## partsinquiry 数据库文档

更新日期：2025-09-16（已插入演示数据）

说明：本文件根据远程库 mysql.tonaspace.com 中 `partsinquiry` 的实际结构生成，字段/索引/外键信息以线上为准。

### shops
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT | 店铺/租户ID |
| name | VARCHAR(100) | NOT NULL |  | 店铺名称 |
| status | TINYINT UNSIGNED | NOT NULL | 1 | 状态：1启用 0停用 |
| created_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| updated_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| deleted_at | DATETIME | YES |  |  |

**Indexes**: - PRIMARY KEY: `id` - KEY: `idx_shops_status` (`status`)

### users
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT | 用户ID |
| shop_id | BIGINT UNSIGNED | NOT NULL |  | 所属店铺 |
| phone | VARCHAR(32) | YES |  | 手机号 |
| name | VARCHAR(64) | NOT NULL |  | 姓名 |
| role | VARCHAR(32) | NOT NULL | staff | 角色：owner/staff/finance/... |
| password_hash | VARCHAR(255) | YES |  | 密码哈希（若采用短信登录可为空） |
| status | TINYINT UNSIGNED | NOT NULL | 1 | 状态：1启用 0停用 |
| is_owner | TINYINT(1) | NOT NULL | 0 | 是否店主 |
| created_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| updated_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| deleted_at | DATETIME | YES |  |  |

**Indexes**: - PRIMARY KEY: `id` - KEY: `idx_users_shop` (`shop_id`) - UNIQUE: `ux_users_shop_phone` (`shop_id`,`phone`)
**Foreign Keys**: - `fk_users_shop`: `shop_id` → `shops(id)` ON UPDATE NO ACTION ON DELETE NO ACTION

### user_identities
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| shop_id | BIGINT UNSIGNED | NOT NULL |  |  |
| user_id | BIGINT UNSIGNED | NOT NULL |  |  |
| provider | ENUM('wechat_mp','wechat_app') | NOT NULL |  | 身份提供方：小程序/APP |
| openid | VARCHAR(64) | NOT NULL |  |  |
| unionid | VARCHAR(64) | YES |  |  |
| nickname | VARCHAR(64) | YES |  |  |
| avatar_url | VARCHAR(512) | YES |  |  |
| last_login_at | DATETIME | YES |  |  |
| created_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| updated_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |

**Indexes**: - PRIMARY KEY: `id` - KEY: `idx_identity_shop` (`shop_id`) - KEY: `idx_identity_user` (`user_id`) - UNIQUE: `ux_identity_provider_openid` (`provider`,`openid`) - UNIQUE: `ux_identity_unionid` (`unionid`)
**Foreign Keys**: - `fk_identity_shop`: `shop_id` → `shops(id)` ON UPDATE NO ACTION ON DELETE NO ACTION - `fk_identity_user`: `user_id` → `users(id)` ON UPDATE NO ACTION ON DELETE NO ACTION

### wechat_sessions
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| provider | ENUM('wechat_mp','wechat_app') | NOT NULL |  |  |
| openid | VARCHAR(64) | NOT NULL |  |  |
| session_key | VARCHAR(128) | NOT NULL |  |  |
| expires_at | DATETIME | NOT NULL |  |  |
| created_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |

**Indexes**: - PRIMARY KEY: `id` - KEY: `idx_wechat_session_expires` (`expires_at`) - UNIQUE: `ux_wechat_session` (`provider`,`openid`)

### system_parameters
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| shop_id | BIGINT UNSIGNED | NOT NULL |  |  |
| user_id | BIGINT UNSIGNED | NOT NULL |  | 创建/最后修改人 |
| key | VARCHAR(64) | NOT NULL |  | 参数键 |
| value | JSON | NOT NULL |  | 参数值（JSON） |
| created_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| updated_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |

