feat: add solutions to lc problems: No.0178,0181

* No.0178.Rank Scores
* No.0181.Employees Earning More Than Their Managers

Author: yanglbme

solution/0100-0199/0178.Rank Scores/README.md

@@ -90,23 +90,40 @@ DENSE_RANK() OVER (
 
 ```sql
 # Write your MySQL query statement below
-SELECT Score, DENSE_RANK() OVER (ORDER BY Score DESC) 'Rank'
-FROM Scores;
+SELECT
+    Score,
+    DENSE_RANK() OVER (
+        ORDER BY
+            Score DESC
+    ) 'Rank'
+FROM
+    Scores;
 ```
 
 ### **MySQL5**
 
 MySQL 8 开始才提供了 `ROW_NUMBER()`，`RANK()`，`DENSE_RANK()` 等[窗口函数](https://dev.mysql.com/doc/refman/8.0/en/window-function-descriptions.html)，在之前的版本，可以使用变量实现类似的功能：
 
 ```sql
-SELECT Score,
-       CONVERT(rk, SIGNED) `Rank`
-FROM (SELECT Score,
-             IF(@latest = Score, @rank, @rank := @rank + 1) rk,
-             @latest := Score
-      FROM Scores,
-           (SELECT @rank := 0, @latest := NULL) tmp
-      ORDER BY Score DESC) s;
+SELECT
+    Score,
+    CONVERT(rk, SIGNED) `Rank`
+FROM
+    (
+        SELECT
+            Score,
+            IF(@latest = Score, @rank, @rank := @rank + 1) rk,
+            @latest := Score
+        FROM
+            Scores,
+            (
+                SELECT
+                    @rank := 0,
+                    @latest := NULL
+            ) tmp
+        ORDER BY
+            Score DESC
+    ) s;
 ```
 
 <!-- tabs:end -->

solution/0100-0199/0178.Rank Scores/README_EN.md

@@ -79,23 +79,40 @@ Solution:
 
 ```sql
 # Write your MySQL query statement below
-SELECT Score, DENSE_RANK() OVER (ORDER BY Score DESC) 'Rank'
-FROM Scores;
+SELECT
+    Score,
+    DENSE_RANK() OVER (
+        ORDER BY
+            Score DESC
+    ) 'Rank'
+FROM
+    Scores;
 ```
 
 ### **MySQL5**
 
 MySQL only provides [window function](https://dev.mysql.com/doc/refman/8.0/en/window-function-descriptions.html) after version 8. In previous versions, variables can be used to achieve similar functions:
 
 ```sql
-SELECT Score,
-       CONVERT(rk, SIGNED) `Rank`
-FROM (SELECT Score,
-             IF(@latest = Score, @rank, @rank := @rank + 1) rk,
-             @latest := Score
-      FROM Scores,
-           (SELECT @rank := 0, @latest := NULL) tmp
-      ORDER BY Score DESC) s;
+SELECT
+    Score,
+    CONVERT(rk, SIGNED) `Rank`
+FROM
+    (
+        SELECT
+            Score,
+            IF(@latest = Score, @rank, @rank := @rank + 1) rk,
+            @latest := Score
+        FROM
+            Scores,
+            (
+                SELECT
+                    @rank := 0,
+                    @latest := NULL
+            ) tmp
+        ORDER BY
+            Score DESC
+    ) s;
 ```
 
 <!-- tabs:end -->

solution/0100-0199/0178.Rank Scores/Solution.MySQL5.sql

@@ -0,0 +1,9 @@
+# Write your MySQL query statement below
+SELECT
+    Score,
+    DENSE_RANK() OVER (
+        ORDER BY
+            Score DESC
+    ) 'Rank'
+FROM
+    Scores;

solution/0100-0199/0178.Rank Scores/Solution.MySQL8.sql

@@ -70,4 +70,15 @@ where Salary > (
     )
 ```
 
+```sql
+# Write your MySQL query statement below
+select
+    e1.name Employee
+from
+    Employee e1
+    join Employee e2 on e1.managerId = e2.id
+where
+    e1.salary > e2.salary
+```
+
 <!-- tabs:end -->

solution/0100-0199/0178.Rank Scores/Solution.sql

@@ -66,4 +66,15 @@ where Salary > (
     )
 ```
 
+```sql
+# Write your MySQL query statement below
+select
+    e1.name Employee
+from
+    Employee e1
+    join Employee e2 on e1.managerId = e2.id
+where
+    e1.salary > e2.salary
+```
+
 <!-- tabs:end -->