Android 基于其他表中出现次数的差异进行查询

我有三张桌子

table_main:

    +-----+----------+-------------+
    | _id | ENTRY_ID |   DATA      |
    +-----+----------+-------------+
    |   1 | a1       | some data 1 |
    |   2 | a2       | some data 2 |
    |   3 | a3       | some data 3 |
    +-----+----------+-------------+

表2.1.1增补内容：

+----------+-----------+
| ENTRY_ID | TIMESTAMP |
+----------+-----------+
| a1       |    123456 |
| a2       |    123458 |
| a1       |    123654 |
| a1       |    123658 |
| a2       |    123843 |
| a3       |    123911 |
+----------+-----------+

表_删除内容：

+----------+-----------+
| ENTRY_ID | TIMESTAMP |
+----------+-----------+
| a3       |    123556 |
| a2       |    123558 |
| a3       |    123754 |
| a1       |    123858 |
| a3       |    123863 |
| a3       |    123976 |
+----------+-----------+

我在安卓系统工作。我想从表_main中获取所有条目的数据，这些条目包括：

表中发生的事件数量\u增补>表中发生的事件数量 表11删除内容

因此，在上述示例中，输出应为：

+-----+----------+-------------+
| _id | ENTRY_ID |   DATA      |
+-----+----------+-------------+
|   1 | a1       | some data 1 |
|   2 | a2       | some data 2 |
+-----+----------+-------------+

---

这可以通过相关子查询完成：

SELECT *
FROM table_main
WHERE (SELECT COUNT(*)
       FROM table_additions
       WHERE entry_id = table_main.entry_id
      ) >
      (SELECT COUNT(*)
       FROM table_deletions
       WHERE entry_id = table_main.entry_id
      )