MariaDB [test]> CREATE TABLE t_fed (a VECTOR(1) NOT NULL, VECTOR(a)) ENGINE=FEDERATED CONNECTION = 's/t';

ERROR 1 (HY000): server name: '' doesn't exist!

MariaDB [test]> show warnings;

+---------+------+---------------------------------------------------------------------+

| Level   | Code | Message                                                             |

+---------+------+---------------------------------------------------------------------+

| Error   |    1 | server name: '' doesn't exist!                                      |

| Error   |    1 | Can't create/write to file '' (Errcode: 14 "Bad address")           |

| Warning | 1030 | Got error 1 "Operation not permitted" from storage engine FEDERATED |

+---------+------+---------------------------------------------------------------------+

INSTALL SONAME 'ha_federatedx';

eval create server s foreign data wrapper mysql options (host "127.0.0.1", database "test", user "root", port $MASTER_MYPORT);

CREATE TABLE t1 (a VECTOR(1) NOT NULL, VECTOR(a));

CREATE TABLE t1_fed ENGINE=FEDERATED CONNECTION = 's/t1';

SHOW CREATE TABLE t1_fed;

SELECT * FROM t1_fed ORDER BY VEC_DISTANCE_EUCLIDEAN(a,0x00000000) LIMIT 1;

SHOW WARNINGS;

SELECT * FROM t1_fed ORDER BY VEC_DISTANCE_EUCLIDEAN(a,0x00000000) LIMIT 1;

mysqltest: At line 8: query 'SELECT * FROM t1_fed ORDER BY VEC_DISTANCE_EUCLIDEAN(a,0x00000000) LIMIT 1' failed: <Unknown> (1): server name: '' doesn't exist!

SHOW WARNINGS;

Level	Code	Message

Error	1	server name: '' doesn't exist!

Error	1	Can't create/write to file '' (Errcode: 14 "Bad address")

Error	1034	Index for table 't1_fed' is corrupt; try to repair it