bacs 287 structured query language 2. bacs 485 sql practice problems assume that a database named...
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BACS 287
Structured Query Language 2
BACS 485
SQL Practice Problems Assume that a database named
COLLEGE exists. It contains the tables defined below.
STUDENT(SSN, Lname, Fname, Class, BDate, Major, GPA)
TEACHER(FacNum, Name, Dept, Title, Salary)
CLASS(ClassNum, ClassName, Time, Credits, FacNum)
ENROLL(ClassNum,SSN, Grade)
BACS 485
E/R DiagramSTUDENT
ENROLL
CLASS
TEACHES
TEACHER
BACS 485
SQL Practice 1 Write a valid SQL query to retrieve
and display the last name, major, and GPA of all students.
BACS 485
SQL Answer 1 Write a valid SQL query to retrieve
and display the last name, major, and GPA of all students.
SELECT Lname, Major, GPAFROM STUDENT;
BACS 485
SQL Practice 2 Write a valid SQL query to retrieve
and display the SSN, last name, and classification of all math majors.
BACS 485
SQL Answer 2 Write a valid SQL query to retrieve
and display the SSN, last name, and classification of all math majors.
SELECT SSN, Lname, ClassFROM STUDENTWHERE Major = “Math”;
BACS 485
SQL Practice 3 Write an SQL query to display the
SSN and last name of all seniors with a grade point average above 3.5.
BACS 485
SQL Answer 3 Write an SQL query to display the
SSN and last name of all seniors with a grade point average above 3.5.
SELECT SSN, LnameFROM STUDENTWHERE Class = “Senior”
AND GPA > 3.5;
BACS 485
SQL Practice 4 Write an SQL query to display the
name, department, title, and salary of all teachers who make between $30,000 and $40,000. Sort the results in ascending salary order.
BACS 485
SQL Answer 4 Write an SQL query to display the
name, department, title, and salary of all teachers who make between $30,000 and $40,000. Sort the results in ascending salary order.
SELECT Name, Dept, Title, SalaryFROM TEACHERWHERE Salary between 30000 and
40000ORDER BY Salary;
BACS 485
SQL Practice 5 Write an SQL query to count the
number of classes taught.
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SQL Answer 5 Write an SQL query to count the
number of classes taught.
SELECT Count(*)FROM CLASS; -OR-
SELECT Count(ClassNum)FROM CLASS;
BACS 485
SQL Practice 6 Write an SQL query to display the
average GPA for each major. Sort the results by descending major.
BACS 485
SQL Answer 6 Write an SQL query to display the
average GPA for each major. Sort the results by descending major.
SELECT Major, AVG(GPA)FROM STUDENTGROUP BY Major
ORDER BY Major Desc;
BACS 485
SQL Practice 7 Write an SQL query to display the
faculty number, faculty name, and class numbers for all classes being taught.
BACS 485
SQL Answer 7 Write an SQL query to display the
faculty number, faculty name, and class numbers for all classes being taught.
SELECT FacNum, Name, ClassNumFROM TEACHER, CLASSWHERE TEACHER.FacNum = CLASS.FacNum;
BACS 485
SQL Practice 8 Write an SQL query to display the
class number, class name, teacher name, and credits for all classes with 1 credit hour. Sort by ascending class number.
BACS 485
SQL Answer 8 Write an SQL query to display the
class number, class name, teacher name, and credits for all classes with 1 credit hour. Sort by ascending class number.
SELECT ClassNum, ClassName, Name, CreditsFROM TEACHER, CLASSWHERE TEACHER.FacNum = CLASS.FacNum
AND Credits = 1ORDER BY ClassNum;
BACS 485
SQL Practice 9 Write an SQL query to display the
student number and last name, class name, and grade for all history majors.
BACS 485
SQL Answer 9 Write an SQL query to display the
student number and last name, class name, and grade for all history majors.
SELECT SSN, Lname, ClassName, GradeFROM STUDENT, ENROLL, CLASSWHERE STUDENT.SSN = ENROLL.SSN
AND CLASS.ClassNum = ENROLL.ClassNum AND Major = ‘History’;