A、 SELECT Sno FROM SC WHERE COUNT(*) >3
B、 SELECT Sno FROM SC GROUP BY Sno
C、 SELECT Sno FROM SC GROUP BY Sno HAVING COUNT(*)>3
D、 SELECT Sno FROM SC GROUP BY Sno WHERE COUNT(*)>3
答案:C
A、 SELECT Sno FROM SC WHERE COUNT(*) >3
B、 SELECT Sno FROM SC GROUP BY Sno
C、 SELECT Sno FROM SC GROUP BY Sno HAVING COUNT(*)>3
D、 SELECT Sno FROM SC GROUP BY Sno WHERE COUNT(*)>3
答案:C
A. UPDATE 语句可以使用GROUP子句。
B. 在使用UPDATE语句的时候必须有UPDATE权限。
C. 在更新表的时候,能使用ORDER BY子句。
D. WHERE子句是对满足条件的记录进行更新。
A. svn add
B. svn commit
C. svn update
D. svn status
A. svn checkout
B. svn diff
C. svn commit
D. svn update
A. EXISTS
B. DISTINCT
C. NOT EXISTS
D. COUNT
A. Spring各模块之间是紧密联系的,相互以来的
B. Spring各模块之间可以单独存在
C. Spring的核心模块是必须的,其他模块是基于核心模块
D. Spring的核心模块不是必须的,可以不要
A. svn checkout
B. svn diff
C. svn commit
D. svn update
A. SELECT 成绩 FROM student JOIN SC on student.学号=SC.学号 WHERE student.name=“宋倩”;
B. SELECT 成绩 FROM student,SC on student.学号=SC.学号 WHERE student.name=“宋倩”;
C. SELECT 成绩 FROM student,SC WHERE student.学号=SC.学号 OR student.name=“宋倩”;
D. SELECT 成绩 FROM student JOIN SC WHERE student.学号=SC.学号 OR student.name=“宋倩;