本人是新手，做了一个表单，有一个查询按钮，按钮代码如下：
SELECT 单位, COUNT(*) as "人数" FROM mj GROUP BY 单位  
SELECT 单位, AVG(年龄) as "平均年龄" FROM mj GROUP BY 单位  
SELECT 单位, AVG(缴费年限) as "工龄" FROM mj GROUP BY 单位  
在运行时，三条命令分三次显示，问：能否一次性显示上述三个内容？
谢谢保位了。

SELECT 单位,Count(*) as "人数",AVG(年龄) as "平均年龄" ,AVG(缴费年限) as "工龄" FROM mj GROUP BY 单位

试过了，不错，非常谢谢二楼老师。