**Indexes**: - PRIMARY KEY: `id` - KEY: `idx_sysparams_shop` (`shop_id`) - UNIQUE: `ux_sysparams_shop_key` (`shop_id`,`key`)
**Foreign Keys**: - `fk_sysparams_shop`: `shop_id` → `shops(id)` ON UPDATE NO ACTION ON DELETE NO ACTION - `fk_sysparams_user`: `user_id` → `users(id)` ON UPDATE NO ACTION ON DELETE NO ACTION

### product_units
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| shop_id | BIGINT UNSIGNED | NOT NULL |  |  |
| user_id | BIGINT UNSIGNED | NOT NULL |  |  |
| name | VARCHAR(16) | NOT NULL |  |  |
| created_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| updated_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| deleted_at | DATETIME | YES |  |  |

**Indexes**: - PRIMARY KEY: `id` - KEY: `idx_units_shop` (`shop_id`) - UNIQUE: `ux_units_shop_name` (`shop_id`,`name`)
**Foreign Keys**: - `fk_units_shop`: `shop_id` → `shops(id)` ON UPDATE NO ACTION ON DELETE NO ACTION - `fk_units_user`: `user_id` → `users(id)` ON UPDATE NO ACTION ON DELETE NO ACTION

### global_skus
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| name | VARCHAR(120) | NOT NULL |  | SKU名称 |
| brand | VARCHAR(64) | YES |  |  |
| model | VARCHAR(64) | YES |  |  |
| spec | VARCHAR(128) | YES |  |  |
| barcode | VARCHAR(32) | YES |  |  |
| unit_id | BIGINT UNSIGNED | YES |  |  |
| tags | JSON | YES |  |  |
| status | ENUM('published','offline') | NOT NULL | published |  |
| created_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| updated_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| deleted_at | DATETIME | YES |  |  |

**Indexes**: - PRIMARY KEY: `id` - KEY: `idx_global_skus_brand_model` (`brand`,`model`) - UNIQUE: `ux_global_skus_barcode` (`barcode`)
**Foreign Keys**: - `fk_globalsku_unit`: `unit_id` → `product_units(id)` ON UPDATE NO ACTION ON DELETE NO ACTION

### product_categories
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| shop_id | BIGINT UNSIGNED | NOT NULL |  |  |
| user_id | BIGINT UNSIGNED | NOT NULL |  |  |
| name | VARCHAR(64) | NOT NULL |  |  |
| parent_id | BIGINT UNSIGNED | YES |  |  |
| sort_order | INT | NOT NULL | 0 |  |
| created_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| updated_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| deleted_at | DATETIME | YES |  |  |

**Indexes**: - PRIMARY KEY: `id` - KEY: `idx_categories_shop` (`shop_id`) - KEY: `idx_categories_parent` (`parent_id`) - UNIQUE: `ux_categories_shop_name` (`shop_id`,`name`)
**Foreign Keys**: - `fk_categories_shop`: `shop_id` → `shops(id)` ON UPDATE NO ACTION ON DELETE NO ACTION - `fk_categories_user`: `user_id` → `users(id)` ON UPDATE NO ACTION ON DELETE NO ACTION - `fk_categories_parent`: `parent_id` → `product_categories(id)` ON UPDATE NO ACTION ON DELETE NO ACTION

### products
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| shop_id | BIGINT UNSIGNED | NOT NULL |  |  |
| user_id | BIGINT UNSIGNED | NOT NULL |  |  |
| name | VARCHAR(120) | NOT NULL |  | 供全文检索 |
| category_id | BIGINT UNSIGNED | YES |  |  |
| unit_id | BIGINT UNSIGNED | NOT NULL |  |  |
| brand | VARCHAR(64) | YES |  |  |
| model | VARCHAR(64) | YES |  |  |
| spec | VARCHAR(128) | YES |  |  |
| origin | VARCHAR(64) | YES |  |  |
| barcode | VARCHAR(32) | YES |  |  |
| alias | VARCHAR(120) | YES |  |  |
| description | TEXT | YES |  |  |
| global_sku_id | BIGINT UNSIGNED | YES |  |  |
| safe_min | DECIMAL(18,3) | YES |  |  |
| safe_max | DECIMAL(18,3) | YES |  |  |
| search_text | TEXT | YES |  | 供全文检索的聚合字段（名称/品牌/型号/规格/别名） |
| created_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| updated_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| deleted_at | DATETIME | YES |  |  |

