对由SELECT--FROM—WHERE—GROUP--ORDER组成的SQL语句，其在被DBMS处理时，各子句的执行次序为SELECT—FROM—GROUP—WHERE—ORDER。

在SQL查询语句中以下正确的子句顺序是？ A: WHERE --- GROUP BY --- HAVING --- ORDER BY B: GROUP BY --- HAVING --- ORDER BY --- WHERE C: WHERE --- HAVING --- GROUP BY --- ORDER BY D: GROUP BY --- ORDER BY --- HAVING --- WHERE

把查询语句的各个子句按执行的先后顺序排列，正确的是( ) A: FROM→WHERE→GROUP BY→SELECT→ORDER BY B: SELECT→FROM→WHERE→GROUP BY→ORDER BY C: WHERE→FROM→SELECT→GROUP BY→ORDER BY D: FROM→WHERE→SELECT→ORDER BY→GROUP BY

以下SQL子句的撰写顺序表达正确的是： A: SELECT、FROM、WHERE、GROUP BY、HAVING、ORDER BY B: SELECT、FROM、WHERE、HAVING、GROUP BY、ORDER BY C: SELECT、FROM、WHERE、ORDER BY、HAVING、GROUP BY D: SELECT、FROM、ORDER BY、WHERE、GROUP BY、HAVING

If a group has at least two elements of order 2, then this group is not cyclic.

将查询结果按照升序排列的是（）。 A: ORDER BY DESC B: ORDER BY ASC C: GROUP BY DESC D: GROUP BY ASC

在select语句中，用来指定查询结果排序依据的子句是（ ）。 A: order by B: group by C: order D: group

分组查询的关键字是（ ） A: order by B: from C: group by D: group

In order to work well as a group a great deal of ____ is needed.

A．SELECT Cno, AVG(Score) FROM SCS GROUP BY Score ORDER BY 2, Cno Desc B．SELECT Cno, AVG(Score) FROM SCS GROUP BY Cno ORDER BY 2, Cno Desc C．SELECT Cno, AVG(Score) FROM SCS WHERE Cno, Desc GROUP BY Score D．SELECT Cno, AVG(Score) FROM SCS GROUP BY, AVG(Score) ORDER BY, Cno Desc