36 lines
1.1 KiB
SQL
36 lines
1.1 KiB
SQL
-- 清理不再使用的扩展列（安全重建方式）
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-- 通过重建表来移除列，兼容列已存在或已删除的任意状态
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-- 重建时需要临时关闭外键约束（因为有其他表 REFERENCES albums）
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PRAGMA foreign_keys = OFF;
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DROP INDEX IF EXISTS idx_albums_cleaned;
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-- 重建 albums 表，只保留需要的列
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CREATE TABLE IF NOT EXISTS albums_v2 (
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id TEXT PRIMARY KEY NOT NULL,
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title TEXT NOT NULL DEFAULT '',
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document TEXT DEFAULT '',
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description TEXT,
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cover_image_id TEXT,
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image_count INTEGER NOT NULL DEFAULT 0,
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created_at TEXT NOT NULL DEFAULT (datetime('now', 'localtime'))
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);
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-- 安全复制数据（SELECT 只取确定存在的列，COALESCE 处理 NULL）
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INSERT OR IGNORE INTO albums_v2 (id, title, document, description, cover_image_id, image_count, created_at)
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SELECT id, title,
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COALESCE(document, ''),
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description,
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cover_image_id,
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image_count,
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created_at
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FROM albums;
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-- 替换旧表
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DROP TABLE IF EXISTS albums;
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ALTER TABLE albums_v2 RENAME TO albums;
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-- 恢复外键约束
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PRAGMA foreign_keys = ON;
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