Mysql 在联接时从第二个表中获取最大值行

我有两个表，第一个表保留名称，第二个表在in=cid上与之相关。我只需要从第二个表中获取最高日期行一次。请看下面更清楚的解释：

表1 a

+----+-------+
| id |  name |
+----+-------+
|  1 | name1 |
|  2 | name2 |
|  3 | name3 |
|  4 | name4 |
|  5 | name5 |
+----+-------+

表2 c

+----+-------+------------+
| id | cid   | galiojaiki |
+----+-------+------------+
|  1 |    1  | 2015-04-30 |
|  2 |    1  | 2015-09-30 |
|  3 |    1  | 2015-03-10 |
|  4 |    2  | 2015-06-30 |
|  5 |    2  | 2015-07-30 |
|  6 |    3  | 2015-05-11 |
|  7 |    4  | 2015-05-10 |
+----+-------+------------+

预期结果：

+------------+-------+
| galiojaiki |  name |
+------------+-------+
| 2015-09-30 | name1 |
| 2015-07-30 | name2 |
| 2015-05-11 | name3 |
| 2015-05-11 | name4 |
+------------+-------+

我的问题是：

SELECT a.*, c.galiojaiki FROM `y6fdt_igym_abonementai` AS a 
INNER JOIN 
( 
    SELECT max(galiojaiki) FROM y6fdt_igym_sutartys
) c
on c.cid= a.id
GROUP BY c.abonementas

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如何使用MAX创建一个简单的聚合

差不多

SELECT a.name, 
MAX(b.galiojaiki) as galiojaiki
FROM `y6fdt_igym_abonementai` AS a INNER JOIN
`y6fdt_igym_sutartys` as b  ON a.ID = b.CID
GROUP BY a.name

---

那么cid是a.id？你能把它弄得更混乱些吗？4是10，不是11！？！？！