单选题The STUDENT_GRADES table has these columns: STUDENT_ID NUMBER(12) SEMESTER_END DATE GPA NUMBER(4,3) The register has requested a report listing the students' grade point averages (GPA), sorted from highest grade point average to lowest within each semester, starting from the earliest date. Which statement accomplishes this?（）ASELECT student_id, semester_end, gpa FROM student_grades ORDER BY semester_end DESC, gpa DESC;BSELECT student_id, semester_end, gpa FROM student_grades ORDER BY semester _end, ASC,gpa ASC;CSELECT student_id, semester_end, gpa FROM student_grades ORDER BY semester _end, gpa DESC;DSELECT student_id, semester_end, gpa FROM student_grades ORDER BY gpa DESC,semester_end DESC;ESELECT student_id, semester_end, gpa FROM student_grades
单选题
The STUDENT_GRADES table has these columns: STUDENT_ID NUMBER(12) SEMESTER_END DATE GPA NUMBER(4,3) The register has requested a report listing the students' grade point averages (GPA), sorted from highest grade point average to lowest within each semester, starting from the earliest date. Which statement accomplishes this?（）
A
SELECT student_id, semester_end, gpa FROM student_grades ORDER BY semester_end DESC, gpa DESC;
B
SELECT student_id, semester_end, gpa FROM student_grades ORDER BY semester _end, ASC,gpa ASC;
C
SELECT student_id, semester_end, gpa FROM student_grades ORDER BY semester _end, gpa DESC;
D
SELECT student_id, semester_end, gpa FROM student_grades ORDER BY gpa DESC,semester_end DESC;
E
SELECT student_id, semester_end, gpa FROM student_grades
参考解析
解析：
暂无解析
相关考题：
The STUDENT_GRADES table has these columns:STUDENT_ID NUMBER(12)SEMESTER_END DATEGPA NUMBER(4,3)The registrar requested a report listing the students‘ grade point averages (GPA) sorted from highest grade point average to lowest.Which statement produces a report that displays the student ID and GPA in the sorted order requested by the registrar? （）A. SELECT student_id, gpa FROM student_grades ORDER BY gpa ASC;B. SELECT student_id, gpa FROM student_grades SORT ORDER BY gpa ASC;C. SELECT student_id, gpa FROM student_grades SORT ORDER BY gpa;D. SELECT student_id, gpa FROM student_grades ORDER BY gpa;E. SELECT student_id, gpa FROM student_grades SORT ORDER BY gpa DESC;F. SELECT student_id, gpa FROM student_grades ORDER BY gpa DESC;
You need to modify the STUDENTS table to add a primary key on the STUDENT_ID column. The table is currently empty. Which statement accomplishes this task?() A. ALTER TABLE students ADD PRIMARY KEY _ id;B. ALTER TABLE students ADD CONSTRAINT PRIMARY KEY (student_id);C. ALTER TABLE students ADD CONSTRAINT stud_id_pk PRIMARY KEY student_id;D. ALTER TABLE students ADD CONSTRAINT stud_id_pk PRIMARY KEY (student_id);E. ALTER TABLE students MODIFY CONSTRAINT stud_id_pk PRIMARY KEY (student_id);
Which statement explicitly names a constraint? () A. ALTER TABLE student_grades ADD FOREIGN KEY (student_id) REFERENCES students (student_id);B. ALTER TABLE student_grades ADD CONSTRAINT NAME = student_id_fk FOREIGN KEY (student_id) REFERENCES students (student_id);C. ALTER TABLE student_grades ADD CONSTRAINT student_id_fk FOREIGN KEY (student_id) REFERENCES students (student_id);D. ALTER TABLE student grades ADD NAMED CONSTRAINT student_id_fk FOREIGN KEY (student_id) REFERENCES students (student_id);E. ALTER TABLE student grades ADD NAME student_id_fk FOREIGN KEY (student_id) REFERENCES students (student_id);
You need to replicate a table from a master to a slave. The master and slave copies of the table will have different number of columns.Which two conditions must be true?() A.Each extra column in the copy with more columns must not have a default valueB.Columns that are common to both versions of the table must be defined in the same order on the master and the slaveC.The slave database cannot have more columns than the master. Only the master database can have more columnsD.Columns that are common to both versions of the table must come first in the table definition, before any additional columns are additional columns are defined on either serverE.The master database cannot have more columns than the slave. Only the slave deatbase can have more columns
The EMPLOYEES table has these columns:Management wants to add a default value to the SALARY column. You plan to alter the table by using this SQL statement:What is true about your ALTER statement?() A. Column definitions cannot be altered to add DEFAULT values.B. A change to the DEFAULT value affects only subsequent insertions to the table.C. Column definitions cannot be altered at add DEFAULT values for columns with a NUMBER data type.D. All the rows that have a NULL value for the SALARY column will be updated with the value 5000.