**Indexes**: - PRIMARY KEY: `id` - KEY: `idx_products_shop` (`shop_id`) - KEY: `idx_products_category` (`category_id`) - KEY: `idx_products_unit` (`unit_id`) - FULLTEXT: `ft_products_search` (`name`,`brand`,`model`,`spec`,`search_text`) - UNIQUE: `ux_products_shop_barcode` (`shop_id`,`barcode`)
**Foreign Keys**: - `fk_products_shop`: `shop_id` → `shops(id)` - `fk_products_user`: `user_id` → `users(id)` - `fk_products_category`: `category_id` → `product_categories(id)` - `fk_products_unit`: `unit_id` → `product_units(id)` - `fk_products_globalsku`: `global_sku_id` → `global_skus(id)`

### product_aliases
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| shop_id | BIGINT UNSIGNED | NOT NULL |  |  |
| user_id | BIGINT UNSIGNED | NOT NULL |  |  |
| product_id | BIGINT UNSIGNED | NOT NULL |  |  |
| alias | VARCHAR(120) | NOT NULL |  |  |
| created_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| updated_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| deleted_at | DATETIME | YES |  |  |

**Indexes**: - PRIMARY KEY: `id` - KEY: `idx_product_alias_product` (`product_id`) - UNIQUE: `ux_product_alias` (`product_id`,`alias`)
**Foreign Keys**: - `fk_alias_shop`: `shop_id` → `shops(id)` - `fk_alias_user`: `user_id` → `users(id)` - `fk_alias_product`: `product_id` → `products(id)`

### product_images
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| shop_id | BIGINT UNSIGNED | NOT NULL |  |  |
| user_id | BIGINT UNSIGNED | NOT NULL |  |  |
| product_id | BIGINT UNSIGNED | NOT NULL |  |  |
| url | VARCHAR(512) | NOT NULL |  |  |
| hash | VARCHAR(64) | YES |  | 内容哈希（去重） |
| sort_order | INT | NOT NULL | 0 |  |
| created_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |

**Indexes**: - PRIMARY KEY: `id` - KEY: `idx_product_images_product` (`product_id`) - UNIQUE: `ux_product_image_hash` (`product_id`,`hash`)
**Foreign Keys**: - `fk_pimg_shop`: `shop_id` → `shops(id)` - `fk_pimg_user`: `user_id` → `users(id)` - `fk_pimg_product`: `product_id` → `products(id)` ON DELETE CASCADE

### product_prices
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| product_id | BIGINT UNSIGNED | NOT NULL |  |  |
| shop_id | BIGINT UNSIGNED | NOT NULL |  |  |
| user_id | BIGINT UNSIGNED | NOT NULL |  |  |
| purchase_price | DECIMAL(18,2) | NOT NULL | 0.00 |  |
| retail_price | DECIMAL(18,2) | NOT NULL | 0.00 |  |
| wholesale_price | DECIMAL(18,2) | NOT NULL | 0.00 |  |
| big_client_price | DECIMAL(18,2) | NOT NULL | 0.00 |  |
| updated_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |

**Indexes**: - PRIMARY KEY: `product_id` - KEY: `idx_prices_shop` (`shop_id`)
**Foreign Keys**: - `fk_prices_product`: `product_id` → `products(id)` ON DELETE CASCADE - `fk_prices_shop`: `shop_id` → `shops(id)` - `fk_prices_user`: `user_id` → `users(id)`

