From 7d70c617e1194c5d51e7aff8e83a902d331fc52f Mon Sep 17 00:00:00 2001
From: Hinduja Cheela <hindujacheela@Mac.attlocal.net>
Date: Wed, 21 May 2025 17:52:24 -0500
Subject: [PATCH 1/2] Day 2

---
 Problem 1.sql |  4 ++++
 Problem 2.sql |  9 +++++++++
 Problem 3.sql |  8 ++++++++
 Problem 4.sql | 11 +++++++++++
 4 files changed, 32 insertions(+)
 create mode 100644 Problem 1.sql
 create mode 100644 Problem 2.sql
 create mode 100644 Problem 3.sql
 create mode 100644 Problem 4.sql

diff --git a/Problem 1.sql b/Problem 1.sql
new file mode 100644
index 0000000..20a4960
--- /dev/null
+++ b/Problem 1.sql	
@@ -0,0 +1,4 @@
+# Write your MySQL query statement below
+
+select score,dense_rank() over(order by score desc) as 'rank'
+from scores;
diff --git a/Problem 2.sql b/Problem 2.sql
new file mode 100644
index 0000000..6aad7ec
--- /dev/null
+++ b/Problem 2.sql	
@@ -0,0 +1,9 @@
+# Write your MySQL query statement below
+select 
+case 
+        when id%2 =1  and  id+1 <= (select count(*) from Seat) then id+1
+        when id%2 =0  then id-1 
+        else id
+end as id,student
+from Seat
+order by id asc;
\ No newline at end of file
diff --git a/Problem 3.sql b/Problem 3.sql
new file mode 100644
index 0000000..f7c4b99
--- /dev/null
+++ b/Problem 3.sql	
@@ -0,0 +1,8 @@
+# Write your MySQL query statement below
+select id,
+case
+    when p_id is null then 'Root'
+    when id in (select p_id from tree) then 'Inner'
+    else 'Leaf'
+    end as type
+from tree ;
\ No newline at end of file
diff --git a/Problem 4.sql b/Problem 4.sql
new file mode 100644
index 0000000..4a31b2f
--- /dev/null
+++ b/Problem 4.sql	
@@ -0,0 +1,11 @@
+# Write your MySQL query statement below
+
+
+with cte as (
+select d.name as Department,e.name as Employee,dense_rank() over (partition by d.name order by Salary desc) as dense_sal
+from employee e
+join department d on e.departmentId=d.id
+order by salary desc)
+
+select Department,Employee,dense_sal
+from cte ;

From 75556070704b95561a4f861e776d1f1ef8685f65 Mon Sep 17 00:00:00 2001
From: Hinduja Cheela <hindujacheela@Mac.attlocal.net>
Date: Thu, 22 May 2025 16:43:52 -0500
Subject: [PATCH 2/2] Added Fouth problem

---
 Problem 4.sql | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/Problem 4.sql b/Problem 4.sql
index 4a31b2f..fea45c4 100644
--- a/Problem 4.sql	
+++ b/Problem 4.sql	
@@ -1,11 +1,10 @@
 # Write your MySQL query statement below
 
-
-with cte as (
-select d.name as Department,e.name as Employee,dense_rank() over (partition by d.name order by Salary desc) as dense_sal
-from employee e
-join department d on e.departmentId=d.id
-order by salary desc)
-
-select Department,Employee,dense_sal
-from cte ;
+with cte as(
+    select e.id,e.name as Employee,e.salary as Salary,d.name as Department,dense_rank() over(partition by d.   name order by e.salary desc) as dens_col
+    from employee e
+    join Department d on e.departmentId = d.id)
+    
+    select Department,Employee,Salary
+    from cte
+    where dens_col <=3;
\ No newline at end of file