From 79724488b373f35516cec54bcacaa07ffa3d8c77 Mon Sep 17 00:00:00 2001
From: sudheer11111 <sudheervnarasimha@gmail.com>
Date: Mon, 23 Dec 2024 19:32:25 +0530
Subject: [PATCH 1/2] 'completed'

---
 1st problem.sql |  4 ++++
 2nd problem.sql |  0
 3rd problem.sql |  3 +++
 4th problem.sql | 18 ++++++++++++++++++
 4 files changed, 25 insertions(+)
 create mode 100644 1st problem.sql
 create mode 100644 2nd problem.sql
 create mode 100644 3rd problem.sql
 create mode 100644 4th problem.sql

diff --git a/1st problem.sql b/1st problem.sql
new file mode 100644
index 0000000..a82a841
--- /dev/null
+++ b/1st problem.sql	
@@ -0,0 +1,4 @@
+# Write your MySQL query statement below
+SELECT DISTINCT L1.num  AS ConsecutiveNums FROM Logs L1, 
+Logs L2,Logs L3 WHERE L1.id=L2.id - 1 AND L1.num=L2.num 
+and  L1.id=L3.id-2 and L1.num=L3.num;
\ No newline at end of file
diff --git a/2nd problem.sql b/2nd problem.sql
new file mode 100644
index 0000000..e69de29
diff --git a/3rd problem.sql b/3rd problem.sql
new file mode 100644
index 0000000..b938bd5
--- /dev/null
+++ b/3rd problem.sql	
@@ -0,0 +1,3 @@
+SELECT activity_date as day, count(distinct user_id) as active_users from Activity
+group by activity_date
+having activity_date>="2019-06-28" and activity_date<="2019-07-27";
\ No newline at end of file
diff --git a/4th problem.sql b/4th problem.sql
new file mode 100644
index 0000000..fa5bd9e
--- /dev/null
+++ b/4th problem.sql	
@@ -0,0 +1,18 @@
+CREATE PROCEDURE PivotProducts()
+BEGIN
+	# Write your MySQL query statement below.
+    SET group_concat_max_len = 1000000; 
+    SET @sql = NULL;
+    SELECT
+    GROUP_CONCAT(DISTINCT CONCAT(
+      'SUM(IF(store = "', store, '", price, null)) AS ', store) ORDER BY store ASC)
+    INTO @sql
+    FROM Products;
+
+    SET @sql = CONCAT('SELECT product_id, ', @sql, ' FROM Products GROUP BY product_id');
+    
+
+    PREPARE stmt FROM @sql;
+    EXECUTE stmt;
+    DEALLOCATE PREPARE stmt;
+END
\ No newline at end of file

From b22bd37ddb8799c2923ab89cd417845b15ec73e8 Mon Sep 17 00:00:00 2001
From: sudheer11111 <sudheervnarasimha@gmail.com>
Date: Mon, 23 Dec 2024 19:34:17 +0530
Subject: [PATCH 2/2] 'completed'

---
 2nd problem.sql | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/2nd problem.sql b/2nd problem.sql
index e69de29..0b0872c 100644
--- a/2nd problem.sql	
+++ b/2nd problem.sql	
@@ -0,0 +1,16 @@
+# Write your MySQL query statement below
+WITH t AS
+(
+    SELECT passenger_id, MIN(b.arrival_time) AS arrival_time
+    FROM Passengers p
+    INNER JOIN Buses b
+    ON p.arrival_time <= b.arrival_time
+    GROUP BY passenger_id
+)
+
+SELECT bus_id, COUNT(t.arrival_time) AS passengers_cnt
+FROM Buses b
+LEFT JOIN t
+ON b.arrival_time = t.arrival_time
+GROUP BY bus_id
+ORDER BY bus_id
\ No newline at end of file