From 3d2e7a5a0a3426f8777c93b07c83af5dd8220f98 Mon Sep 17 00:00:00 2001
From: Sakshi Asati <sakshiasati51@gmail.com>
Date: Mon, 26 May 2025 13:11:06 -0600
Subject: [PATCH 1/2] Done SQL2

---
 PRoblem4.sql | 40 ++++++++++++++++++++++++++++++++++++++++
 Problem1.sql |  8 ++++++++
 Problem2.sql | 10 ++++++++++
 Problem3.sql |  9 +++++++++
 4 files changed, 67 insertions(+)
 create mode 100644 PRoblem4.sql
 create mode 100644 Problem1.sql
 create mode 100644 Problem2.sql
 create mode 100644 Problem3.sql

diff --git a/PRoblem4.sql b/PRoblem4.sql
new file mode 100644
index 0000000..0e45dae
--- /dev/null
+++ b/PRoblem4.sql
@@ -0,0 +1,40 @@
+SELECT 
+    Department.name AS "Department", 
+    Employee.name AS "Employee", 
+    Employee.salary AS "Salary"
+FROM (
+    SELECT 
+        *, 
+        DENSE_RANK() OVER (
+            PARTITION BY departmentId 
+            ORDER BY salary DESC
+        ) AS salary_rank
+    FROM Employee
+) AS Employee
+LEFT JOIN Department 
+    ON Employee.departmentId = Department.id
+WHERE salary_rank <= 3
+ORDER BY Department.name, Employee.salary DESC, Employee.name;
+
+-- withcte 
+WITH cte AS (
+    SELECT 
+        d.name AS Department, 
+        e.name AS Employee, 
+        e.salary AS Salary,
+        DENSE_RANK() OVER (
+            PARTITION BY e.departmentId 
+            ORDER BY e.salary DESC
+        ) AS salary_rank
+    FROM Employee e 
+    LEFT JOIN Department d 
+        ON e.departmentId = d.id
+)
+SELECT 
+    Department, 
+    Employee, 
+    Salary
+FROM cte 
+WHERE salary_rank <= 3
+ORDER BY Department, Salary DESC;
+
diff --git a/Problem1.sql b/Problem1.sql
new file mode 100644
index 0000000..e7461ed
--- /dev/null
+++ b/Problem1.sql
@@ -0,0 +1,8 @@
+# Write your MySQL query statement below
+-- SELECT s1.score, (select COUNT(DISTINCT s2.score)
+-- FROM scores s2 WHERE s2.score>=s1.score )AS 'rank'
+-- FROM scores s1 ORDER BY s1.score DESC;
+
+SELECT s.score, COUNT(DISTINCT T.score) AS 'rank'
+FROM scores s JOIN scores T ON s.score<=T.score
+GROUP BY s.id ORDER BY S.SCORE DESC;
\ No newline at end of file
diff --git a/Problem2.sql b/Problem2.sql
new file mode 100644
index 0000000..b6bd7e7
--- /dev/null
+++ b/Problem2.sql
@@ -0,0 +1,10 @@
+# Write your MySQL query statement below
+-- SELECT  count(id) from FROM seats;
+-- SELECT MOD(id,2) AS 'mod' from seat;
+-- SELECT  (
+--     CASE
+--         WHEN mod(id,2) !=0 AND id!=cnts THEN id+1
+--         WHEN mod(id,2) !=0 AND id =cnts THEN id
+--         ELSE id-1
+--     END) AS 'id' ,student FROM Seat, (SELECT COUNT(*) as 'cnts' FROM Seat) AS SEAT_COUNTS  ORDER BY ID;
+select s1.id, COALESCE (s2.student, s1.student) AS'student' FROM seat s1 LEFT JOIN seat s2 ON (s1.id +1)^1-1 = s2.id ORDER BY s1.id;
\ No newline at end of file
diff --git a/Problem3.sql b/Problem3.sql
new file mode 100644
index 0000000..629412b
--- /dev/null
+++ b/Problem3.sql
@@ -0,0 +1,9 @@
+# Write your MySQL query statement below
+
+SELECT id, (
+    CASE
+    WHEN p_id is NULL THEN 'Root'
+    When id NOT IN (SELECT DISTINCT p_id FROM tree WHERE p_id IS NOT NULL) AND p_id is NOT NULL THEN 'Leaf'
+    ELSE 'Inner'
+    END
+) AS 'type' FROM tree;
\ No newline at end of file

From 5cfde050abff437a4566d3d27dc68ab5c33da75a Mon Sep 17 00:00:00 2001
From: Sakshi Asati <sakshiasati51@gmail.com>
Date: Mon, 26 May 2025 13:12:52 -0600
Subject: [PATCH 2/2] Done SQL2

---
 PRoblem4.sql | 19 -------------------
 1 file changed, 19 deletions(-)

diff --git a/PRoblem4.sql b/PRoblem4.sql
index 0e45dae..2f65b1a 100644
--- a/PRoblem4.sql
+++ b/PRoblem4.sql
@@ -1,22 +1,3 @@
-SELECT 
-    Department.name AS "Department", 
-    Employee.name AS "Employee", 
-    Employee.salary AS "Salary"
-FROM (
-    SELECT 
-        *, 
-        DENSE_RANK() OVER (
-            PARTITION BY departmentId 
-            ORDER BY salary DESC
-        ) AS salary_rank
-    FROM Employee
-) AS Employee
-LEFT JOIN Department 
-    ON Employee.departmentId = Department.id
-WHERE salary_rank <= 3
-ORDER BY Department.name, Employee.salary DESC, Employee.name;
-
--- withcte 
 WITH cte AS (
     SELECT 
         d.name AS Department,