diff --git a/Sql_Solutions/Problem1.sql b/Sql_Solutions/Problem1.sql
new file mode 100644
index 0000000..0a5e476
--- /dev/null
+++ b/Sql_Solutions/Problem1.sql
@@ -0,0 +1,3 @@
+# Write your MySQL query statement below
+select name, population, area from world 
+where area>= 3000000 or population>= 25000000;
\ No newline at end of file
diff --git a/Sql_Solutions/Problem3.sql b/Sql_Solutions/Problem3.sql
new file mode 100644
index 0000000..3b81c07
--- /dev/null
+++ b/Sql_Solutions/Problem3.sql
@@ -0,0 +1,3 @@
+# Write your MySQL query statement below
+DELETE p1 from person p1 JOIN person p2 
+on p1.email=p2. email and p1.id > p2.id;
\ No newline at end of file
diff --git a/Sql_Solutions/problem2.sql b/Sql_Solutions/problem2.sql
new file mode 100644
index 0000000..96048ee
--- /dev/null
+++ b/Sql_Solutions/problem2.sql
@@ -0,0 +1,9 @@
+CREATE FUNCTION getNthHighestSalary(N INT) RETURNS INT
+BEGIN
+  RETURN (
+      # Write your MySQL query statement below.
+    select DISTINCT salary from
+    (select salary, dense_rank() OVER (ORDER BY salary DESC) as Ranking from employee) as ranked_salary
+    WHERE Ranking = N
+  );
+END
\ No newline at end of file