ALTER TABLE 表名
CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_bin;
utf8mb4_bin: Compile and store each character of the string as binary data, case-sensitive, and can store binary content.
ALTER TABLE 表名
CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_bin;
utf8mb4_bin: Compile and store each character of the string as binary data, case-sensitive, and can store binary content.