admin/sql/migrate_t_9610_align_item_fields.sql

-- 9610 商品明细命名对齐 t_order_declaration（幂等）
-- ItemNo→Sku, ItemName→CnName, Gcode→ExHsCode, Price→UnitPrice, Qty→Quantity,
-- TotalAmount→Amount, DeclareUnit→Unit
-- 海关专属保留：Gmodel / Barcode / DestCountry / ItemCurrency / LegalQty / LegalUnit / Freight / SortNo

SET @db := DATABASE();

-- ItemNo → Sku
SET @hasOld := (SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order_item' AND COLUMN_NAME='ItemNo');
SET @hasNew := (SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order_item' AND COLUMN_NAME='Sku');
SET @sql := IF(@hasOld>0 AND @hasNew=0,
  'ALTER TABLE `t_9610_order_item` CHANGE COLUMN `ItemNo` `Sku` VARCHAR(32) NOT NULL DEFAULT '''' COMMENT ''SKU（对齐 t_order_declaration.Sku / 上游 itemNo）''',
  'SELECT ''skip ItemNo->Sku'' AS msg');
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- ItemName → CnName
SET @hasOld := (SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order_item' AND COLUMN_NAME='ItemName');
SET @hasNew := (SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order_item' AND COLUMN_NAME='CnName');
SET @sql := IF(@hasOld>0 AND @hasNew=0,
  'ALTER TABLE `t_9610_order_item` CHANGE COLUMN `ItemName` `CnName` VARCHAR(250) NOT NULL DEFAULT '''' COMMENT ''中文品名（对齐 t_order_declaration.CnName / 上游 itemName）''',
  'SELECT ''skip ItemName->CnName'' AS msg');
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- Gcode → ExHsCode
SET @hasOld := (SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order_item' AND COLUMN_NAME='Gcode');
SET @hasNew := (SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order_item' AND COLUMN_NAME='ExHsCode');
SET @sql := IF(@hasOld>0 AND @hasNew=0,
  'ALTER TABLE `t_9610_order_item` CHANGE COLUMN `Gcode` `ExHsCode` VARCHAR(10) NULL COMMENT ''出口海关编码（对齐 t_order_declaration.ExHsCode / 上游 gcode）''',
  'SELECT ''skip Gcode->ExHsCode'' AS msg');
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- Price → UnitPrice
SET @hasOld := (SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order_item' AND COLUMN_NAME='Price');
SET @hasNew := (SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order_item' AND COLUMN_NAME='UnitPrice');
SET @sql := IF(@hasOld>0 AND @hasNew=0,
  'ALTER TABLE `t_9610_order_item` CHANGE COLUMN `Price` `UnitPrice` DECIMAL(19,5) NOT NULL DEFAULT 0 COMMENT ''单价（对齐 t_order_declaration.UnitPrice）''',
  'SELECT ''skip Price->UnitPrice'' AS msg');
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- TotalAmount → Amount（可能尚未存在 TotalAmount）
SET @hasOld := (SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order_item' AND COLUMN_NAME='TotalAmount');
SET @hasNew := (SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order_item' AND COLUMN_NAME='Amount');
SET @sql := IF(@hasOld>0 AND @hasNew=0,
  'ALTER TABLE `t_9610_order_item` CHANGE COLUMN `TotalAmount` `Amount` DECIMAL(19,5) NULL COMMENT ''总价（对齐 t_order_declaration.Amount / 上游 totalPrice）''',
  'SELECT ''skip TotalAmount->Amount'' AS msg');
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @hasNew := (SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order_item' AND COLUMN_NAME='Amount');
SET @sql := IF(@hasNew=0,
  'ALTER TABLE `t_9610_order_item` ADD COLUMN `Amount` DECIMAL(19,5) NULL COMMENT ''总价（对齐 t_order_declaration.Amount）'' AFTER `UnitPrice`',
  'SELECT ''skip add Amount'' AS msg');
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- Qty → Quantity
SET @hasOld := (SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order_item' AND COLUMN_NAME='Qty');
SET @hasNew := (SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order_item' AND COLUMN_NAME='Quantity');
SET @sql := IF(@hasOld>0 AND @hasNew=0,
  'ALTER TABLE `t_9610_order_item` CHANGE COLUMN `Qty` `Quantity` DECIMAL(19,5) NOT NULL DEFAULT 0 COMMENT ''数量（对齐 t_order_declaration.Quantity，精度保留海关小数）''',
  'SELECT ''skip Qty->Quantity'' AS msg');
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- DeclareUnit → Unit
SET @hasOld := (SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order_item' AND COLUMN_NAME='DeclareUnit');
SET @hasNew := (SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order_item' AND COLUMN_NAME='Unit');
SET @sql := IF(@hasOld>0 AND @hasNew=0,
  'ALTER TABLE `t_9610_order_item` CHANGE COLUMN `DeclareUnit` `Unit` VARCHAR(3) NULL COMMENT ''计量单位（对齐 t_order_declaration.Unit / 上游 unit）''',
  'SELECT ''skip DeclareUnit->Unit'' AS msg');
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @hasNew := (SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order_item' AND COLUMN_NAME='Unit');
SET @sql := IF(@hasNew=0,
  'ALTER TABLE `t_9610_order_item` ADD COLUMN `Unit` VARCHAR(3) NULL COMMENT ''计量单位（对齐 t_order_declaration.Unit）'' AFTER `LegalQty`',
  'SELECT ''skip add Unit'' AS msg');
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- Gmodel 注释：海关申报要素（由运单 Model/Specifications/Attributes/Material 拼接）
SET @has := (SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order_item' AND COLUMN_NAME='Gmodel');
SET @sql := IF(@has>0,
  'ALTER TABLE `t_9610_order_item` MODIFY COLUMN `Gmodel` VARCHAR(255) NULL COMMENT ''申报要素（海关；由运单型号/规格等拼接，上游 gmodel）''',
  'SELECT ''skip Gmodel comment'' AS msg');
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;