T-SQL 从 Nvarchar 转换为 Int

Question

我想订购一些数据，需要在table最后输入总数。但问题是因为总计的名称必须是总计（这是一项作业并且必须相同）我需要将 weeeks 转换为 nvarchar。问题是当我这样做时，它没有正确排序数据。我该如何解决这个问题？

select CASE GROUPING(Weeks) WHEN 1 THEN 'Total' ELSE Weeks END as Weeks, SUM(Goals) as Total_Goals
from 
(
        SELECT Cast([Week] AS NVARCHAR(50)) as Weeks, SUM([Home Score]) as Goals from Fixture
        group by [Week]
        union
        SELECT Cast([Week] AS NVARCHAR(50)) as Weeks, SUM([Away Score]) as Goals from Fixture 
        group by [Week]

) as tblGoals
group by Weeks with ROLLUP
order by Weeks

数据：

 Weeks  Total_Goals
1   33
10  32
11  47
12  29
13  20
14  28
15  37
16  29
17  37
18  32
19  35
2   33
20  33
21  37
22  14
23  43
24  33
25  28
26  32
27  35
28  44
29  43
3   31
30  39
31  43
32  35
33  42
34  37
4   37
5   34
6   39
7   20
8   29
9   33
Total   1153

Answer 1

将周转换为字符串时，用“0”将值填充为 2。

select REPLACE(STR(CAST(weeks AS Varchar(2)), 2), SPACE(1), '0')

Answer 2

由于您将周数转换为 nvarchar，因此它按字母顺序而不是数字顺序排序。

按周排序时，将其转换回整数。

order by cast(Weeks as int)

Answer 3

以下查询将解决您的问题。

创建table#Schedule（周整数，Total_Goals整数）

插入#Schedule 值 (1 , 33), (10 ,32), (11 ,47), (12 , 29), (13, 20), (14 , 28), (15 , 37), (16 , 29), (17 , 37), (18 , 32), (19 , 35), (2, 33), (20 , 33), (21 , 37), (22 , 14), (23, 43), (24, 33), (25 , 28), (26 , 32), (27 , 35), (28 , 44), (29 , 43), (3, 31), (30 , 39), (31, 43), (32 , 35), (33, 42), (34 , 37), (4 , 37), (5 , 34), (6 , 39), (7 , 20), (8 , 29), (9 , 33) --总计1153

SELECT Isnull(Cast([Weeks] AS NVARCHAR(50)),'Total') as Weeks, SUM(Total_Goals) as Goals from #Schedule 使用 ROLLUP

按 [Weeks] 分组

T-SQL 从 Nvarchar 转换为 Int

T-SQL Casting From Nvarchar to Int

tsql

int

casting

nvarchar

sql-server-2008