需要将输出作为正数和负数从一列获取到表中的不同列？

Question

我需要针对以下场景的解决方案：

表A

col1
2
4
-6
-5
4
-2
5
2

上表A是我的来源，我希望输出为：

Positive      Negative
2              -6
4              -5
4              -2
5
2

我得到的输出如下：

Positive      Negative
2              NULL
4              NULL
4              NULL
5              NULL
2              NULL
NULL           -6
NULL           -5
NULL           -2

这是我尝试过的查询：

SELECT pos.col2 AS 'Positive',neg.col2 AS 'negative'
FROM
(SELECT col2 FROM colum1 WHERE col2 < 0) neg FULL OUTER JOIN
(SELECT col2 FROM colum1 WHERE col2 > 0) pos
ON pos.col2 = neg.col2

Answer 1

试试这个 -

DECLARE @temp TABLE (col INT)

INSERT INTO @temp (col)
VALUES (2), (4), (-6), (-5), (4), (-2), (5), (2)

SELECT Positive, Negative 
FROM (
    SELECT Positive = col, RowNum = ROW_NUMBER() OVER (ORDER BY 1/0) 
    FROM @temp
    WHERE col >= 0
) t
FULL JOIN (
    SELECT Negative = col, RowNum = ROW_NUMBER() OVER (ORDER BY 1/0)  
    FROM @temp
    WHERE col < 0
) t2 on t.RowNum = t2.RowNum

输出 -

Positive    Negative
----------- -----------
2           -6
4           -5
4           -2
5           NULL
2           NULL