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小墨
2023-12-09 18:42:21 +08:00
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leetcode-cn/problem (English)/销售分析III(English) [sales-analysis-iii].html
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@@ -8,7 +8,7 @@
| product_name | varchar |
| unit_price | int |
+--------------+---------+
product_id is the primary key of this table.
product_id is the primary key (column with unique values) of this table.
Each row of this table indicates the name and the price of each product.
</pre>
@@ -25,21 +25,21 @@ Each row of this table indicates the name and the price of each product.
| quantity | int |
| price | int |
+-------------+---------+
This table has no primary key, it can have repeated rows.
product_id is a foreign key to the Product table.
This table can have duplicate rows.
product_id is a foreign key (reference column) to the Product table.
Each row of this table contains some information about one sale.
</pre>
<p>&nbsp;</p>
<p>Write an SQL query that reports the <strong>products</strong> that were <strong>only</strong> sold in the spring of <code>2019</code>. That is, between <code>2019-01-01</code> and <code>2019-03-31</code> inclusive.</p>
<p>Write a solution to&nbsp;report&nbsp;the <strong>products</strong> that were <strong>only</strong> sold in the first quarter of <code>2019</code>. That is, between <code>2019-01-01</code> and <code>2019-03-31</code> inclusive.</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 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>