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Commit 04924f4

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feat: add sql solution to lc problems: No.1158,1393,1407
- No.1158.Market Analysis I - No.1393.Capital GainLoss - No.1407.Top Travellers
1 parent be3a2aa commit 04924f4

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9 files changed

+102
-29
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9 files changed

+102
-29
lines changed

‎solution/1100-1199/1158.Market Analysis I/README.md‎

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### **SQL**
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```sql
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SELECT user_id AS buyer_id,
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join_date,
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COUNT(order_id) AS orders_in_2019
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FROM users AS u
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LEFT JOIN orders AS o ON u.user_id = o.buyer_id
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AND YEAR(order_date) = 2019
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GROUP BY user_id;
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```
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```sql
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SELECT
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user_id AS buyer_id,
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join_date,
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(
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SELECT
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COUNT(*)
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FROM
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orders AS o
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WHERE
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u.user_id = o.buyer_id AND YEAR(order_date) = 2019
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) AS orders_in_2019
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FROM
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users AS u;
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```
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<!-- tabs:end -->

‎solution/1100-1199/1158.Market Analysis I/README_EN.md‎

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### **SQL**
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```sql
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SELECT user_id AS buyer_id,
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join_date,
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COUNT(order_id) AS orders_in_2019
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FROM users AS u
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LEFT JOIN orders AS o ON u.user_id = o.buyer_id
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AND YEAR(order_date) = 2019
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GROUP BY user_id;
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```
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```sql
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SELECT
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user_id AS buyer_id,
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join_date,
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(
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SELECT
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COUNT(*)
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FROM
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orders AS o
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WHERE
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u.user_id = o.buyer_id AND YEAR(order_date) = 2019
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) AS orders_in_2019
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FROM
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users AS u;
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```
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<!-- tabs:end -->
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SELECT user_id AS buyer_id,
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join_date,
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COUNT(order_id) AS orders_in_2019
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FROM users AS u
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LEFT JOIN orders AS o ON u.user_id = o.buyer_id
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AND YEAR(order_date) = 2019
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GROUP BY user_id;

‎solution/1300-1399/1393.Capital GainLoss/README.md‎

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@@ -72,16 +72,15 @@ Corona Masks 股票在第1天以10美元的价格买入,在第3天以1010美
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### **SQL**
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```sql
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# Write your MySQL query statement below
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SELECT
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stock_name,
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sum(
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CASE WHEN operation = 'Buy' THEN -price ELSE price END
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SELECT stock_name,
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SUM(
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CASE
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WHEN operation = 'Buy' THEN - price
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ELSE price
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END
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) AS capital_gain_loss
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FROM
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Stocks
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GROUP BY
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stock_name;
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FROM Stocks
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GROUP BY stock_name;
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```
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<!-- tabs:end -->

‎solution/1300-1399/1393.Capital GainLoss/README_EN.md‎

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@@ -72,16 +72,15 @@ Corona Masks stock was bought at day 1 for 10$ and was sold at day 3 for 1010$.
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### **SQL**
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```sql
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# Write your MySQL query statement below
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SELECT
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stock_name,
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sum(
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CASE WHEN operation = 'Buy' THEN -price ELSE price END
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SELECT stock_name,
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SUM(
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CASE
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WHEN operation = 'Buy' THEN - price
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ELSE price
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END
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) AS capital_gain_loss
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FROM
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Stocks
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GROUP BY
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stock_name;
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FROM Stocks
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GROUP BY stock_name;
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```
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<!-- tabs:end -->
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@@ -1,10 +1,9 @@
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# Write your MySQL query statement below
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SELECT
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stock_name,
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sum(
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CASE WHEN operation = 'Buy' THEN -price ELSE price END
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SELECT stock_name,
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SUM(
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CASE
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WHEN operation = 'Buy' THEN - price
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ELSE price
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END
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) AS capital_gain_loss
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FROM
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Stocks
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GROUP BY
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stock_name;
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FROM Stocks
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GROUP BY stock_name;

‎solution/1400-1499/1407.Top Travellers/README.md‎

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@@ -97,7 +97,15 @@ Donald 没有任何行程, 他的旅行距离为 0。
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### **SQL**
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```sql
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SELECT name,
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COALESCE(SUM(distance), 0) AS travelled_distance
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FROM Users AS u
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LEFT JOIN Rides AS r ON u.id = r.user_id
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GROUP BY
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name
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ORDER BY
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travelled_distance DESC,
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name;
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```
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<!-- tabs:end -->

‎solution/1400-1499/1407.Top Travellers/README_EN.md‎

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@@ -97,7 +97,15 @@ Donald did not have any rides, the distance traveled by him is 0.
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### **SQL**
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```sql
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SELECT name,
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COALESCE(SUM(distance), 0) AS travelled_distance
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FROM Users AS u
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LEFT JOIN Rides AS r ON u.id = r.user_id
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GROUP BY
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name
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ORDER BY
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travelled_distance DESC,
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name;
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```
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<!-- tabs:end -->
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SELECT name,
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COALESCE(SUM(distance), 0) AS travelled_distance
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FROM Users AS u
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LEFT JOIN Rides AS r ON u.id = r.user_id
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GROUP BY
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name
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ORDER BY
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travelled_distance DESC,
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name;

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