SHOW FULL COLUMNS FROM table_name
;
ALTER TABLE table_name CHANGE col col VARCHAR(100) CHARACTER SET utf8 COLLATE utf8_general_ci
;
例如:ALTER TABLE menpai CHANGE name name VARCHAR(100) CHARACTER SET utf8 COLLATE utf8_general_ci
;
原文:https://www.cnblogs.com/beyondChan/p/12727213.html