Update 177_Nth_Highest_Salary.sql

OFFSET-FETCH/177_Nth_Highest_Salary.sql

@@ -1,10 +1,13 @@
-CREATE FUNCTION getNthHighestSalary(@N INT) RETURNS INT AS
+-- Function to get the N-th highest salary from the employee table
+CREATE FUNCTION getNthHighestSalary(@N INT) 
+RETURNS INT 
+AS
 BEGIN
     RETURN (
         SELECT DISTINCT salary
         FROM employee
         ORDER BY salary DESC
-        OFFSET @N-1 ROW
-        FETCH FIRST 1 ROW ONLY
+        OFFSET @N - 1 ROWS
+        FETCH NEXT 1 ROW ONLY
     );
-END
+END;