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2023-12-09 18:42:21 +08:00
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leetcode/problem/capital-gainloss.html
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@@ -9,24 +9,24 @@
| operation_day | int |
| price | int |
+---------------+---------+
(stock_name, operation_day) is the primary key for this table.
The operation column is an ENUM of type ('Sell', 'Buy')
(stock_name, operation_day) is the primary key (combination of columns with unique values) for this table.
The operation column is an ENUM (category) of type ('Sell', 'Buy')
Each row of this table indicates that the stock which has stock_name had an operation on the day operation_day with the price.
It is guaranteed that each 'Sell' operation for a stock has a corresponding 'Buy' operation in a previous day. It is also guaranteed that each 'Buy' operation for a stock has a corresponding 'Sell' operation in an upcoming day.
</pre>
<p>&nbsp;</p>
<p>Write an SQL query to report the <strong>Capital gain/loss</strong> for each stock.</p>
<p>Write a solution to report the <strong>Capital gain/loss</strong> for each stock.</p>
<p>The <strong>Capital gain/loss</strong> of a stock is the total gain or loss after buying and selling the stock one or many times.</p>
<p>Return the result table in <strong>any order</strong>.</p>
<p>The query result format is in the following example.</p>
<p>The&nbsp;result format is in the following example.</p>
<p>&nbsp;</p>
<p><strong>Example 1:</strong></p>
<p><strong class="example">Example 1:</strong></p>
<pre>
<strong>Input:</strong>