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Add migration: partial unique index on posts.slug

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xfy 2026-06-05 16:19:45 +08:00
parent c7668c679c
commit 488dbc144d
1 changed files with 5 additions and 0 deletions
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migrations/003_slug_partial_unique.sql Normal file
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-- 删除全局唯一约束
ALTER TABLE posts DROP CONSTRAINT IF EXISTS posts_slug_unique;
-- 创建部分唯一索引（仅对未删除记录）
CREATE UNIQUE INDEX idx_posts_slug_unique ON posts(slug) WHERE deleted_at IS NULL;