diff --git a/src/tools/sync_db.py b/src/tools/sync_db.py
index f310c87..1271db5 100644
--- a/src/tools/sync_db.py
+++ b/src/tools/sync_db.py
@@ -210,29 +210,30 @@ def generate_union_table(mysql_conn):
             if w['release_date'] and w['studio_name']:
                 # 对name进行去空格，去特殊字符处理
                 key_str = parse_union_key(w['release_date'], w['studio_name'], w['whisper_code'])
+                if w['release_date'] == '2012-08-31' and w['studio_name'] == 'HEYZO':
+                    print(f"whisper data: {w}")
+                    print(f'key_str: {key_str}')
+                    if key_str in dict_stash_data:
+                        set_idx = dict_stash_data[key_str]
+                        for idx in set_idx:
+                            print(f"stash data: {stash_data[idx]}")
+
                 if key_str in dict_stash_data:
                     set_idx = dict_stash_data[key_str]
-                    if len(set_idx) == 1:
-                        idx = set_idx.pop()
-                        s = stash_data[idx]
-                        stash_data[idx]['matched'] = True
-                        matched = True
-                    else:
-                        # 多重匹配时，把code相同且未匹配过的优先匹配
+                    for idx in set_idx:
+                        if (stash_data[idx]['code'] and w['whisper_code']) and stash_data[idx]['code'].lower() == w['whisper_code'].lower() and not stash_data[idx].get('matched', False):
+                            s = stash_data[idx]
+                            stash_data[idx]['matched'] = True
+                            matched = True
+                            break
+                    if not matched:
+                        # 否则匹配第一个未匹配过的
                         for idx in set_idx:
-                            if (stash_data[idx]['code'] and w['whisper_code']) and stash_data[idx]['code'].lower() == w['whisper_code'].lower() and not stash_data[idx].get('matched', False):
+                            if not stash_data[idx].get('matched', False):
                                 s = stash_data[idx]
                                 stash_data[idx]['matched'] = True
                                 matched = True
                                 break
-                        if not matched:
-                            # 否则匹配第一个未匹配过的
-                            for idx in set_idx:
-                                if not stash_data[idx].get('matched', False):
-                                    s = stash_data[idx]
-                                    stash_data[idx]['matched'] = True
-                                    matched = True
-                                    break
             if matched and s:
                 result.append({
                     'whisper_id': w['Id'],