Question

我这里有点问题。我有以下选择

isolation: true

提供了这个结果：

SELECT ProjektName, Budget  FROM projekt p1  WHERE p1.Budget=(
    SELECT MAX(p2.Budget) FROM projekt p2
)
UNION
SELECT ProjektName, Budget   FROM projekt p1  WHERE p1.Budget=(
    SELECT MIN(p2.Budget) FROM projekt p2
)

但是，我想要写一个字母表，而不是价值，这个字符串就像＆＃34;这是最大的预算＆＃34;

像这样：

Projektname     Budget
projekt1        100000
projekt2        30000

随处搜索，但只找到了在选择中更改预算而不是结果的解决方案。

提前谢谢！

Answer 1

只需在SELECT列表中放入一个文字字符串。

SELECT ProjektName, 'This is the max Budget' AS Budget  
FROM projekt p1  
WHERE p1.Budget=(
    SELECT MAX(p2.Budget) FROM projekt p2
)
UNION
SELECT ProjektName, 'This is the min Budget' AS Budget   
FROM projekt p1  
WHERE p1.Budget=(
    SELECT MIN(p2.Budget) FROM projekt p2
)

Answer 2

使用CONCAT：

SELECT ProjektName, CONCAT ('This ' , Budget , ' is the max Budget') as Budget  FROM projekt p1  WHERE p1.Budget=(
    SELECT MAX(p2.Budget) FROM projekt p2
)
UNION
SELECT ProjektName, CONCAT ('This ' , Budget , ' is the min Budget') as Budget   FROM projekt p1  WHERE p1.Budget=(
    SELECT MIN(p2.Budget) FROM projekt p2
)

条件为正确SQL时，输出应为String

2 个答案: