修复(#85): 修复促销审查反馈问题

Co-authored-by: multica-agent <github@multica.ai>

initialize/migrate/database/02154_promo_system.up.sql

@@ -11,10 +11,63 @@ CREATE TABLE IF NOT EXISTS `promo_rule` (
   `updated_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
   `deleted_at` DATETIME DEFAULT NULL COMMENT '软删除时间',
   PRIMARY KEY (`id`),
-  KEY `idx_enabled_priority` (`enabled`, `priority` DESC),
-  KEY `idx_deleted_at` (`deleted_at`)
+  KEY `idx_enabled_priority_deleted` (`enabled`, `deleted_at`, `priority` DESC)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='促销规则表';
 
+SET @index_exists = (
+  SELECT COUNT(*)
+  FROM INFORMATION_SCHEMA.STATISTICS
+  WHERE TABLE_SCHEMA = DATABASE()
+    AND TABLE_NAME = 'promo_rule'
+    AND INDEX_NAME = 'idx_enabled_priority'
+);
+
+SET @sql = IF(
+  @index_exists = 1,
+  'ALTER TABLE `promo_rule` DROP INDEX `idx_enabled_priority`',
+  'SELECT ''Index idx_enabled_priority does not exist on promo_rule table'''
+);
+
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
+SET @index_exists = (
+  SELECT COUNT(*)
+  FROM INFORMATION_SCHEMA.STATISTICS
+  WHERE TABLE_SCHEMA = DATABASE()
+    AND TABLE_NAME = 'promo_rule'
+    AND INDEX_NAME = 'idx_deleted_at'
+);
+
+SET @sql = IF(
+  @index_exists = 1,
+  'ALTER TABLE `promo_rule` DROP INDEX `idx_deleted_at`',
+  'SELECT ''Index idx_deleted_at does not exist on promo_rule table'''
+);
+
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
+SET @index_exists = (
+  SELECT COUNT(*)
+  FROM INFORMATION_SCHEMA.STATISTICS
+  WHERE TABLE_SCHEMA = DATABASE()
+    AND TABLE_NAME = 'promo_rule'
+    AND INDEX_NAME = 'idx_enabled_priority_deleted'
+);
+
+SET @sql = IF(
+  @index_exists = 0,
+  'ALTER TABLE `promo_rule` ADD KEY `idx_enabled_priority_deleted` (`enabled`, `deleted_at`, `priority` DESC)',
+  'SELECT ''Index idx_enabled_priority_deleted already exists on promo_rule table'''
+);
+
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
 CREATE TABLE IF NOT EXISTS `subscribe_promo` (
   `id` BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
   `subscribe_id` BIGINT UNSIGNED NOT NULL COMMENT '套餐规格 ID',