CREATE TABLE `business_customer` (
  `id` BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
  `customer_id` VARCHAR(32) NOT NULL,
  `business_customer_id` VARCHAR(32) NOT NULL,
  `name` VARCHAR(128) NOT NULL,
  `external_code` VARCHAR(64) NULL,
  `status` VARCHAR(16) NOT NULL DEFAULT 'active',
  `remark` VARCHAR(255) NULL,
  `is_deleted` BOOLEAN NOT NULL DEFAULT false,
  `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
  `updated_at` DATETIME(3) NOT NULL,
  PRIMARY KEY (`id`),
  UNIQUE INDEX `uq_business_customer_tenant_code`(`customer_id`, `business_customer_id`),
  INDEX `idx_business_customer_tenant_status`(`customer_id`, `status`, `is_deleted`),
  CONSTRAINT `business_customer_customer_id_fkey`
    FOREIGN KEY (`customer_id`) REFERENCES `host_customer`(`customer_id`)
    ON DELETE RESTRICT ON UPDATE CASCADE
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

ALTER TABLE `markup_config`
  ADD COLUMN `business_customer_id` VARCHAR(32) NULL AFTER `customer_id`;

ALTER TABLE `quote_record`
  ADD COLUMN `business_customer_id` VARCHAR(32) NULL AFTER `customer_id`;

ALTER TABLE `idempotency_record`
  ADD COLUMN `business_customer_id` VARCHAR(32) NULL AFTER `customer_id`;

ALTER TABLE `quote_query_log`
  ADD COLUMN `business_customer_id` VARCHAR(32) NULL AFTER `customer_id`;

ALTER TABLE `markup_config`
  DROP INDEX `markup_config_customer_id_key`,
  ADD UNIQUE INDEX `uq_markup_tenant_business`(`customer_id`, `business_customer_id`),
  ADD INDEX `idx_markup_tenant_deleted`(`customer_id`, `is_deleted`);

ALTER TABLE `quote_record`
  ADD INDEX `idx_quote_tenant_business_created`(`customer_id`, `business_customer_id`, `created_at`);

ALTER TABLE `idempotency_record`
  ADD INDEX `idx_idem_tenant_business`(`customer_id`, `business_customer_id`);

ALTER TABLE `quote_query_log`
  ADD INDEX `idx_query_log_tenant_business`(`customer_id`, `business_customer_id`, `created_at`);