The STUDENT_GRADES table has these columns:The register has requested a report listing the students‘ grade point averages (GPA), sorted from highest grade point average to lowest within each semester, starting from the earliest date. Which statement accomplishes this?（）A. SELECT student_id, semester_end, gpa FROM student_grades ORDER BY semester_end DESC, gpa DESC;B. SELECT student_id, semester_end, gpa FROM student_grades ORDER BY semester_end ASC, gpa ASC;C. SELECT student_id, semester_end, gpa FROM student_grades ORDER BY semester_end, gpa DESC;D. SELECT student_id, semester_end, gpa FROM student_grades ORDER BY gpa DESC, semester_end DESC;E. SELECT student_id, semester_end, gpa FROM student_grades ORDER BY gpa DESC, semester_end ASC;
The STUDENT_GRADES table has these columns:The registrar has asked for a report on the average grade point average (GPA) for students enrolled during semesters that end in the year 2000. Which statement accomplish this?（）A.B.C.D.E.F.
In which of the following situations should correlation names be used?() A.A table referenced in the FROM clause has no indexed column.B.The table referenced in the FROM clause has more than 200 columns.C.Two or more tables in the FROM clause have identical column names.D.The FROM clause contains two or more tables in the SELECT statement.
In which of the following situations should correlation names be used?（）A、A table referenced in the FROM clause has no indexed column.B、The table referenced in the FROM clause has more than 200 columns.C、Two or more tables in the FROM clause have identical column names.D、The FROM clause contains two or more tables in the SELECT statement.
You need to replicate a table from a master to a slave. The master and slave copies of the table will have different number of columns. Which two conditions must be true?（）A、Each extra column in the copy with more columns must not have a default valueB、Columns that are common to both versions of the table must be defined in the same order on the master and the slaveC、The slave database cannot have more columns than the master. Only the master database can have more columnsD、Columns that are common to both versions of the table must come first in the table definition, before any additional columns are additional columns are defined on either serverE、The master database cannot have more columns than the slave. Only the slave deatbase can have more columns
Examine the statement: GRANT select, insert, update ON student_grades TO manager WITH GRANT OPTION; Which two are true?（）A、MANAGER must be a role.B、It allows the MANAGER to pass the specified privileges on to other users.C、It allows the MANAGER to create tables that refer to the STUDENT_GRADES table.D、It allows the MANAGER to apply all DML statements on the STUDENT_GRADES table.E、It allows the MANAGER the ability to select from, insert into, and update the STUDENT_GRADES table.F、It allows the MANAGER the ability to select from, delete from, and update the STUDENT_GRADES table.
You need to modify the STUDENTS table to add a primary key on the STUDENT_ID column. The table is currently empty.Which statement accomplishes this task?（）A、ALTER TABLE students ADD PRIMARY KEY student_id;B、ALTER TABLE students ADD CONSTRAINT PRIMARY KEY (student _ id);C、ALTER TABLE students ADD CONSTRAINT stud _ id _pk PRIMARY KEY (student _ id);D、ALTER TABLE students MODIFY CONSTRAINT stud _ id _pk PRIMARY KEY (student _ id);
You need to modify the STUDENTS table to add a primary key on the STUDENT_ID column. The table is currently empty. Which statement accomplishes this task?（）A、ALTER TABLE students ADD PRIMARY KEY _ id;B、ALTER TABLE students ADD CONSTRAINT PRIMARY KEY (student_id);C、ALTER TABLE students ADD CONSTRAINT stud_id_pk PRIMARY KEY student_id;D、ALTER TABLE students ADD CONSTRAINT stud_id_pk PRIMARY KEY (student_id);E、ALTER TABLE students MODIFY CONSTRAINT stud_id_pk PRIMARY KEY (student_id);
The STUDENT_GRADES table has these columns: STUDENT_ID NUMBER(12) SEMESTER_END DATE GPA NUMBER(4,3) The register has requested a report listing the students' grade point averages (GPA), sorted from highest grade point average to lowest within each semester, starting from the earliest date. Which statement accomplishes this?（）A、SELECT student_id, semester_end, gpa FROM student_grades ORDER BY semester_end DESC, gpa DESC;B、SELECT student_id, semester_end, gpa FROM student_grades ORDER BY semester _end, ASC,gpa ASC;C、SELECT student_id, semester_end, gpa FROM student_grades ORDER BY semester _end, gpa DESC;D、SELECT student_id, semester_end, gpa FROM student_grades ORDER BY gpa DESC,semester_end DESC;E、SELECT student_id, semester_end, gpa FROM student_grades
多选题You need to replicate a table from a master to a slave. The master and slave copies of the table will have different number of columns. Which two conditions must be true?（）AEach extra column in the copy with more columns must not have a default valueBColumns that are common to both versions of the table must be defined in the same order on the master and the slaveCThe slave database cannot have more columns than the master. Only the master database can have more columnsDColumns that are common to both versions of the table must come first in the table definition, before any additional columns are additional columns are defined on either serverEThe master database cannot have more columns than the slave. Only the slave deatbase can have more columns
单选题Which statement explicitly names a constraint?（）AALTER TABLE student_grades ADD FOREIGN KEY (student_id) REFERENCES students (student_id);BALTER TABLE student_grades ADD CONSTRAINT NAME = student_id_fk FOREIGN KEY (student_id) REFERENCES students (student_id);CALTER TABLE student_grades ADD CONSTRAINT student_id_fk FOREIGN KEY (student_id) REFERENCES students (student_id);DALTER TABLE student grades ADD NAMED CONSTRAINT student_id_fk FOREIGN KEY (student_id) REFERENCES students (student_id);EALTER TABLE student grades ADD NAME student_id_fk FOREIGN KEY (student_id) REFERENCES students (student_id);
单选题The STUDENT_GRADES table has these columns STUDENT_ID NUMBER(12) SEMESTER_END DATE GPA NUMBER(4,3) Which statement finds students who have a grade point average (GPA) greater than 3.0 for the calendar year 2001?（）ASELECT student_id, gpa FROM student_grades WHERE semester_end BETWEEN '01-JAN-2001' AND '31-DEC-2001' OR gpa 3.;BSELECT student_id, gpa FROM student_grades WHERE semester_end BETWEEN '01-JAN-2001' AND '31-DEC-2001' AND gpa gt 3.0;CSELECT student_id, gpa FROM student_grades WHERE semester_end BETWEEN '01-JAN-2001' AND '31-DEC-2001' AND gpa 3.0;DSELECT student_id, gpa FROM student_grades WHERE semester_end '01-JAN-2001' OR semester_end '31-DEC-2001' AND gpa =s 3.0;
单选题You need to modify the STUDENTS table to add a primary key on the STUDENT_ID column. The table is currently empty. Which statement accomplishes this task?（）AALTER TABLE students ADD PRIMARY KEY _ id;BALTER TABLE students ADD CONSTRAINT PRIMARY KEY (student_id);CALTER TABLE students ADD CONSTRAINT stud_id_pk PRIMARY KEY student_id;DALTER TABLE students ADD CONSTRAINT stud_id_pk PRIMARY KEY (student_id);EALTER TABLE students MODIFY CONSTRAINT stud_id_pk PRIMARY KEY (student_id);
单选题The STUDENT_GRADES table has these columns: STUDENT_ID NUMBER(12) SEMESTER_END DATE GPA NUMBER(4,3) The registrar requested a report listing the students' grade point averages (GPA) sorted from highest grade point average to lowest. Which statement produces a report that displays the student ID and GPA in the sorted order requested by the registrar?（）ASELECT student_id, gpa FROM student_grades ORDER BY gpa ASC;BSELECT student_id, gpa FROM student_grades SORT ORDER BY gpa ASC;CSELECT student_id, gpa FROM student_grades SORT ORDER BY gpa;DSELECT student_id, gpa FROM student_grades ORDER BY gpa;ESELECT student_id, gpa FROM student_grades SORT ORDER BY gpa DESC;FSELECT student_id, gpa FROM student_grades ORDER BY gpa DESC;
单选题The STUDENT_GRADES table has these columns: STUDENT_ID NUMBER(12) SEMESTER_END DATE GPA NUMBER(4,3) The registrar has asked for a report on the average grade point average (GPA) for students enrolled during semesters that end in the year 2000. Which statement accomplish this? （）ASELECT AVERAGE(gpa) FROM student_grades WHERE semester _ end '01-JAN-2000' and semester end 31-DEC-2000';BSELECT COUNT(gpa) FROM student grades WHERE semester _ end '01-JAN-2000' and semester end 31-DEC-2000';CSELECT MIN(gpa) FROM student grades WHERE semester _ end '01-JAN-2000' and semester end 31-DEC-2000';DSELECT AVG(gpa) FROM student_grades WHERE semester _ end BETWEEN '01-JAN-2000' and '31-DEC-2000';ESELECT SUM(gpa) FROM student grades WHERE semester _ end '01-JAN-2000' and semester end 31-DEC-2000';FSELECT MEDIAN(gpa) FROM student_grades WHERE semester _ end '01-JAN-2000' and semester end 31-DEC-2000';
单选题You need to design a student registration database that contains several tables storing academic information. The STUDENTS table stores information about a student. The STUDENT_GRADES table stores information about the student's grades. Both of the tables have a column named STUDENT_ID. The STUDENT_ID column in the STUDENTS table is a primary key. 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. Which statement creates the foreign key?（）ACREATE TABLE student_grades (student_id NUMBER(12),semester_end DATE, gpa NUMBER(4,3), CONSTRAINT student_id_fk REFERENCES (student_id) FOREIGN KEY student (student_id));BCREATE 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));CCREATE TABLE student_grades(student_id NUMBER(12),semester_end DATE, gpa NUMBER(4,3), CONSTRAINT FOREIGN KEY (student_id) REFERENCES student (student_id));DCREATE 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));
单选题In which of the following situations should correlation names be used?（）AA table referenced in the FROM clause has no indexed column.BThe table referenced in the FROM clause has more than 200 columns.CTwo or more tables in the FROM clause have identical column names.DThe FROM clause contains two or more tables in the SELECT statement.
单选题The STUDENT_GRADES table has these columns: STUDENT_ID NUMBER(12) SEMESTER_END DATE GPA NUMBER(4,3) Which statement finds the highest grade point average (GPA) per semester?（）ASELECT MAX(gpa) FROM student_grades WHERE gpa IS NOT NULL;BSELECT (gpa) FROM student_grades GROUP BY semester_end WHERE gpa IS NOT NULL;CSELECT MAX(gpa) FROM student_grades WHERE gpa IS NOT NULL GROUP BY semester_end;DSELECT MAX(gpa) GROUP BY semester_end WHERE gpa IS NOT NULL FROM student_grades;ESELECT MAX(gpa) FROM student_grades GROUP BY semester_end WHERE gpa IS NOT NULL;
单选题You need to modify the STUDENTS table to add a primary key on the STUDENT_ID column. The table is currently empty. Which statement accomplishes this task?（）AALTER TABLE students ADD PRIMARY KEY student_id;BALTER TABLE students ADD CONSTRAINT PRIMARY KEY (student_id);CALTER TABLE students ADD CONSTRAINT stud_id_pk PRIMARY KEY student_id;DALTER TABLE students ADD CONSTRAINT stud_id_pk PRIMARY KEY (student_id);EALTER TABLE students MODIFY CONSTRAINT stud_id_pk PRIMARY KEY (student_id);
单选题The STUDENT_GRADES table has these columns: STUDENT_ID NUMBER(12) SEMESTER_END DATE GPA NUMBER(4,3) Which statement finds the highest grade point average (GPA) per semester?（）ASELECT MAX (gpa) FROM student _ grades WHERE gpa IS NOT NULL;BSELECT (gpa) FROM student _ grades GROUP BY semester_end WHERE gpa IS NOT NULL;CSELECT MAX (gpa) FROM student _ grades WHERE gpa IS NOT NULL GROUP BY semester_end;DSELECT MAX (gpa) GROUP BY semester_end WHERE gpa IS NOT NULL FROM student _ grades;ESELECT MAX (gpa) FROM student _ grades GROUP BY semester_end WHERE gpa IS NOT NULL;
多选题Examine the statement: GRANT select, insert, update ON student_grades TO manager WITH GRANT OPTION; Which two are true?（）AMANAGER must be a role.BIt allows the MANAGER to pass the specified privileges on to other users.CIt allows the MANAGER to create tables that refer to the STUDENT_GRADES table.DIt allows the MANAGER to apply all DML statements on the STUDENT_GRADES table.EIt allows the MANAGER the ability to select from, insert into, and update the STUDENT_GRADES table.FIt allows the MANAGER the ability to select from, delete from, and update the STUDENT_GRADES table.