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-- source include/have_innodb.inc
-- source include/not_embedded.inc
#
# Bug #68148: drop index on a foreign key column leads to missing table
# MDEV-8845: Table disappear after modifying FK
#
set global innodb_file_per_table=1;
CREATE TABLE ref_table1 (id int(11) NOT NULL, PRIMARY KEY(id)) ENGINE=InnoDB;
CREATE TABLE ref_table2 (id int(11) NOT NULL, PRIMARY KEY(id)) ENGINE=InnoDB;
CREATE TABLE `main` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`ref_id1` int(11) NOT NULL,
`ref_id2` int(11) NOT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `idx_1` (`ref_id1`,`ref_id2`),
KEY `FK_set_out_analysis_route_id` (`ref_id2`),
CONSTRAINT `FK_1` FOREIGN KEY (`ref_id1`) REFERENCES `ref_table1` (`id`) ,
CONSTRAINT `FK_2` FOREIGN KEY (`ref_id2`) REFERENCES `ref_table2` (`id`)
) ENGINE=InnoDB;
SET FOREIGN_KEY_CHECKS=0;
DROP INDEX `idx_1` ON `main`;
SHOW TABLES;
--echo # restart and see if we can still access the main table
--source include/restart_mysqld.inc
# This is required to access the table
SET FOREIGN_KEY_CHECKS=0;
ALTER TABLE `main` ADD INDEX `idx_1` (`ref_id1`);
SHOW CREATE TABLE `main`;
DROP TABLE main, ref_table1, ref_table2;
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