET character_name [COLLATE ...];如：ALTER TABLE logtest CHANGE title title VARCHAR(100) CHARACTER SET utf8 COLLATE utf8_general_ci;

查看数据库编码：

SHOW CREATE DATABASE db_name;

查看表编码：

SHOW CREATE TABLE tbl_name;

查看字段编码：

SHOW FULL COLUMNS FROM tbl_name;

查看当前数据库编码：

SHOW VARIABLES LIKE 'character_set_%';

修改配置文件：

临时，重启失效

set global character_set_server=utf8mb4;
set global character_set_database=utf8mb4;
set global character_set_client=utf8mb4;
set global character_set_connection=utf8mb4;

修改mysql的my.cnf文件中的字符集，永久，重启生效

default-character-set = utf8mb4
character_set_server = utf8mb4
character-set-client-handshake = FALSE
collation-server = utf8mb4_unicode_ci
init_connect='SET NAMES utf8mb4'

参考 https://cloud.tencent.com/developer/article/1642652