Merge pull request doocs#282 from LjyYano/master

leetcode 176

Author: yanglbme

solution/0100-0199/0176.Second Highest Salary/README.md

@@ -35,7 +35,8 @@
 ### **SQL**
 
 ```
-
+select (select distinct Salary from Employee order by Salary desc limit 1 offset 1) as 
+SecondHighestSalary;
 ```
 
-<!-- tabs:end -->
+<!-- tabs:end -->

solution/0100-0199/0176.Second Highest Salary/README_EN.md

@@ -56,7 +56,8 @@
 ### **SQL**
 
 ```
-
+select (select distinct Salary from Employee order by Salary desc limit 1 offset 1) as 
+SecondHighestSalary;
 ```
 
-<!-- tabs:end -->
+<!-- tabs:end -->

solution/0100-0199/0176.Second Highest Salary/Solution.sql

@@ -0,0 +1,2 @@
+select (select distinct Salary from Employee order by Salary desc limit 1 offset 1) as 
+SecondHighestSalary;

solution/0100-0199/0177.Nth Highest Salary/README.md

@@ -35,7 +35,14 @@
 ### **SQL**
 
 ```
-
+CREATE FUNCTION getNthHighestSalary(N INT) RETURNS INT
+BEGIN
+  set N = N-1;
+  RETURN (
+      # Write your MySQL query statement below.
+      SELECT (SELECT DISTINCT Salary FROM Employee ORDER BY Salary DESC LIMIT 1 OFFSET N) AS SecondHighestSalary
+  );
+END
 ```
 
-<!-- tabs:end -->
+<!-- tabs:end -->

solution/0100-0199/0177.Nth Highest Salary/README_EN.md

@@ -56,7 +56,14 @@
 ### **SQL**
 
 ```
-
+CREATE FUNCTION getNthHighestSalary(N INT) RETURNS INT
+BEGIN
+  set N = N-1;
+  RETURN (
+      # Write your MySQL query statement below.
+      SELECT (SELECT DISTINCT Salary FROM Employee ORDER BY Salary DESC LIMIT 1 OFFSET N) AS SecondHighestSalary
+  );
+END
 ```
 
-<!-- tabs:end -->
+<!-- tabs:end -->

solution/0100-0199/0177.Nth Highest Salary/Solution.sql

@@ -0,0 +1,8 @@
+CREATE FUNCTION getNthHighestSalary(N INT) RETURNS INT
+BEGIN
+  set N = N-1;
+  RETURN (
+      # Write your MySQL query statement below.
+      SELECT (SELECT DISTINCT Salary FROM Employee ORDER BY Salary DESC LIMIT 1 OFFSET N) AS SecondHighestSalary
+  );
+END

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

@@ -43,7 +43,11 @@
 ### **SQL**
 
 ```
+select
+    Score,
+    (select count(*) from (select distinct Score s from Scores) tmp where s>=Score) Rank
+from Scores order by Rank;
 
 ```
 
-<!-- tabs:end -->
+<!-- tabs:end -->

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

@@ -72,7 +72,11 @@
 ### **SQL**
 
 ```
+select
+    Score,
+    (select count(*) from (select distinct Score s from Scores) tmp where s>=Score) Rank
+from Scores order by Rank;
 
 ```
 
-<!-- tabs:end -->
+<!-- tabs:end -->

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

@@ -0,0 +1,4 @@
+select
+    Score,
+    (select count(*) from (select distinct Score s from Scores) tmp where s>=Score) Rank
+from Scores order by Rank;