无法在sql中交换行

Question

我有下表，首先插入名称。然后我会得到我需要用名字映射的ID

     ID  NAME
    null   Test1
    null    Test2
    1      null
    2      null

我需要像

这样的结果

ID  NAME
1    Test1
2    Test2

我尝试了下面的查询，但它对我不起作用

select t1.ID , t2.Name from table1 T1 join table1 t2 on T1.id = t2.id

Answer 1

根据屏幕简介，您正在使用SQL Server，您可以尝试double表达式，这可能对您有所帮助

cte

结果：

;with cte as
(
    select max(id) id, row_number() over (order by (select 1)) rn from
    ( 
       select *, rank() over(order by id) rnk from table
    ) a
    group by a.rnk 
    having max(id) is not null
), cte1 as
(
    select max(name) name, row_number() over (order by (select 1)) rn from
    ( 
       select *, rank() over(order by name) rnk from table
    ) a
    group by a.rnk 
    having max(name) is not null
)
select c.id, c1.name from cte c
join cte1 c1 on c1.rn = c.rn