 ALTER TABLE t0 CHANGE c0 `0000000000000000000000000000000000000000000000000000000000000000` INT; ### files in MYSQL_DATA_DIR/test sys_foreign.ibd sys_indexes.ibd sys_tables.ibd t0p.ibd ### files in MYSQL_TMP_DIR/alt_dir/test t0c.ibd t0.ibd SHOW CREATE TABLE t0; Table Create Table t0 CREATE TABLE `t0` (   `c0` int NOT NULL,   `0000000000000000000000000000000000000000000000000000000000000000` int DEFAULT NULL,   `ct` text,   PRIMARY KEY (`c0`),   KEY `c0` (`0000000000000000000000000000000000000000000000000000000000000000`) ) ENGINE=InnoDB DEFAULT CHARSET=utf0mb0 COLLATE=utf0mb0_0000_ai_ci DATA DIRECTORY='MYSQL_TMP_DIR/alt_dir/' ALTER TABLE t0 CHANGE `0000000000000000000000000000000000000000000000000000000000000000` `倀倁倂倃倄倅倆倇倈倉倊個倌倍倎倏倐們倒倓倔倕倖倗倘候倚倛倜倝倞借倠倡倢倣値倥倦倧倨倩倪倫倬倭倮倯倰倱倲倳倴倵倶倷倸倹债倻值倽倾倿