Sql server 如何在sql中完成完整系列

我想实现从0到表中最大数字的完整数字刻度

假设我们有一个表T，它有两个名为x和y的字段

select x,y
from t

让我们看看结果

X Y
3 11
5 23
7 45
9 1 
10 34

我发现此查询用于生成序列号：

With T_Misparim As

(Select 1 N
Union All
Select  N+1 N
From    T_Misparim
Where   N<1000)
Select  N
From    T_Misparim
Option (MaxRecursion 0);

---

您只需使用序号CTE左键连接

select 3 as X, 11 as Y into #TEST
insert #TEST values (5,23),(7,45),(9,1),(10,34)

;with NUMS(n) as (
    select 0 union all
    select 1 + n from NUMS where n < 50
)
select
    NUMS.n N,
    T.X,
    isnull(T.Y, 0) Y
from NUMS
    left join #TEST T on (T.X = NUMS.n)
option (maxrecursion 50)

---

您只需使用序号CTE左键连接

select 3 as X, 11 as Y into #TEST
insert #TEST values (5,23),(7,45),(9,1),(10,34)

;with NUMS(n) as (
    select 0 union all
    select 1 + n from NUMS where n < 50
)
select
    NUMS.n N,
    T.X,
    isnull(T.Y, 0) Y
from NUMS
    left join #TEST T on (T.X = NUMS.n)
option (maxrecursion 50)

N   X   Y
0   NULL    0
1   NULL    0
2   NULL    0
3   3   11
4   NULL    0
5   5   23
6   NULL    0
7   7   45
8   NULL    0
9   9   1
10  10  34