From a210cac00c63341e3dca5138be311eb58a4d8aa6 Mon Sep 17 00:00:00 2001
From: SukeshSrinivas <123338848+SukeshSrinivas@users.noreply.github.com>
Date: Wed, 1 Jan 2025 10:27:55 -0600
Subject: [PATCH 1/4] Done

---
 Problem 1.sql | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 Problem 1.sql

diff --git a/Problem 1.sql b/Problem 1.sql
new file mode 100644
index 0000000..7f309e5
--- /dev/null
+++ b/Problem 1.sql	
@@ -0,0 +1,9 @@
+# Write your MySQL query statement below
+WITH AllCandidates AS (
+    SELECT experience, employee_id,  SUM(salary) OVER (PARTITION BY experience ORDER BY salary, experience ) AS CusumSalary, salary FROM Candidates
+)
+SElECT 'Senior' AS experience, COUNT(employee_id) AS accepted_candidates FROM AllCandidates WHERE CusumSalary <=70000 AND experience ='Senior'
+UNION ALL
+SElECT 'Junior' AS experience, COUNT(employee_id) AS accepted_candidates FROM AllCandidates WHERE experience ='Junior' AND
+CusumSalary<= (SELECT 70000 -IFNULL(MAX(CusumSalary),0) FROM AllCandidates WHERE CusumSalary <=70000 AND experience ='Senior')
+

From 192b21441dd57b006cd7069e3e05947af7696e0b Mon Sep 17 00:00:00 2001
From: SukeshSrinivas <123338848+SukeshSrinivas@users.noreply.github.com>
Date: Wed, 1 Jan 2025 11:12:09 -0600
Subject: [PATCH 2/4] Problem 2 Done

---
 Problem 2 LeagueStats.sql | 51 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 Problem 2 LeagueStats.sql

diff --git a/Problem 2 LeagueStats.sql b/Problem 2 LeagueStats.sql
new file mode 100644
index 0000000..defd17d
--- /dev/null
+++ b/Problem 2 LeagueStats.sql	
@@ -0,0 +1,51 @@
+# Write your MySQL query statement below
+-- Step 1: Calculate points, goals scored, and goal difference for home teams
+WITH HomeTeam AS (
+    SELECT 
+        home_team_id AS team_id,
+        CASE 
+            WHEN home_team_goals > away_team_goals THEN 3 -- 3 points for a win
+            WHEN home_team_goals < away_team_goals THEN 0 -- 0 points for a loss
+            ELSE 1 -- 1 point for a draw
+        END AS points,
+        home_team_goals AS goal_for,
+        away_team_goals AS goal_against,
+        home_team_goals - away_team_goals AS goal_diff
+    FROM Matches
+),
+
+-- Step 2: Calculate the same metrics for away teams
+AwayTeam AS (
+    SELECT 
+        away_team_id AS team_id,
+        CASE 
+            WHEN home_team_goals < away_team_goals THEN 3
+            WHEN home_team_goals > away_team_goals THEN 0
+            ELSE 1
+        END AS points,
+        away_team_goals AS goal_for,
+        home_team_goals AS goal_against,
+        away_team_goals - home_team_goals AS goal_diff
+    FROM Matches
+),
+
+-- Step 3: Combine home and away team results into a single dataset
+FinalUnion AS (
+    SELECT * FROM HomeTeam
+    UNION ALL
+    SELECT * FROM AwayTeam
+)
+
+-- Step 4: Aggregate team statistics and rank teams
+SELECT 
+    t.team_name, 
+    COUNT(FinalUnion.team_id) AS matches_played, -- Total matches played by each team
+    SUM(points) AS points, -- Total points earned by each team
+    SUM(goal_for) AS goal_for, -- Total goals scored
+    SUM(goal_against) AS goal_against, -- Total goals conceded
+    SUM(goal_diff) AS goal_diff -- Total goal difference
+FROM FinalUnion
+LEFT JOIN teams t
+ON FinalUnion.team_id = t.team_id
+GROUP BY t.team_name
+ORDER BY points DESC, goal_diff DESC, t.team_name; -- Rank by points, then goal difference

From ef4c296d18b0bc07efa900fbe0c1f83e601db513 Mon Sep 17 00:00:00 2001
From: SukeshSrinivas <123338848+SukeshSrinivas@users.noreply.github.com>
Date: Wed, 1 Jan 2025 12:44:51 -0600
Subject: [PATCH 3/4] Problem 3 Done

---
 Problem 3SalesPerson.sql | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100644 Problem 3SalesPerson.sql

diff --git a/Problem 3SalesPerson.sql b/Problem 3SalesPerson.sql
new file mode 100644
index 0000000..913084f
--- /dev/null
+++ b/Problem 3SalesPerson.sql	
@@ -0,0 +1,11 @@
+-- Getting sales persons details who is associated with company Red
+WITH CTE AS (
+            SELECT o.order_id, o. sales_id, o.com_id, c.name as Companyname FROM Orders o
+            LEFT JOIN Company c
+            ON o.com_id = c.com_id
+            WHERE c.name = 'RED'
+
+)
+ --  Get sales names who are not associated with Red
+SELECT name FROM SalesPerson 
+WHERE sales_id NOT IN (SELECT sales_id FROM CTE)
\ No newline at end of file

From 3beeca577f9f06101d344458018638b0d182cdb6 Mon Sep 17 00:00:00 2001
From: SukeshSrinivas <123338848+SukeshSrinivas@users.noreply.github.com>
Date: Wed, 1 Jan 2025 19:32:05 -0600
Subject: [PATCH 4/4] Problem 4 done

---
 Problem 4FriendRequests.sql | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 Problem 4FriendRequests.sql

diff --git a/Problem 4FriendRequests.sql b/Problem 4FriendRequests.sql
new file mode 100644
index 0000000..c71cbfc
--- /dev/null
+++ b/Problem 4FriendRequests.sql	
@@ -0,0 +1,12 @@
+WITH UnionOutput AS (
+    SELECT requester_id AS person, accepter_id AS friend FROM RequestAccepted
+    UNION ALL
+    SELECT accepter_id AS person, requester_id AS friend FROM RequestAccepted
+)
+SELECT 
+    person AS id, 
+    COUNT(friend) AS num
+FROM UnionOutput
+GROUP BY person
+ORDER BY num DESC
+LIMIT 1;
\ No newline at end of file