### inventories
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| product_id | BIGINT UNSIGNED | NOT NULL |  |  |
| shop_id | BIGINT UNSIGNED | NOT NULL |  |  |
| user_id | BIGINT UNSIGNED | NOT NULL |  |  |
| quantity | DECIMAL(18,3) | NOT NULL | 0.000 |  |
| updated_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |

**Indexes**: - PRIMARY KEY: `product_id` - KEY: `idx_inventories_shop` (`shop_id`)
**Foreign Keys**: - `fk_inv_product`: `product_id` → `products(id)` ON DELETE CASCADE - `fk_inv_shop`: `shop_id` → `shops(id)` - `fk_inv_user`: `user_id` → `users(id)`

### customers
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| shop_id | BIGINT UNSIGNED | NOT NULL |  |  |
| user_id | BIGINT UNSIGNED | NOT NULL |  |  |
| name | VARCHAR(120) | NOT NULL |  |  |
| phone | VARCHAR(32) | YES |  | 座机 |
| address | VARCHAR(255) | YES |  | 送货地址 |
| mobile | VARCHAR(32) | YES |  | 手机 |
| level | VARCHAR(32) | YES |  | 客户等级标签 |
| contact_name | VARCHAR(64) | YES |  | 联系人 |
| price_level | ENUM('零售价','批发价','大单报价') | NOT NULL | 零售价 | 默认售价列（中文存储） |
| status | TINYINT UNSIGNED | NOT NULL | 1 |  |
| ar_opening | DECIMAL(18,2) | NOT NULL | 0.00 | 期初应收 |
| remark | VARCHAR(255) | YES |  |  |
| created_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| updated_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| deleted_at | DATETIME | YES |  |  |

**Indexes**: - PRIMARY KEY: `id` - KEY: `idx_customers_shop` (`shop_id`) - KEY: `idx_customers_phone` (`phone`) - KEY: `idx_customers_mobile` (`mobile`)
**Foreign Keys**: - `fk_customers_shop`: `shop_id` → `shops(id)` - `fk_customers_user`: `user_id` → `users(id)`

### suppliers
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| shop_id | BIGINT UNSIGNED | NOT NULL |  |  |
| user_id | BIGINT UNSIGNED | NOT NULL |  |  |
| name | VARCHAR(120) | NOT NULL |  |  |
| contact_name | VARCHAR(64) | YES |  | 联系人 |
| mobile | VARCHAR(32) | YES |  | 手机 |
| phone | VARCHAR(32) | YES |  | 电话 |
| address | VARCHAR(255) | YES |  | 经营地址 |
| status | TINYINT UNSIGNED | NOT NULL | 1 |  |
| ap_opening | DECIMAL(18,2) | NOT NULL | 0.00 | 期初应付 |
| ap_payable | DECIMAL(18,2) | NOT NULL | 0.00 | 当前应付（实时维护） |
| remark | VARCHAR(255) | YES |  |  |
| created_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| updated_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| deleted_at | DATETIME | YES |  |  |

**Indexes**: - PRIMARY KEY: `id` - KEY: `idx_suppliers_shop` (`shop_id`) - KEY: `idx_suppliers_phone` (`phone`) - KEY: `idx_suppliers_mobile` (`mobile`)
**Foreign Keys**: - `fk_suppliers_shop`: `shop_id` → `shops(id)` - `fk_suppliers_user`: `user_id` → `users(id)`

### accounts
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| shop_id | BIGINT UNSIGNED | NOT NULL |  |  |
| user_id | BIGINT UNSIGNED | NOT NULL |  |  |
| name | VARCHAR(64) | NOT NULL |  |  |
| type | ENUM('cash','bank','alipay','wechat','other') | NOT NULL | cash |  |
| bank_name | VARCHAR(64) | YES |  | 银行名称（type=bank 可用） |
| bank_account | VARCHAR(64) | YES |  | 银行账号（type=bank 可用） |
| balance | DECIMAL(18,2) | NOT NULL | 0.00 |  |
| status | TINYINT UNSIGNED | NOT NULL | 1 |  |
| created_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| updated_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| deleted_at | DATETIME | YES |  |  |

