fix(migration): add_clazz_completed_at 使用 IF NOT EXISTS 便于重复执行

Made-with: Cursor
2026-04-28 00:45:03 +08:00
parent aaa7490a04
commit c310769dd4
1 changed files with 1 additions and 1 deletions
@@ -1,7 +1,7 @@
 -- 业务「已结课」：首次点名落库时间；清空出勤后回到 NULL。与 start_from/end_by 日历态互补。
 ALTER TABLE clazz
-    ADD COLUMN completed_at TIMESTAMP NULL;
+    ADD COLUMN IF NOT EXISTS completed_at TIMESTAMP NULL;
 COMMENT ON COLUMN clazz.completed_at IS
    '首次批量保存出勤且存在有效行时写入；出勤被清空则置 NULL。NULL 表示业务上未结课。';