stash/pkg/sqlite/migrations/67_group_relationships.up.sql

14 lines
594 B
SQL

CREATE TABLE `groups_relations` (
`containing_id` integer not null,
`sub_id` integer not null,
`order_index` integer not null,
`description` varchar(255),
primary key (`containing_id`, `sub_id`),
foreign key (`containing_id`) references `groups`(`id`) on delete cascade,
foreign key (`sub_id`) references `groups`(`id`) on delete cascade,
check (`containing_id` != `sub_id`)
);
CREATE INDEX `index_groups_relations_sub_id` ON `groups_relations` (`sub_id`);
CREATE UNIQUE INDEX `index_groups_relations_order_index_unique` ON `groups_relations` (`containing_id`, `order_index`);