**Indexes**: - PRIMARY KEY: `id` - KEY: `idx_accounts_shop` (`shop_id`) - UNIQUE: `ux_accounts_shop_name` (`shop_id`,`name`)
**Foreign Keys**: - `fk_accounts_shop`: `shop_id` → `shops(id)` - `fk_accounts_user`: `user_id` → `users(id)`

### sales_orders
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| shop_id | BIGINT UNSIGNED | NOT NULL |  |  |
| user_id | BIGINT UNSIGNED | NOT NULL |  | 创建人 |
| customer_id | BIGINT UNSIGNED | YES |  |  |
| order_no | VARCHAR(32) | NOT NULL |  |  |
| order_time | DATETIME | NOT NULL |  |  |
| status | ENUM('draft','approved','returned','void') | NOT NULL | draft |  |
| amount | DECIMAL(18,2) | NOT NULL | 0.00 | 应收合计 |
| paid_amount | DECIMAL(18,2) | NOT NULL | 0.00 | 已收合计 |
| remark | VARCHAR(255) | YES |  |  |
| created_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| updated_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| deleted_at | DATETIME | YES |  |  |

**Indexes**: - PRIMARY KEY: `id` - KEY: `idx_sales_shop_time` (`shop_id`,`order_time`) - KEY: `idx_sales_customer` (`customer_id`) - UNIQUE: `ux_sales_order_no` (`shop_id`,`order_no`)
**Foreign Keys**: - `fk_sales_shop`: `shop_id` → `shops(id)` - `fk_sales_user`: `user_id` → `users(id)` - `fk_sales_customer`: `customer_id` → `customers(id)`

### sales_order_items
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| order_id | BIGINT UNSIGNED | NOT NULL |  |  |
| product_id | BIGINT UNSIGNED | NOT NULL |  |  |
| quantity | DECIMAL(18,3) | NOT NULL |  |  |
| unit_price | DECIMAL(18,2) | NOT NULL |  |  |
| discount_rate | DECIMAL(5,2) | NOT NULL | 0.00 | 折扣百分比0-100 |
| amount | DECIMAL(18,2) | NOT NULL |  |  |

**Indexes**: - PRIMARY KEY: `id` - KEY: `idx_soi_order` (`order_id`) - KEY: `idx_soi_product` (`product_id`)
**Foreign Keys**: - `fk_soi_order`: `order_id` → `sales_orders(id)` ON DELETE CASCADE - `fk_soi_product`: `product_id` → `products(id)`

### purchase_orders
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| shop_id | BIGINT UNSIGNED | NOT NULL |  |  |
| user_id | BIGINT UNSIGNED | NOT NULL |  |  |
| supplier_id | BIGINT UNSIGNED | YES |  |  |
| order_no | VARCHAR(32) | NOT NULL |  |  |
| order_time | DATETIME | NOT NULL |  |  |
| status | ENUM('draft','approved','void','returned') | NOT NULL | draft |  |
| amount | DECIMAL(18,2) | NOT NULL | 0.00 | 应付合计 |
| paid_amount | DECIMAL(18,2) | NOT NULL | 0.00 | 已付合计 |
| remark | VARCHAR(255) | YES |  |  |
| created_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| updated_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| deleted_at | DATETIME | YES |  |  |

**Indexes**: - PRIMARY KEY: `id` - KEY: `idx_purchase_shop_time` (`shop_id`,`order_time`) - KEY: `idx_purchase_supplier` (`supplier_id`) - UNIQUE: `ux_purchase_order_no` (`shop_id`,`order_no`)
**Foreign Keys**: - `fk_purchase_shop`: `shop_id` → `shops(id)` - `fk_purchase_user`: `user_id` → `users(id)` - `fk_purchase_supplier`: `supplier_id` → `suppliers(id)`

