Given two tables Teachers and Courses, which SQL query retrieves the list of teachers along with the names of the courses they are currently teaching?
Question
Given two tables Teachers and Courses, which SQL query retrieves the list of teachers along with the names of the courses they are currently teaching?
Solution
Assuming that there is a common column in both tables that links a teacher to a course they are teaching (let's say it's called 'teacher_id'), you can use the SQL JOIN statement to combine rows from these two tables based on this common column. Here is a step-by-step guide on how to write the SQL query:
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Start with the SELECT statement. This specifies the columns you want to retrieve. In this case, you want the teacher's name and the course's name. Assuming these are stored in columns called 'teacher_name' and 'course_name', your query starts like this:
SELECT Teachers.teacher_name, Courses.course_name -
Next, specify the tables you are retrieving data from. In this case, it's the Teachers and Courses tables. You want to combine these tables based on a common column, so you use the JOIN statement. Assuming the common column is 'teacher_id', your query now looks like this:
SELECT Teachers.teacher_name, Courses.course_name FROM Teachers JOIN Courses ON Teachers.teacher_id = Courses.teacher_id -
If you only want to retrieve the teachers that are currently teaching a course, you would need to add a WHERE clause that specifies this condition. However, without more information about how the database is structured, it's impossible to provide the exact SQL for this step.
So, the final SQL query would look something like this:
SELECT Teachers.teacher_name, Courses.course_name FROM Teachers JOIN Courses ON Teachers.teacher_id = Courses.teacher_id
Please replace 'teacher_name', 'course_name', and 'teacher_id' with the actual column names used in your database.
Similar Questions
Given two tables Teachers and Courses, which SQL query retrieves the list of teachers along with the names of the courses they are currently teaching?SELECT Teachers.teacher_name, Courses.course_name FROM Teachers LEFT JOIN Courses ON Teachers.teacher_id = Courses.teacher_id;SELECT Teachers.teacher_name, Courses.course_name FROM Teachers INNER JOIN Courses ON Teachers.teacher_id = Courses.teacher_id;SELECT Teachers.teacher_name, Courses.course_name FROM Teachers RIGHT JOIN Courses ON Teachers.teacher_id = Courses.teacher_id;SELECT Teachers.teacher_name, Courses.course_name FROM Teachers CROSS JOIN Courses WHERE Teachers.teacher_id = Courses.teacher_id;
You are given the following tables:CourseCourseID Description CreditsCS101 Computer Science I 3CS201 Elementary Data Structures 3ENGL210 Technical Writing 3RegistrationSID CourseID SemID Instructor Grade282712 ENGL210 201701 H. Zacny B+362112 CS101 201701 K. Ross CWhat would the following SQL Select statement produce for output?select course.description, registration.SID,registration.gradefrom registration right join courseon registration.courseID = course.courseIDSelect one:a.Computer Science I 362112 Cb.Computer Science I 362112 CTechnical Writing 28212 B+c.Computer Science I 362112 CElementary Data Structures null nullTechnical Writing 28212 B+d.No results due to syntax errorClear my choiceSkip Quiz navigationQuiz navigationQuestion1Question2Question3Question4Question5Question6Question7Question8Question9Question10Question11Question12Question13Question14Question15Question16Question17Question18Question19Question20Question21Question22Question23Question24Question25Question26Question27Question28Question29Question30Question31Question32Question33Question34Question35Question36Question37Question38Question39Question40Question41Question42Question43Question44Question45Question46This pageQuestion47This pageQuestion48This pageQuestion49This pageQuestion50This page
Right replacement of below given Query is : SELECT Name, CourseId FROM Faculty, Teaches WHERE FacultyID= TeachesID;OptionsSelect CourseId from Faculty join Teaches;Select Name,CourseId from Teaches,Faculty where FacultyId=CourseId;Select Name, CourseId from Faculty natural join Teaches;Select Name, CourseId from Faculty;
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SELECT DISTINCT LastName, FirstNameFROM Instructors i JOIN Courses c ON i.InstructorID = c.InstructorIDORDER BY LastName, FirstName ; Write a SELECT statement (Commented as 5A-2 ) that returns the same result set as this SELECT statement, but don’t use a join. Instead, use a subquery in a WHERE clause that uses the IN
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