甲骨文整合两行成列

Question

需要帮助，显示2行作为合并列
制造这一形象来说明问题 谢谢你的帮助

Answer 1

如果你只需要2个城市那么简单的东西可能是使用解析函数：

select distinct studentname 
    , min(city) over (partition by studentname) as city1 
    , min(street1) over (partition by studentname) as street1 
    , case when min(city) over (partition by studentname) 
        <> nvl(max(city) over (partition by studentname), 'x') 
       then max(city) over (partition by studentname) end as city2 
    , case when min(street) over (partition by studentname) 
        <> nvl(max(street) over (partition by studentname), 'x') 
       then max(street) over (partition by studentname) end as street2 
    from my_table 

虽然我要补充一点，你可能不应该这样做。如果学生有3个地址会发生什么？

Answer 2

我想你想这个方式是不正确的。

您应该返回“Ted”的2行，并使用您的视图/报告代码来处理输出。如果您的需求发生变化，这样会更容易，并且可以让您更快地更改您的视图/报告。