【简答题】汽车维护一般分为常规性维护和()、()三种。
【简答题】A.UPDATE S SET grade=85 WHERE SN='王二'AND CN='化学' B.UPDATE S SET grade='85' WHERE SN='王二'AND CN='化学' C.UPDATE grade=85 WHERE SN='王二'AND CN='化学' D.UPDATE grade='85'WHERE SN='王二'AND CN='化学'
【简答题】A.set to EMP Values(23115,李军,硬件测试部,,) B.set to EMP Values('23115','李军','硬件测试部',,) C.into EMP Values(23115,李军,硬件测试部,,) D.into EMP Values('23115','李军','硬件测试部',,)
【单选题】齐秦在《世界末日》这首歌中,用()主义的哲学主张,告诉我们新的思想。
【多选题】User SCOTT executes the following command on the EMP table but has not issued COMMIT, ROLLBACK, orany data definition language (DDL) command: SQL> SELECT ename FROM emp WHERE job=’CLERK’ FOR UPDATE OF...
A.
LOCK TABLE emp IN SHARE MODE;
B.
LOCK TABLE emp IN EXCLUSIVE MODE;
C.
UPDATE emp SET sal=sal*1.2 WHERE job=ANAGER?UPDATE emp SET sal=sal*1.2 WHERE job=?ANAGER?
D.
INSERT INTO emp(empno,ename) VALUES (1289,’Harry’);
E.
SELECT ename FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno
【简答题】_____ A.set to EMP Values(23115,李军,硬件测试部,,) B.set to EMP Values('23115','李军','硬件测试部',,) C.into EMP Values(23115,李军,硬件测试部,,) D.into EMP Values('23115','李军','硬件测试部',,) A. B. C. D.
【简答题】据有关汽车强制维护管理方面的规定,汽车维护一般分为日常维护、一级维护、____和走合期维护。
【单选题】Examine the structure of the EMPLOYEES table: EMPLOYEE_ID NUMBER Primary Key FIRST_NAME VARCHAR2(25) LAST_NAME VARCHAR2(25) HIRE_DATE DATE You issue these statements: CREATE table new_emp ( employe_id...
A.
You have no rows in the table.
B.
You have an employee with the name of James.
C.
You cannot roll back to the same savepoint more than once.
D.
Your last update fails to update any rows because employee ID 180 was already deleted.
【简答题】据有关汽车强制维护管理方面的规定,汽车维护一般分为日常维护、一级维护、二级维护和____。
【简答题】某初级中学组织学生参加校内足球对抗赛,每年级派出2支队伍参加比赛。采用单循环赛制,前4名出线打下一阶段的淘汰赛。请编排单循环比赛阶段对阵表。