### purchase_order_items
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| order_id | BIGINT UNSIGNED | NOT NULL |  |  |
| product_id | BIGINT UNSIGNED | NOT NULL |  |  |
| quantity | DECIMAL(18,3) | NOT NULL |  |  |
| unit_price | DECIMAL(18,2) | NOT NULL |  |  |
| amount | DECIMAL(18,2) | NOT NULL |  |  |

**Indexes**: - PRIMARY KEY: `id` - KEY: `idx_poi_order` (`order_id`) - KEY: `idx_poi_product` (`product_id`)
**Foreign Keys**: - `fk_poi_order`: `order_id` → `purchase_orders(id)` ON DELETE CASCADE - `fk_poi_product`: `product_id` → `products(id)`

### payments
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| shop_id | BIGINT UNSIGNED | NOT NULL |  |  |
| user_id | BIGINT UNSIGNED | NOT NULL |  |  |
| biz_type | ENUM('sale','purchase','other') | NOT NULL |  |  |
| biz_id | BIGINT UNSIGNED | YES |  | 业务表ID：sales_orders/purchase_orders/other_transactions |
| account_id | BIGINT UNSIGNED | NOT NULL |  |  |
| direction | ENUM('in','out') | NOT NULL |  | 收款/付款 |
| amount | DECIMAL(18,2) | NOT NULL |  |  |
| pay_time | DATETIME | NOT NULL |  |  |
| remark | VARCHAR(255) | YES |  |  |
| created_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |

**Indexes**: - PRIMARY KEY: `id` - KEY: `idx_payments_shop_time` (`shop_id`,`pay_time`) - KEY: `idx_payments_biz` (`biz_type`,`biz_id`)
**Foreign Keys**: - `fk_payments_shop`: `shop_id` → `shops(id)` - `fk_payments_user`: `user_id` → `users(id)` - `fk_payments_account`: `account_id` → `accounts(id)`

### other_transactions
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| shop_id | BIGINT UNSIGNED | NOT NULL |  |  |
| user_id | BIGINT UNSIGNED | NOT NULL |  |  |
| type | ENUM('income','expense') | NOT NULL |  |  |
| category | VARCHAR(64) | NOT NULL |  |  |
| counterparty_type | VARCHAR(32) | YES |  | customer/supplier/other |
| counterparty_id | BIGINT UNSIGNED | YES |  |  |
| account_id | BIGINT UNSIGNED | NOT NULL |  |  |
| amount | DECIMAL(18,2) | NOT NULL |  |  |
| tx_time | DATETIME | NOT NULL |  |  |
| remark | VARCHAR(255) | YES |  |  |
| created_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| updated_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| deleted_at | DATETIME | YES |  |  |

**Indexes**: - PRIMARY KEY: `id` - KEY: `idx_ot_shop_time` (`shop_id`,`tx_time`) - KEY: `idx_ot_account` (`account_id`)
**Foreign Keys**: - `fk_ot_shop`: `shop_id` → `shops(id)` - `fk_ot_user`: `user_id` → `users(id)` - `fk_ot_account`: `account_id` → `accounts(id)`

### finance_categories
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| shop_id | BIGINT UNSIGNED | NOT NULL |  |  |
| type | ENUM('income','expense') | NOT NULL |  | 分类类型 |
| key | VARCHAR(64) | NOT NULL |  | 分类键（稳定标识） |
| label | VARCHAR(64) | NOT NULL |  | 分类名称（支持中文） |
| sort_order | INT | NOT NULL | 0 | 排序 |
| status | TINYINT UNSIGNED | NOT NULL | 1 | 1启用 0停用 |
| created_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| updated_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |

**Indexes**: - PRIMARY KEY: `id` - UNIQUE: `ux_finance_cat` (`shop_id`,`type`,`key`) - KEY: `idx_finance_cat_shop_type` (`shop_id`,`type`)
**Foreign Keys**: - `fk_finance_cat_shop`: `shop_id` → `shops(id)`

### 触发器
- `trg_products_bi`: BEFORE INSERT ON `products` → 设置 `products.search_text`
- `trg_products_au`: BEFORE UPDATE ON `products` → 维护 `products.search_text`
- `trg_palias_ai`: AFTER INSERT ON `product_aliases` → 重建 `products.search_text`
- `trg_palias_au`: AFTER UPDATE ON `product_aliases` → 重建 `products.search_text`
- `trg_palias_ad`: AFTER DELETE ON `product_aliases` → 重建 `products.search_text`


### notices
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| shop_id | BIGINT UNSIGNED | NOT NULL |  |  |
| user_id | BIGINT UNSIGNED | NOT NULL |  |  |
| title | VARCHAR(120) | NOT NULL |  |  |
| content | VARCHAR(500) | NOT NULL |  |  |
| tag | VARCHAR(32) | YES |  |  |
| is_pinned | TINYINT(1) | NOT NULL | 0 |  |
| starts_at | DATETIME | YES |  |  |
| ends_at | DATETIME | YES |  |  |
| status | ENUM('draft','published','offline') | NOT NULL | published |  |
| created_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| updated_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| deleted_at | DATETIME | YES |  |  |

**Indexes**: - PRIMARY KEY: `id` - KEY: `idx_notices_shop` (`shop_id`,`status`,`is_pinned`,`created_at`) - KEY: `idx_notices_time` (`starts_at`,`ends_at`)
**Foreign Keys**: - `fk_notices_shop`: `shop_id` → `shops(id)` ON UPDATE NO ACTION ON DELETE NO ACTION - `fk_notices_user`: `user_id` → `users(id)` ON UPDATE NO ACTION ON DELETE NO ACTION

### inventory_movements
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| shop_id | BIGINT UNSIGNED | NOT NULL |  |  |
| user_id | BIGINT UNSIGNED | NOT NULL |  |  |
| product_id | BIGINT UNSIGNED | NOT NULL |  |  |
| source_type | VARCHAR(32) | NOT NULL |  | sale/purchase/sale_return/purchase_return/adjust |
| source_id | BIGINT UNSIGNED | YES |  | 关联单据ID |
| qty_delta | DECIMAL(18,3) | NOT NULL |  | 数量增减（正加负减） |
| amount_delta | DECIMAL(18,2) | YES |  | 金额变动（可空） |
| reason | VARCHAR(64) | YES |  |  |
| tx_time | DATETIME | NOT NULL |  |  |
| remark | VARCHAR(255) | YES |  |  |
| created_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |

**Indexes**: - PRIMARY KEY: `id` - KEY: `idx_im_shop_time` (`shop_id`,`tx_time`) - KEY: `idx_im_product` (`product_id`)
**Foreign Keys**: - `fk_im_shop`: `shop_id` → `shops(id)` - `fk_im_user`: `user_id` → `users(id)` - `fk_im_product`: `product_id` → `products(id)`

### 附：演示种子数据（非完整，仅用于联调验证）
- 演示店铺：演示店A（用户 3，全部店长 owner）
- 商品域：基础单位3条、类别2条、全局SKU2条、商品2条（含别名/价格/库存/图片）
- 往来与账户：客户2、供应商2、账户3
- 单据：销售单1（含明细2）与进货单1（含明细2）、收付款各1、其他收支2
- 审核与公告：part_submissions 1、attachments 1、notices 2、新增 wechat 身份与会话各1

