# 1445. Apples & Oranges

<https://leetcode.com/problems/apples-oranges>

## Description

Table: `Sales`

```
+---------------+---------+
| Column Name   | Type    |
+---------------+---------+
| sale\_date     | date    |
| fruit         | enum    | 
| sold\_num      | int     | 
+---------------+---------+
(sale\_date,fruit) is the primary key for this table.
This table contains the sales of "apples" and "oranges" sold each day.
```

Write an SQL query to report the difference between number of **apples** and **oranges** sold each day.

Return the result table **ordered** by sale\_date in format ('YYYY-MM-DD').

The query result format is in the following example:

```
Sales table:
+------------+------------+-------------+
| sale\_date  | fruit      | sold\_num    |
+------------+------------+-------------+
| 2020-05-01 | apples     | 10          |
| 2020-05-01 | oranges    | 8           |
| 2020-05-02 | apples     | 15          |
| 2020-05-02 | oranges    | 15          |
| 2020-05-03 | apples     | 20          |
| 2020-05-03 | oranges    | 0           |
| 2020-05-04 | apples     | 15          |
| 2020-05-04 | oranges    | 16          |
+------------+------------+-------------+
Result table:
+------------+--------------+
| sale\_date  | diff         |
+------------+--------------+
| 2020-05-01 | 2            |
| 2020-05-02 | 0            |
| 2020-05-03 | 20           |
| 2020-05-04 | -1           |
+------------+--------------+
Day 2020-05-01, 10 apples and 8 oranges were sold (Difference  10 - 8 = 2).
Day 2020-05-02, 15 apples and 15 oranges were sold (Difference 15 - 15 = 0).
Day 2020-05-03, 20 apples and 0 oranges were sold (Difference 20 - 0 = 20).
Day 2020-05-04, 15 apples and 16 oranges were sold (Difference 15 - 16 = -1).
```

## ac

```java
```


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