新功能(#73): 新增促销系统数据库迁移

Co-authored-by: multica-agent <github@multica.ai>
2026-05-26 22:04:44 -07:00
parent 5ebfe0a981
commit 9b88a1c7ca
2 changed files with 119 additions and 0 deletions
@@ -0,0 +1,41 @@
+-- Purpose: Rollback promo system tables and order promo snapshot columns
+
+SET @column_exists = (
+  SELECT COUNT(*)
+  FROM INFORMATION_SCHEMA.COLUMNS
+  WHERE TABLE_SCHEMA = DATABASE()
+    AND TABLE_NAME = 'order'
+    AND COLUMN_NAME = 'promo_discount'
+);
+
+SET @sql = IF(
+  @column_exists = 1,
+  'ALTER TABLE `order` DROP COLUMN `promo_discount`',
+  'SELECT ''Column promo_discount does not exist in order table'''
+);
+
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
+SET @column_exists = (
+  SELECT COUNT(*)
+  FROM INFORMATION_SCHEMA.COLUMNS
+  WHERE TABLE_SCHEMA = DATABASE()
+    AND TABLE_NAME = 'order'
+    AND COLUMN_NAME = 'promo_rule_id'
+);
+
+SET @sql = IF(
+  @column_exists = 1,
+  'ALTER TABLE `order` DROP COLUMN `promo_rule_id`',
+  'SELECT ''Column promo_rule_id does not exist in order table'''
+);
+
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
+DROP TABLE IF EXISTS `promo_usage`;
+DROP TABLE IF EXISTS `subscribe_promo`;
+DROP TABLE IF EXISTS `promo_rule`;