DROP TABLE IF EXISTS t1; CREATE TABLE t1(a VARCHAR(255) CHARACTER SET gbk, FULLTEXT(a)) ENGINE = InnoDB; SET NAMES utf8; DELETE FROM t1 LIMIT 1; SET NAMES latin1; DROP TABLE t1; CREATE TABLE t1(a VARCHAR(2) CHARACTER SET big5 COLLATE big5_chinese_ci, FULLTEXT(a)) ENGINE=; DROP TABLE t1; CREATE TABLE t1 (a SERIAL, t TEXT, FULLTEXT f1(t), FULLTEXT f2(t)) ENGINE=InnoDB; Warnings: Note 1831 Duplicate index `f2`. This is deprecated and will be disallowed in a future release INSERT INTO t1 (a,t) VALUES (1,'1'),(2,'1'); ALTER TABLE t1 ADD COLUMN g TEXT GENERATED ALWAYS AS (t) VIRTUAL; DELETE FROM t1 WHERE a = 1; ALTER TABLE t1 DROP INDEX f1; INSERT INTO t1 (a,t) VALUES (1,'1'); DROP TABLE t1;