root
133 lines
5.8 KiB
SQL
133 lines
5.8 KiB
SQL
-- 保质期提醒小程序 - 数据库初始化脚本
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-- 执行前请确保已创建数据库并选择正确的数据库
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-- ============================================
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-- 1. 物品表 (expiry_items)
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-- ============================================
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CREATE TABLE IF NOT EXISTS expiry_items (
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id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY COMMENT '主键ID',
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user_id BIGINT UNSIGNED NOT NULL COMMENT '用户ID（关联 users 表）',
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mini_program_id BIGINT UNSIGNED NOT NULL COMMENT '小程序ID（关联 mini_programs 表）',
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name VARCHAR(100) NOT NULL COMMENT '物品名称',
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category VARCHAR(20) NOT NULL COMMENT '分类：food/medicine/cosmetic/other',
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production_date DATE DEFAULT NULL COMMENT '生产日期（可选）',
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expiry_date DATE NOT NULL COMMENT '过期日期',
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shelf_life_days INT DEFAULT NULL COMMENT '保质期天数（可选）',
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quantity INT DEFAULT 1 COMMENT '数量',
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location VARCHAR(50) DEFAULT NULL COMMENT '存放位置（可选）',
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remark VARCHAR(255) DEFAULT NULL COMMENT '备注（可选）',
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status VARCHAR(20) DEFAULT 'normal' COMMENT '状态：normal/used/discarded（expiring/expired 由业务动态计算）',
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
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updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
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deleted_at TIMESTAMP NULL DEFAULT NULL COMMENT '软删除时间',
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CONSTRAINT chk_expiry_category CHECK (category IN ('food', 'medicine', 'cosmetic', 'other')),
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CONSTRAINT chk_expiry_quantity CHECK (quantity > 0),
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CONSTRAINT chk_expiry_status CHECK (status IN ('normal', 'used', 'discarded')),
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-- 索引
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INDEX idx_user_expiry (user_id, expiry_date) COMMENT '用户+过期日期索引（最常用查询）',
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INDEX idx_user_category (user_id, category) COMMENT '用户+分类索引',
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INDEX idx_user_status (user_id, status) COMMENT '用户+状态索引',
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INDEX idx_deleted_at (deleted_at) COMMENT '软删除索引'
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='保质期物品表';
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-- ============================================
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-- 2. 用户设置表 (expiry_user_settings)
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-- ============================================
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CREATE TABLE IF NOT EXISTS expiry_user_settings (
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id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY COMMENT '主键ID',
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user_id BIGINT UNSIGNED NOT NULL UNIQUE COMMENT '用户ID（唯一）',
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remind_days JSON DEFAULT (JSON_ARRAY(7,3,1)) COMMENT '提醒天数数组，例如 [7,3,1]',
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
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updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
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-- 索引
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INDEX idx_user_id (user_id) COMMENT '用户ID索引'
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='保质期用户设置表';
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-- ============================================
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-- 3. 插入测试数据（可选）
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-- ============================================
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-- 注意：以下测试数据需要根据实际的 user_id 和 mini_program_id 调整
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-- 示例：假设 user_id=1, mini_program_id=1
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-- INSERT INTO expiry_items (user_id, mini_program_id, name, category, production_date, expiry_date, shelf_life_days, quantity, location, remark) VALUES
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-- (1, 1, '伊利纯牛奶', 'food', '2026-02-01', '2026-03-10', 37, 6, '冰箱', ''),
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-- (1, 1, '感冒灵颗粒', 'medicine', NULL, '2027-12-31', NULL, 1, '药箱', ''),
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-- (1, 1, '雅诗兰黛面霜', 'cosmetic', '2025-06-01', '2028-06-01', 1095, 1, '梳妆台', '');
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-- 插入默认用户设置
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-- INSERT INTO expiry_user_settings (user_id, remind_days) VALUES
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-- (1, '[7,3,1]');
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-- ============================================
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-- 4. 验证表结构
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-- ============================================
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-- 查看表结构
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-- SHOW CREATE TABLE expiry_items;
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-- SHOW CREATE TABLE expiry_user_settings;
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-- 查看索引
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-- SHOW INDEX FROM expiry_items;
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-- SHOW INDEX FROM expiry_user_settings;
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-- ============================================
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-- 5. 常用查询示例
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-- ============================================
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-- 查询用户的所有物品
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-- SELECT * FROM expiry_items WHERE user_id = 1 AND deleted_at IS NULL;
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-- 查询即将过期的物品（7天内）
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-- SELECT * FROM expiry_items
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-- WHERE user_id = 1
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-- AND deleted_at IS NULL
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-- AND expiry_date BETWEEN CURDATE() AND DATE_ADD(CURDATE(), INTERVAL 7 DAY)
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-- ORDER BY expiry_date ASC;
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-- 查询已过期的物品
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-- SELECT * FROM expiry_items
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-- WHERE user_id = 1
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-- AND deleted_at IS NULL
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-- AND expiry_date < CURDATE()
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-- ORDER BY expiry_date DESC;
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-- 统计汇总
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-- SELECT
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-- COUNT(*) as total_items,
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-- SUM(CASE WHEN expiry_date BETWEEN CURDATE() AND DATE_ADD(CURDATE(), INTERVAL 7 DAY) THEN 1 ELSE 0 END) as expiring_soon,
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-- SUM(CASE WHEN expiry_date < CURDATE() THEN 1 ELSE 0 END) as expired,
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-- SUM(CASE WHEN expiry_date > DATE_ADD(CURDATE(), INTERVAL 7 DAY) THEN 1 ELSE 0 END) as normal
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-- FROM expiry_items
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-- WHERE user_id = 1
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-- AND deleted_at IS NULL
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-- AND status NOT IN ('used', 'discarded');
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-- ============================================
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-- 6. 数据清理（谨慎使用）
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-- ============================================
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-- 物理删除已软删除超过30天的记录
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-- DELETE FROM expiry_items
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-- WHERE deleted_at IS NOT NULL
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-- AND deleted_at < DATE_SUB(NOW(), INTERVAL 30 DAY);
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-- 清空测试数据（谨慎使用！）
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-- TRUNCATE TABLE expiry_items;
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-- TRUNCATE TABLE expiry_user_settings;
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-- ============================================
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-- 7. 性能优化建议
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-- ============================================
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-- 定期分析表，优化查询性能
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-- ANALYZE TABLE expiry_items;
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-- ANALYZE TABLE expiry_user_settings;
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-- 查看表状态
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-- SHOW TABLE STATUS LIKE 'expiry_%';
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-- ============================================
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-- 初始化完成
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-- ============================================
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