如何通过 Sql-服务器查询在 Parent_Id 和 Child_Id 中安排 Table 数据
How To Arrange Table Data in Parent_Id And Child_Id Wise Via Sql-Server Query
如何通过Sql-服务器查询在Parent_Id和Child_Id中安排Table数据?
我的查询
select CLevel_Id,Category_Name,Parent_Id,Child_Id,Level_Id from Category_Level
order by Parent_Id asc
当前输出
CLevel_Id Category_Name Parent_Id Child_Id Level_Id
12 Jewelry 1 0 1
14 Rings 2 1 2
15 Men-Rings 3 2 3
17 Women-Rings 4 2 3
18 Earrings 5 1 2
20 Women-Earings 6 5 3
1013 Metal-Fashion 7 3 4
1015 Diamond-Fashion 8 4 4
1016 Semi-Set 9 6 4
预期输出
CLevel_Id Category_Name Parent_Id Child_Id Level_Id
12 Jewelry 1 0 1
14 Rings 2 1 2
15 Men-Rings 3 2 3
1013 Metal-Fashion 7 3 4
17 Women-Rings 4 2 3
1015 Diamond-Fashion 8 4 4
18 Earrings 5 1 2
20 Women-Earings 6 5 3
1016 Semi-Set 9 6 4
请帮帮我
使用递归 CTE。
假设每个级别最多 9 个。使用单个数字作为序列级别。如果超过 9,则需要使用 2 位数字,例如 01、02 等
; with
rcte as
(
-- Anchor member, seq = 1
select *, seq = convert(varchar(100), '1')
from Category_Level
where Child_Id = 0
union all
-- recursive member, concatenate to the seq
select c.*, seq = convert(varchar(100),
r.seq
+ convert(varchar(10), row_number() over (partition by r.seq
order by c.Child_Id)))
from Category_Level c
inner join rcte r on c.Child_Id = r.Parent_Id
)
select *
from rcte
order by seq
/* RESULT
CLevel_Id Category_Name Parent_Id Child_Id Level_Id seq
----------- -------------------- ----------- ----------- ----------- -------
12 Jewelry 1 0 1 1
14 Rings 2 1 2 11
15 Men-Rings 3 2 3 111
1013 Metal-Fashion 7 3 4 1111
17 Women-Rings 4 2 3 112
1015 Diamond-Fashion 8 4 4 1121
18 Earrings 5 1 2 12
20 Women-Earings 6 5 3 121
1016 Semi-Set 9 6 4 1211
(9 rows affected)
*/
如何通过Sql-服务器查询在Parent_Id和Child_Id中安排Table数据?
我的查询
select CLevel_Id,Category_Name,Parent_Id,Child_Id,Level_Id from Category_Level
order by Parent_Id asc
当前输出
CLevel_Id Category_Name Parent_Id Child_Id Level_Id
12 Jewelry 1 0 1
14 Rings 2 1 2
15 Men-Rings 3 2 3
17 Women-Rings 4 2 3
18 Earrings 5 1 2
20 Women-Earings 6 5 3
1013 Metal-Fashion 7 3 4
1015 Diamond-Fashion 8 4 4
1016 Semi-Set 9 6 4
预期输出
CLevel_Id Category_Name Parent_Id Child_Id Level_Id
12 Jewelry 1 0 1
14 Rings 2 1 2
15 Men-Rings 3 2 3
1013 Metal-Fashion 7 3 4
17 Women-Rings 4 2 3
1015 Diamond-Fashion 8 4 4
18 Earrings 5 1 2
20 Women-Earings 6 5 3
1016 Semi-Set 9 6 4
请帮帮我
使用递归 CTE。
假设每个级别最多 9 个。使用单个数字作为序列级别。如果超过 9,则需要使用 2 位数字,例如 01、02 等
; with
rcte as
(
-- Anchor member, seq = 1
select *, seq = convert(varchar(100), '1')
from Category_Level
where Child_Id = 0
union all
-- recursive member, concatenate to the seq
select c.*, seq = convert(varchar(100),
r.seq
+ convert(varchar(10), row_number() over (partition by r.seq
order by c.Child_Id)))
from Category_Level c
inner join rcte r on c.Child_Id = r.Parent_Id
)
select *
from rcte
order by seq
/* RESULT
CLevel_Id Category_Name Parent_Id Child_Id Level_Id seq
----------- -------------------- ----------- ----------- ----------- -------
12 Jewelry 1 0 1 1
14 Rings 2 1 2 11
15 Men-Rings 3 2 3 111
1013 Metal-Fashion 7 3 4 1111
17 Women-Rings 4 2 3 112
1015 Diamond-Fashion 8 4 4 1121
18 Earrings 5 1 2 12
20 Women-Earings 6 5 3 121
1016 Semi-Set 9 6 4 1211
(9 rows affected)
*/