mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
synced 2025-01-11 02:58:13 +08:00
77 lines
2.4 KiB
HTML
77 lines
2.4 KiB
HTML
<p>Table: <code>Users</code></p>
|
|
|
|
<pre>
|
|
+--------------+---------+
|
|
| Column Name | Type |
|
|
+--------------+---------+
|
|
| account | int |
|
|
| name | varchar |
|
|
+--------------+---------+
|
|
account is the primary key for this table.
|
|
Each row of this table contains the account number of each user in the bank.
|
|
</pre>
|
|
|
|
<p> </p>
|
|
|
|
<p>Table: <code>Transactions</code></p>
|
|
|
|
<pre>
|
|
+---------------+---------+
|
|
| Column Name | Type |
|
|
+---------------+---------+
|
|
| trans_id | int |
|
|
| account | int |
|
|
| amount | int |
|
|
| transacted_on | date |
|
|
+---------------+---------+
|
|
trans_id is the primary key for this table.
|
|
Each row of this table contains all changes made to all accounts.
|
|
amount is positive if the user received money and negative if they transferred money.
|
|
All accounts start with a balance of 0.
|
|
</pre>
|
|
|
|
<p> </p>
|
|
|
|
<p>Write an SQL query to report the name and balance of users with a balance higher than <code>10000</code>. The balance of an account is equal to the sum of the amounts of all transactions involving that account.</p>
|
|
|
|
<p>Return the result table in <strong>any order</strong>.</p>
|
|
|
|
<p>The query result format is in the following example.</p>
|
|
|
|
<p> </p>
|
|
<p><strong>Example 1:</strong></p>
|
|
|
|
<pre>
|
|
<strong>Input:</strong>
|
|
Users table:
|
|
+------------+--------------+
|
|
| account | name |
|
|
+------------+--------------+
|
|
| 900001 | Alice |
|
|
| 900002 | Bob |
|
|
| 900003 | Charlie |
|
|
+------------+--------------+
|
|
Transactions table:
|
|
+------------+------------+------------+---------------+
|
|
| trans_id | account | amount | transacted_on |
|
|
+------------+------------+------------+---------------+
|
|
| 1 | 900001 | 7000 | 2020-08-01 |
|
|
| 2 | 900001 | 7000 | 2020-09-01 |
|
|
| 3 | 900001 | -3000 | 2020-09-02 |
|
|
| 4 | 900002 | 1000 | 2020-09-12 |
|
|
| 5 | 900003 | 6000 | 2020-08-07 |
|
|
| 6 | 900003 | 6000 | 2020-09-07 |
|
|
| 7 | 900003 | -4000 | 2020-09-11 |
|
|
+------------+------------+------------+---------------+
|
|
<strong>Output:</strong>
|
|
+------------+------------+
|
|
| name | balance |
|
|
+------------+------------+
|
|
| Alice | 11000 |
|
|
+------------+------------+
|
|
<strong>Explanation:</strong>
|
|
Alice's balance is (7000 + 7000 - 3000) = 11000.
|
|
Bob's balance is 1000.
|
|
Charlie's balance is (6000 + 6000 - 4000) = 8000.
|
|
</pre>
|