CREATE TABLE t1(f1 INT NOT NULL PRIMARY KEY,
f2 CHAR(2) NOT NULL, FULLTEXT f_idx(f2),
f3 INT as (f1) VIRTUAL, INDEX(f3))ENGINE=InnoDB;
INSERT INTO t1(f1, f2) VALUES(1, "on");
ALTER TABLE t1 DROP INDEX f_idx;
FLUSH TABLE t1 FOR EXPORT;
Warnings:
Warning	1235	This version of MariaDB doesn't yet support 'FLUSH TABLES on a table that had an FTS index, created on a hidden column, the auxiliary tables haven't been dropped as yet. FTS auxiliary tables will not be flushed.'
Warning	1235	This version of MariaDB doesn't yet support 'FLUSH TABLES on a table that had an FTS index, created on a hidden column, the auxiliary tables haven't been dropped as yet. FTS auxiliary tables will not be flushed.'
backup: t1
UNLOCK TABLES;
Warnings:
Warning	1235	This version of MariaDB doesn't yet support 'FLUSH TABLES on a table that had an FTS index, created on a hidden column, the auxiliary tables haven't been dropped as yet. FTS auxiliary tables will not be flushed.'
DROP TABLE t1;
CREATE TABLE t1(f1 INT NOT NULL PRIMARY KEY,
f2 CHAR(2) NOT NULL,
f3 CHAR(2) NOT NULL,
f4 INT AS (f1) VIRTUAL, INDEX(f4))ENGINE=InnoDB;
ALTER TABLE t1 DISCARD TABLESPACE;
restore: t1 .ibd and .cfg files
ALTER TABLE t1 IMPORT TABLESPACE;
ERROR HY000: Schema mismatch (Number of indexes don't match, table has 2 indexes but the tablespace meta-data file has 3 indexes)
DROP TABLE t1;
CREATE TABLE t1(f1 INT NOT NULL PRIMARY KEY,
f2 CHAR(2) NOT NULL,
f3 INT as (f1) VIRTUAL, INDEX(f3))ENGINE=InnoDB;
ALTER TABLE t1 DISCARD TABLESPACE;
restore: t1 .ibd and .cfg files
SET DEBUG_DBUG="+d,ib_import_set_index_root_failure";
ALTER TABLE t1 IMPORT TABLESPACE;
ERROR HY000: Too many active concurrent transactions
SET DEBUG_DBUG="-d,ib_import_set_index_root_failure";
SET DEBUG_DBUG="+d,ib_import_vcol_update_fail";
ALTER TABLE t1 IMPORT TABLESPACE;
ERROR 23000: Can't write; duplicate key in table 't1'
SET DEBUG_DBUG="-d,ib_import_vcol_update_fail";
restore: t1 .ibd and .cfg files
SET DEBUG_DBUG="+d,ib_import_fts_error";
ALTER TABLE t1 IMPORT TABLESPACE;
ERROR 23000: Can't write; duplicate key in table 't1'
SET DEBUG_DBUG="-d,ib_import_fts_error";
unlink: t1.ibd
unlink: t1.cfg
SELECT NAME FROM INFORMATION_SCHEMA.INNODB_SYS_COLUMNS
WHERE table_id IN (SELECT table_id FROM information_schema.innodb_sys_tables where name="test/t1");
NAME
f1
f2
f3
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `f1` int(11) NOT NULL,
  `f2` char(2) NOT NULL,
  `f3` int(11) GENERATED ALWAYS AS (`f1`) VIRTUAL,
  PRIMARY KEY (`f1`),
  KEY `f3` (`f3`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
DROP TABLE t1;
CREATE TABLE t1(f1 INT NOT NULL PRIMARY KEY,
FTS_DOC_ID BIGINT SIGNED NOT NULL,
f2 CHAR(2) NOT NULL,
FULLTEXT f_idx(f2))ENGINE=InnoDB;
INSERT INTO t1 VALUES(1, 1, "on");
ALTER TABLE t1 DROP INDEX f_idx;
FLUSH TABLE t1 FOR EXPORT;
backup: t1
UNLOCK TABLES;
DROP TABLE t1;
CREATE TABLE t1(f1 INT NOT NULL PRIMARY KEY,
f2 CHAR(2) NOT NULL)ENGINE=InnoDB;
ALTER TABLE t1 DISCARD TABLESPACE;
restore: t1 .ibd and .cfg files
ALTER TABLE t1 IMPORT TABLESPACE;
ERROR HY000: Schema mismatch (Column f2 ordinal value mismatch, it's at 1 in the table and 2 in the tablespace meta-data file)
DROP TABLE t1;