Initial commit: 微信联系人祝福管理系统

dedupe_contacts.py

@@ -0,0 +1,55 @@
+# -*- coding: utf-8 -*-
+"""
+根据 search_name 去重，只保留一条记录
+"""
+import sqlite3
+
+DB_PATH = r"D:\夏骥\微信研究\contacts.db"
+
+
+def main():
+    conn = sqlite3.connect(DB_PATH)
+    cursor = conn.cursor()
+    
+    # 1. 查找重复的 search_name
+    cursor.execute('''
+        SELECT search_name, COUNT(*) as cnt 
+        FROM contacts 
+        WHERE search_name != '' 
+        GROUP BY search_name 
+        HAVING COUNT(*) > 1
+        ORDER BY cnt DESC
+    ''')
+    duplicates = cursor.fetchall()
+    
+    print(f'发现 {len(duplicates)} 个重复的搜索姓名')
+    
+    # 2. 对每个重复的 search_name，只保留 id 最小的一条
+    deleted_count = 0
+    for search_name, cnt in duplicates:
+        # 获取该 search_name 的所有 id
+        cursor.execute('''
+            SELECT id FROM contacts 
+            WHERE search_name = ? 
+            ORDER BY id
+        ''', (search_name,))
+        ids = [row[0] for row in cursor.fetchall()]
+        
+        # 保留第一个，删除其他的
+        keep_id = ids[0]
+        delete_ids = ids[1:]
+        
+        if delete_ids:
+            placeholders = ','.join('?' * len(delete_ids))
+            cursor.execute(f'DELETE FROM contacts WHERE id IN ({placeholders})', delete_ids)
+            deleted_count += len(delete_ids)
+            print(f'  "{search_name}": 保留 id={keep_id}, 删除 {len(delete_ids)} 条')
+    
+    conn.commit()
+    conn.close()
+    
+    print(f'\n共删除 {deleted_count} 条重复记录')
+
+
+if __name__ == '__main__':
+    main()