mysql - sumとマージするMySqlテーブル

Question

このような私のtwpテーブル。

+----+--------+   +----------+-------+--------+
| id | fruit  |   | fruit_id | color | amount |
+----+--------+   +----------+-------+--------+

結果:

SELECT
  fruit,amount
FROM
  table1,table2
WHERE fruit_id = id

+--------+--------+
| fruit  | amount |
+--------+--------+
| Apple  |      5 |
| Apple  |      5 |
| Cherry |      2 |
| Cherry |      2 |
+--------+--------+

しかし、私はこの結果が欲しい:

+--------+--------+
| fruit  | amount |
+--------+--------+
| Apple  |     10 |
| Cherry |      4 |
+--------+--------+