### sales_return_orders
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| shop_id | BIGINT UNSIGNED | NOT NULL |  |  |
| user_id | BIGINT UNSIGNED | NOT NULL |  |  |
| customer_id | BIGINT UNSIGNED | YES |  |  |
| order_no | VARCHAR(32) | NOT NULL |  |  |
| order_time | DATETIME | NOT NULL |  |  |
| status | ENUM('approved','void') | NOT NULL | approved |  |
| amount | DECIMAL(18,2) | NOT NULL | 0.00 |  |
| paid_amount | DECIMAL(18,2) | NOT NULL | 0.00 |  |
| remark | VARCHAR(255) | YES |  |  |
| created_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| updated_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| deleted_at | DATETIME | YES |  |  |

**Indexes**: - PRIMARY KEY: `id` - UNIQUE: `ux_sr_order_no` (`shop_id`,`order_no`) - KEY: `idx_sr_shop_time` (`shop_id`,`order_time`)
**Foreign Keys**: - `fk_sr_shop`: `shop_id` → `shops(id)` - `fk_sr_user`: `user_id` → `users(id)` - `fk_sr_customer`: `customer_id` → `customers(id)`

### sales_return_order_items
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| order_id | BIGINT UNSIGNED | NOT NULL |  |  |
| product_id | BIGINT UNSIGNED | NOT NULL |  |  |
| quantity | DECIMAL(18,3) | NOT NULL |  |  |
| unit_price | DECIMAL(18,2) | NOT NULL |  |  |
| discount_rate | DECIMAL(5,2) | NOT NULL | 0.00 |  |
| amount | DECIMAL(18,2) | NOT NULL |  |  |

**Indexes**: - PRIMARY KEY: `id` - KEY: `idx_sroi_order` (`order_id`) - KEY: `idx_sroi_product` (`product_id`)
**Foreign Keys**: - `fk_sroi_order`: `order_id` → `sales_return_orders(id)` ON DELETE CASCADE - `fk_sroi_product`: `product_id` → `products(id)`

### purchase_return_orders
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| shop_id | BIGINT UNSIGNED | NOT NULL |  |  |
| user_id | BIGINT UNSIGNED | NOT NULL |  |  |
| supplier_id | BIGINT UNSIGNED | YES |  |  |
| order_no | VARCHAR(32) | NOT NULL |  |  |
| order_time | DATETIME | NOT NULL |  |  |
| status | ENUM('approved','void') | NOT NULL | approved |  |
| amount | DECIMAL(18,2) | NOT NULL | 0.00 |  |
| paid_amount | DECIMAL(18,2) | NOT NULL | 0.00 |  |
| remark | VARCHAR(255) | YES |  |  |
| created_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| updated_at | TIMESTAMP | NOT NULL | CURRENT_TIMESTAMP |  |
| deleted_at | DATETIME | YES |  |  |

**Indexes**: - PRIMARY KEY: `id` - UNIQUE: `ux_pr_order_no` (`shop_id`,`order_no`) - KEY: `idx_pr_shop_time` (`shop_id`,`order_time`)
**Foreign Keys**: - `fk_pr_shop`: `shop_id` → `shops(id)` - `fk_pr_user`: `user_id` → `users(id)` - `fk_pr_supplier`: `supplier_id` → `suppliers(id)`

### purchase_return_order_items
| Column Name | Data Type | Nullable | Default | Comment |
| ----------- | --------- | -------- | ------- | ------- |
| id | BIGINT UNSIGNED | NOT NULL | AUTO_INCREMENT |  |
| order_id | BIGINT UNSIGNED | NOT NULL |  |  |
| product_id | BIGINT UNSIGNED | NOT NULL |  |  |
| quantity | DECIMAL(18,3) | NOT NULL |  |  |
| unit_price | DECIMAL(18,2) | NOT NULL |  |  |
| amount | DECIMAL(18,2) | NOT NULL |  |  |

**Indexes**: - PRIMARY KEY: `id` - KEY: `idx_proi_order` (`order_id`) - KEY: `idx_proi_product` (`product_id`)
**Foreign Keys**: - `fk_proi_order`: `order_id` → `purchase_return_orders(id)` ON DELETE CASCADE - `fk_proi_product`: `product_id` → `products(id)`