要实现数据汇总，可以使用MySQL的聚合函数和GROUP BY子句来实现列的拼接和数据汇总。下面是一个简单的例子：
假设有一个包含以下列的表格sales：
+----+------------+-------+--------+
| id | product | price | region |
+----+------------+-------+--------+
| 1 | Apple | 10 | North |
| 2 | Banana | 5 | South |
| 3 | Orange | 8 | North |
| 4 | Apple | 12 | South |
| 5 | Banana | 6 | North |
+----+------------+-------+--------+
要实现数据汇总，可以使用以下查询语句：
SELECT product, SUM(price) AS total_price, GROUP_CONCAT(region) AS regions
FROM sales
GROUP BY product;
这将返回按产品进行分组的总价格和所有地区的拼接字符串，结果如下：
+------------+------------+---------+
| product | total_price | regions |
+------------+------------+---------+
| Apple | 22 | North,South |
| Banana | 11 | South,North |
| Orange | 8 | North |
+------------+------------+---------+
通过以上查询，即可实现数据的汇总和列的拼接。