-- 库位归属转移的持久化幂等契约；可在二期托盘库位表建表后重复执行。
SET NAMES utf8mb4;

CREATE TABLE IF NOT EXISTS wh_pallet_location_transfer_operation (
  id BIGINT UNSIGNED NOT NULL COMMENT '调拨幂等操作ID',
  tenant_id BIGINT UNSIGNED NOT NULL COMMENT '仓储公共资源域，固定为0',
  source_service VARCHAR(40) NOT NULL COMMENT '来源服务',
  source_business_id BIGINT UNSIGNED NOT NULL COMMENT '来源入仓单ID',
  target_business_id BIGINT UNSIGNED NOT NULL COMMENT '目标子入仓单ID',
  idempotency_key VARCHAR(128) NOT NULL COMMENT '调用方幂等键',
  request_hash CHAR(64) NOT NULL COMMENT '规范化请求SHA-256摘要',
  operation_status VARCHAR(20) NOT NULL DEFAULT 'PROCESSING' COMMENT 'PROCESSING处理中、COMPLETED已完成',
  response_snapshot JSON NULL COMMENT '完成后的调拨结果快照，用于重复请求重放',
  created_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3) COMMENT '创建时间',
  completed_at DATETIME(3) NULL COMMENT '完成时间',
  PRIMARY KEY (id),
  UNIQUE KEY uk_pallet_location_transfer_idempotency
    (tenant_id, source_service, source_business_id, target_business_id, idempotency_key),
  KEY idx_pallet_location_transfer_source (tenant_id, source_service, source_business_id, operation_status)
) ENGINE=InnoDB COMMENT='库位归属转移的持久化幂等操作记录';