Write an SQL query that returns the studentid and name of students that enrolled

Question

Write an SQL query that returns the studentid and name of students that enrolled in all of the nance courses. A course is considered a nance course if the title of the course contains the string ’Finance’.

Consider the following library database schema and example instance storing book bookid price total_copies 84.66 uction of Algorit Database System Concepts74.99 Stochastic Calulus for Finance 41.02 Stochastic Calculus for Finance II 55.22 course courseid titl structor text DB Organization Advanced DB Organization Math Finance I Math Finance II student faculty enroll studentid courseid studentid name gpa Tom 3.3 John 38 Mary 3.0 Kris 3.6 Alex 3.5 facultyiod James70000 Sarah60000 Jay80000 Rache 70000 Pau85000 book checkout bookid studentid date 2017-08-29 2017-09-02 2017-09-07 Hints: All the attributes that have integer values are of type INT; numbers with decimal point are of type NUMERIC; the attribute date of book checkout relation is of type DATE; others are of type VARCHAR Attributes with black background form the primary key of an relation The attribute instructorid of relation course is a foreign key to relation facuity, and tertbookid is a foreign key to relation book. The attribute studentid of relation enroll is a foreign key to relation student, and courseid is a foreign key to relation course. The attribute bookid of relation book_checkout is a foreign key to relation book, and studentid is a foreign key to relation student.

Explanation / Answer

Answer is as follows:

SELECT studentid,name FROM(SELECT * FROM STUDENT AS st JOIN ENROLL ON AS en ON st.studentid=en.studentid ) As sten JOIN COURSE AS co ON sten.courseid=co.courseid WHERE co.title LIKE '%Finance%';

Explanation:

st is object for student table

en is object for Enroll table

sten is object for joined table of student and enroll

co is object for course table

First table student and enroll are joined with student id, then this joined table again join with course table with course id as common and select studentid and name from obtained table.

Like operator is used to match tha string Finance.

if there is any query please ask in comments...

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