填空题

在Visual FoxPro中所谓自由表就是不属于任何______的表。

【参考答案】

数据库

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填空题

为了判别LOCATE或CONTINUE命令是否找到了满足条件的记录，可以使用函数______。

单项选择题

检索最少有4名职工仓库的职工平均工资( )。

A．SELECT 仓库号,COLINT(*) AS 人数,AVG(工资) AS 平均工资 FROM 职工; GROUP BY 仓库号 WHERE COUNT(*)＞=4
B．SELECT 仓库号,COUNT(*) AS 人数,AVG(工资) AS 平均工资 FROM 职工; GROUP BY 仓库号 HAVING COUNT(*)＞=4
C．SELECT 仓库号,COUNT(*) AS 人数,AVG (工资) AS 平均工资 FROM 职工; GROUP BY 职工号 WHERE COUNT(*)＞=4
D．SEIECT 仓库号,COUNT(*) AS 人数,AVG(工资) AS 平均工资 FROM 职工; GROUP BY 职工号 HAVING COUNT(*)＞=4

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