struts1 和 struts2的区别
请举通俗一点的例子来说明他们两个有着什么本质的区别 要求从struts1和struts2的详细执行过程说明。。。谢谢！！！！！
更新时间：2023-06-22 12:06
最满意答案
select decode(t.rn,1,t.单位名称) as 单位名称1 , decode(t.rn,2,t.单位名称) as 单位名称2, decode(t.rn,3,t.单位名称) as 单位名称3, from ( select c.单位名称,to_number() over(partition by c.单位名称) as rn from table1 a,table2 b,table3 c where a.id1 = b.id1 and b.id2=c.id2 ) t ; 这是在知道多少行记录数的情况下这样实现，如果不知道多少行，则最好用个中间表，搞个语句块，把相关的数先放到中间表在进行处理。
其他回答
select 字段1,字段2 from 表1 union all select 字段3,字段4 from 表1
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