在SQL查询中将别名命名为汇总？

Question

我在我的SQL查询中使用with rollup。我没有获得汇总的别名。

我的SQL是

SELECT [Column1],
       sum([Column2])
FROM   Tablea
GROUP  BY [Column2] WITH ROLLUP 

返回

s       8
t       8
j       8
null    24 

如何替换总行中的NULL？

Answer 1

您可以在CASE表达式中使用GROUPING函数。

SELECT CASE
         WHEN GROUPING([Column1]) = 1 THEN 'Total'
         ELSE [Column1]
       END [Column1],
       sum([Column2])
FROM   Tablea
GROUP  BY [Column1] WITH ROLLUP 

SQL Fiddle

Answer 2

select 
isnull([column1],'rollup'), 
sum([column2] )
from tableA
group by [column1] 
WITH ROLLUP

Answer 3

SELECT ifnull([column1],'total'),
       sum([Column2])
FROM   Tablea
GROUP  BY [Column2] WITH ROLLUP