SQL - Subquery, SELECT from select - sql

Question

My database query :
CREATE DATABASE [College Assignment]
PRINT 'CREATE DATABASE College Assignment'
GO
USE [College Assignment]
CREATE TABLE Departments
(DEPART nvarchar(255) NOT NULL, D_NAME nvarchar(255), HEAD nvarchar(255),PRIMARY KEY (DEPART));
CREATE TABLE Courses
(COURSE_ID nvarchar(255) NOT NULL,
COURSE_NAME nvarchar(255),
"TYPE" nvarchar(255),
POINTS float,
DEPARTMENT_ID nvarchar(255),
PRIMARY KEY (COURSE_ID),
CONSTRAINT fk_dep
FOREIGN KEY (DEPARTMENT_ID) REFERENCES Departments(DEPART));
CREATE TABLE Students
(STUDENT_ID float NOT NULL,
S_NAME nvarchar(255),
CITY nvarchar(255),
PRIMARY KEY (STUDENT_ID));
CREATE TABLE Grades
(STUDENT_ID float NOT NULL,
COURSE_ID nvarchar(255) NOT NULL,
SEMESTER nvarchar(255),
TERM nvarchar(255),
GRADE smallint,
GRADE_SEM smallint,
PRIMARY KEY (STUDENT_ID, COURSE_ID),
CONSTRAINT fk_student
FOREIGN KEY (STUDENT_ID) REFERENCES Students(STUDENT_ID),
CONSTRAINT fk_course
FOREIGN KEY (COURSE_ID) REFERENCES Courses(COURSE_ID));
INSERT INTO Departments VALUES
('BS','Buisnes','Dr.Eyal'),
('CH','Chemistry','Prof.Doron'),
('CS','Computer Science','Dr.Israel'),
('MT','Mathematics','Prof.Levi');
INSERT INTO Courses VALUES
('B-10','Marketing','CLASS',5,'BS'),
('B-40','Operations Res.','SEMIN',3,'BS'),
('C-200','Programing','LAB',4,'CS'),
('C-300','Pascal','LAB',4,'CS'),
('C-55','Data Base','CLASS',3,'CS'),
('M-100','Linear Algebra','CLASS',3,'MT'),
('M-200','Numeric Analyses','CLASS',3,'MT');
INSERT INTO Students VALUES
(105,'Moshe','Haifa'),
(107,'Eyal','Tel Aviv'),
(110,'Ran','Haifa'),
(200,'David','Tel Aviv'),
(210,'Dan','Tel Aviv'),
(240,'Ayelet','Tel Aviv'),
(245,'Yoel','Haifa'),
(310,'Tova','Jerusalem');
INSERT INTO Grades VALUES
(105,'B-40','WIN1999','B',70,70),
(105,'C-200','AUT1999','A',90,85),
(105,'C-55','SUM1998','A',58,70),
(105,'M-100','SUM1998','B',75,50),
(200,'B-10','AUT1999','A',70,65),
(200,'C-200','AUT1999','B',78,50),
(200,'M-100','SUM1998','B',90,90),
(210,'B-10','WIN1999','A',78,50),
(210,'C-200','AUT1999','A',85,80),
(210,'M-100','AUT1999','A',90,90),
(245,'B-10','AUT1999','A',80,70),
(245,'B-40','WIN1998','A',85,95),
(245,'M-100','AUT1999','A',90,80),
(310,'M-100','SUM1998','A',65,100);
Now what I'm trying to do is to print all course names and student names where their grade multiplied by 1.1 is bigger than semester grade.
Now, I manage to do it by printing the course_id and student_id but then on this result I'm trying to connect between the student_id and their names in order to actually print the student name (s_name) and course name instead (course_id)
this is the current script I have:
SELECT STUDENT_ID,COURSE_ID
FROM Grades
WHERE (Grade*1.1>GRADE_SEM)
so basically all I want is quite the same results as I get but to have
student name (s_name) and course_name instead their id's. (this is the print I get right now

Answer 1

Actually it's simple Join Can do that
SELECT
Students.S_Name, Courses.Course_Name,
Students.Student_ID, Courses.Course_ID
FROM
Grades
INNER JOIN Students on Students.Student_ID = Grades.Student_ID
INNER JOIN Courses on Courses.Course_ID = Grades.Course_ID
WHERE
(Grades.Grade*1.1>Grades.GRADE_SEM)
You can read Join more in here Join Documentation
You can see here for Demo = Demo