20 lines
722 B
SQL
20 lines
722 B
SQL
-- U-02: group_members 增加指向 groups 的外键，避免解散后残留孤儿行。
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-- 本分支基于 C-04 时最大迁移号为 0002，按 TASKS 4.2 取 0003。
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DELETE FROM group_members WHERE group_id NOT IN (SELECT id FROM groups);
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CREATE TABLE group_members_new (
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group_id TEXT NOT NULL REFERENCES groups(id) ON DELETE CASCADE,
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endpoint_id TEXT NOT NULL,
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joined_at INTEGER NOT NULL,
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PRIMARY KEY (group_id, endpoint_id)
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);
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INSERT INTO group_members_new (group_id, endpoint_id, joined_at)
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SELECT group_id, endpoint_id, joined_at FROM group_members;
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DROP TABLE group_members;
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ALTER TABLE group_members_new RENAME TO group_members;
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CREATE INDEX idx_group_members_endpoint ON group_members(endpoint_id);
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