14 lines
517 B
SQL
14 lines
517 B
SQL
-- 012: 为 user_subscriptions 表添加软删除支持
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-- 任务：fix-medium-data-hygiene 1.1
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-- 添加 deleted_at 字段
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ALTER TABLE user_subscriptions
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ADD COLUMN IF NOT EXISTS deleted_at TIMESTAMPTZ DEFAULT NULL;
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-- 添加 deleted_at 索引以优化软删除查询
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CREATE INDEX IF NOT EXISTS usersubscription_deleted_at
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ON user_subscriptions (deleted_at);
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-- 注释：与其他使用软删除的实体保持一致
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COMMENT ON COLUMN user_subscriptions.deleted_at IS '软删除时间戳，NULL 表示未删除';
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