-- 9610 单号命名对齐运单 t_order（幂等）
-- ReferenceNo → ClientNo（客户单号）
-- LogisticsNo 并入 ServiceNo（运单号）后删除 LogisticsNo

SET @db := DATABASE();

-- 1) ReferenceNo → ClientNo
SET @hasRef := (
  SELECT COUNT(*) FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order' AND COLUMN_NAME='ReferenceNo'
);
SET @hasClient := (
  SELECT COUNT(*) FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order' AND COLUMN_NAME='ClientNo'
);
SET @sql := IF(
  @hasRef > 0 AND @hasClient = 0,
  'ALTER TABLE `t_9610_order` CHANGE COLUMN `ReferenceNo` `ClientNo` VARCHAR(48) NOT NULL DEFAULT '''' COMMENT ''客户单号（对齐 t_order.ClientNo / 上游 referenceNo）''',
  'SELECT ''skip ReferenceNo->ClientNo'' AS msg'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- 索引名顺带调整（旧 idx_9610_ref → idx_9610_client_no）
SET @idxRef := (
  SELECT COUNT(*) FROM information_schema.STATISTICS
  WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order' AND INDEX_NAME='idx_9610_ref'
);
SET @idxClient := (
  SELECT COUNT(*) FROM information_schema.STATISTICS
  WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order' AND INDEX_NAME='idx_9610_client_no'
);
SET @sql := IF(
  @idxRef > 0 AND @idxClient = 0,
  'ALTER TABLE `t_9610_order` RENAME INDEX `idx_9610_ref` TO `idx_9610_client_no`',
  'SELECT ''skip rename idx_9610_ref'' AS msg'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @idxClient := (
  SELECT COUNT(*) FROM information_schema.STATISTICS
  WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order' AND INDEX_NAME='idx_9610_client_no'
);
SET @sql := IF(
  @idxClient = 0,
  'ALTER TABLE `t_9610_order` ADD KEY `idx_9610_client_no` (`ClientNo`)',
  'SELECT ''skip add idx_9610_client_no'' AS msg'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- 2) LogisticsNo → 回填 ServiceNo，再删列
SET @hasLog := (
  SELECT COUNT(*) FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order' AND COLUMN_NAME='LogisticsNo'
);
SET @sql := IF(
  @hasLog > 0,
  'UPDATE `t_9610_order` SET `ServiceNo` = NULLIF(TRIM(`LogisticsNo`), '''') WHERE (`ServiceNo` IS NULL OR TRIM(`ServiceNo`) = '''') AND `LogisticsNo` IS NOT NULL AND TRIM(`LogisticsNo`) <> ''''',
  'SELECT ''skip backfill ServiceNo'' AS msg'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @idxLog := (
  SELECT COUNT(*) FROM information_schema.STATISTICS
  WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order' AND INDEX_NAME='idx_9610_logistics'
);
SET @sql := IF(
  @idxLog > 0,
  'ALTER TABLE `t_9610_order` DROP INDEX `idx_9610_logistics`',
  'SELECT ''skip drop idx_9610_logistics'' AS msg'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @hasLog := (
  SELECT COUNT(*) FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order' AND COLUMN_NAME='LogisticsNo'
);
SET @sql := IF(
  @hasLog > 0,
  'ALTER TABLE `t_9610_order` DROP COLUMN `LogisticsNo`',
  'SELECT ''skip drop LogisticsNo'' AS msg'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- ServiceNo 索引（检索）
SET @idxSvc := (
  SELECT COUNT(*) FROM information_schema.STATISTICS
  WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order' AND INDEX_NAME='idx_9610_service_no'
);
SET @sql := IF(
  @idxSvc = 0,
  'ALTER TABLE `t_9610_order` ADD KEY `idx_9610_service_no` (`ServiceNo`)',
  'SELECT ''skip idx_9610_service_no'' AS msg'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- OrderNo 注释对齐：海关下游订单编号（非运单 DownstreamServiceNo）
SET @hasOrderNo := (
  SELECT COUNT(*) FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order' AND COLUMN_NAME='OrderNo'
);
SET @sql := IF(
  @hasOrderNo > 0,
  'ALTER TABLE `t_9610_order` MODIFY COLUMN `OrderNo` VARCHAR(32) NULL COMMENT ''海关下游订单编号（申报回写，非 t_order.DownstreamServiceNo）''',
  'SELECT ''skip OrderNo comment'' AS msg'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- DownstreamRefNo 注释
SET @hasDr := (
  SELECT COUNT(*) FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA=@db AND TABLE_NAME='t_9610_order' AND COLUMN_NAME='DownstreamRefNo'
);
SET @sql := IF(
  @hasDr > 0,
  'ALTER TABLE `t_9610_order` MODIFY COLUMN `DownstreamRefNo` VARCHAR(32) NULL COMMENT ''申报回写的 referenceNo 快照''',
  'SELECT ''skip DownstreamRefNo comment'' AS msg'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;