![]() Simply click to find the current coupons that are available. The thing about couponing is that it’s a numbers game. This is the unfortunate manual aspect of couponing, along with cutting out the coupons and entering them into the spreadsheet. You can also use the database to search out coupons for the products you use most. Once you find a coupon you want to use in the database, you then go to the corresponding envelope and take the coupon out. The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement. Choose from a variety of printable coupons, digital coupons and much more. There is no need to specify DESC because the results are sorted in descending order by default. The second statement returns a syntax error. The two statements produce identical results. ![]() SELECT last_name, salary, hire_date FROM EMPLOYEES ORDER BY 2 DESC SELECT last_name, salary, hire_date FROM EMPLOYEES ORDER BY salary DESC Only one column or expression can be compared between the main query and subqeury Sub queries can contain ORDER BY but not the GROUP BY clause Main query and sub query must get data from the same tables Sub queries can contain GROUP BY and ORDER BY clauses Main query and sub query can get data from different tables Multiple columns or expressions can be compared between the main query and sub query Which three statements are true regarding sub queries? (Choose three.) Which statement creates the foreign key?ĬREATE TABLE student_grades (student_id NUMBER(12),semester_end DATE, gpa NUMBER(4,3), CONSTRAINT student_id_fk REFERENCES (student_id) FOREIGN KEY students(student_id)) ĬREATE TABLE student_grades(student_id NUMBER(12),semester_end DATE, gpa NUMBER(4,3), student_id_fk FOREIGN KEY (student_id) REFERENCES students(student_id)) ĬREATE TABLE student_grades(student_id NUMBER(12),semester_end DATE, gpa NUMBER(4,3), CONSTRAINT FOREIGN KEY (student_id) REFERENCES students(student_id)) ĬREATE TABLE student_grades(student_id NUMBER(12),semester_end DATE, gpa NUMBER(4,3), CONSTRAINT student_id_fk FOREIGN KEY (student_id) REFERENCES students(student_id)) You need to create a foreign key on the STUDENT_ID column of the STUDENT_GRADES table that points to the STUDENT_ID column of the STUDENTS table. ![]() The STUDENT_ID column in the STUDENTS table is a primary key. Both of the tables have a column named STUDENT_ID. The STUDENT_GRADES table stores information about the student’s grades. The STUDENTS table stores information about a student. You need to design a student registration database that contains several tables storing academic information. You must be the owner of the table or have DELETE ANY TABLE system privileges to truncate the DEPT table You can NOT roll back the deletion of rows after the statement executes.Īn attempt to use DESCRIBE on the DEPT table after the TRUNCATE statement executes will display an error. You can roll back the deletion of rows after the statement executes. It does not release the storage space used by the table. It releases the storage space used by the table. Which three are true about the SQL statement? (Choose three.)
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