I have the following requirement,
Input
CID ParentID
1 10
2 1
3 1
4 2
5 2
6 2
7 2
8 4
9 4
10 NULL
20 25
30 38
15 51
17 71
when I pass child value as 4 following is my desired output:
Desired Output:
CID ParentID
2 4
1 2
10 1
NULL 10
4 2
4 8
2 4
2 5
2 6
1 3
2 7
Please help! Thanks in advance.
Your explanation and your data don't match. I think the row (4, 2) in the results should be (4,9). If I'm correct, then this should do what you want:
with Parents(lvl, CID, ParentID) as (
select 0, ParentID, CID
from T
where CID = 4
union all
select lvl+1, T.ParentID, T.CID
from T join Parents
on T.CID = Parents.CID
)
select CID, ParentID
from Parents
union all
select T.ParentID, T.CID
from T join Parents
on Parents.ParentID = T.ParentID;
SQL fiddle here.
Related
My current T-SQL query provides the following results:
Query:
WITH CTE AS
(
SELECT SubscriberID, sum(valueMB) as ValuesMB
FROM dbo.InternetNetwork
GROUP BY SubscriberID
),
CTE2 AS (
SELECT ab.planID, a.SubscriberID, MAX(ValuesMB) as MaximumValue
FROM CTE AS a
left join
Subscriber as ab on a.SubscriberID= ab.SubscriberID
GROUP BY ab.planID, a.SubscriberID
)
select *
FROM CTE2 as b
ORDER BY b.MaximumValue desc
Output:
planID | SubscriberID | MaxValue
19 1555 97536.00
18 3528 97478.00
2 4029 93413.00
Query #2:
WITH CTE AS
(
SELECT SubscriberID, sum(valueMB) as ValuesMB
FROM dbo.InternetNetwork
GROUP BY SubscriberID
),
CTE2 AS(
SELECT ab.planID, MAX(ValuesMB) as MaximumValue
FROM CTE AS a
left join
Subscriber as ab on a.SubscriberID= ab.SubscriberID
GROUP BY ab.planID
)
SELECT pl.OperatorID, MAX(b.MaximumValue) as Super
FROM CTE2 as b
left join
Plan as pl on b.planID= pl.planID
GROUP BY pl.operatorID
ORDER BY pl.operatorID
Output #2:
OperatorID | Value
1 93413.00
2 86017.00
3 97536.00
I would like to also include a subscriberID, but I'm unable to figure out a way to do so, as the only way to do it, is including in the last SELECT and adding to GROUP BY, which when done, makes a mess of a result which is not accurate.
My desired output:
OperatorID | Value | SubscriberID
1 93413.00 4029
2 86017.00 164
3 97536.00 1544
internet network data:
SubscriberID ValuesMB
1 28
1 27
2 27
2 27
2 27
3 29
3 28
3 27
3 27
4 27
4 27
4 29
Subscriber Data:
SubscriberID PersonID PlanID
1 1 3
2 2 10
3 2 6
4 3 14
5 3 1
6 4 18
7 5 5
8 5 1
9 5 9
10 5 16
11 6 13
12 6 13
13 6 20
14 6 16
15 7 4
Plan data
PlanID OperatorID
1 1
2 1
3 2
4 2
5 2
6 2
7 2
8 2
9 2
10 2
11 2
12 3
13 3
14 3
15 3
16 3
17 3
18 3
19 3
20 3
The tables are somewhat like this related InternetNetwork-> Subscriber -> Plan. InternetNetwork contains how much each Subscribed has used. Each Subscriber has Plan associated with him. Each Plan contains a different Operator, there are only three. I wish to list all three operators, the data transferred by the subscriber of the plan that has the operator and Subscriber ID.
Window functions allow you to have fields in your select along with aggregate functions. You can do something like this
;WITH CTE AS
(
SELECT I.SubscriberID,
S.PlanID,
SUM(ValuesMB) OVER(PARTITION BY i.SubscriberID)as ValuesMB
FROM dbo.InternetNetwork I
JOIN Subscriber S
ON I.SubscriberID = S.SubscriberID
),
CTE2 AS
(
SELECT p.operatorID,
a.SubscriberID,
a.ValuesMB,
ROW_NUMBER() OVER(PARTITION BY p.operatorID ORDER BY a.ValuesMB DESC) as rn
FROM CTE a
join [Plan] P
on a.planID = P.planID
)
SELECT operatorID,
ValuesMB,
SubscriberID
FROM CTE2
where rn = 1
I have a table which has both category and subcategory such as this :
CategoryID CategoryName ParentCategoryID
1 CatA NULL
2 CatA1 1
3 CatA2 1
4 CatA3 1
5 CatB NULL
6 CatB1 5
7 CatC NULL
8 CatC1 7
I have another table where I have mappings
MappingID CategoryID ItemID
1 2 1
2 3 1
3 6 2
4 8 3
5 2 3
6 3 4
7 4 4
8 2 3
9 3 4
10 2 2
11 2 2
12 2 2
13 2 3
14 2 1
I need a result set where count of all items per category is displayed such as :
Category No. of Items
1 12
5 1
7 1
Could you someone guide me with this?
I have tried using a CTE :
WITH CTE (CategoryID, CategoryName, ParentID, CategoryParentName)
AS
(
SELECT CategoryID,
CategoryName,
ParentCategoryID,
CategoryName AS CategoryParentName
FROM [dbo].[Category]
WHERE ParentCategoryID IS NULL
AND IsDeleted = 0
UNION ALL
SELECT garages.CategoryID,
garages.CategoryName,
garages.ParentCategoryID,
traces.CategoryName AS CategoryParentName
FROM [dbo].[Category] AS garages
INNER JOIN CTE AS traces ON traces.CategoryID= garages.ParentCategoryID
)
SELECT gr.CategoryID, COUNT(map.CategoryID) AS Total
FROM CTE gr
INNER JOIN [dbo].[CategoryMapping] map ON gr.CategoryID = map.CategoryID
GROUP BY gr.CategoryID
If there are just two levels of categories than there is no need for recursive query
select coalesce(c.ParentCategoryID, c.CategoryID), count(*)
from Category c
join CategoryMapping m on c.CategoryID = m.CategoryID
group by coalesce(c.ParentCategoryID, c.CategoryID)
Obviously, categories without mapping won't be there.
I have the following sql table:
id parent_id
1 null
2 1
3 4
4 8
5 1
6 2
7 6
8 null
How can i get all of child nodes of some specific node?
For example with id = 1:
1 2 5 6 7
with id = 8
8 4 2
I've figured out in another blog, hope it will help other people:
with RECURSIVE cte(id,parent_id) as (
select
id,
parent_id
from forum
where id = 2
UNION ALL
select
forum.id,
forum.parent_id
from forum
inner join cte on forum.parent_id = cte.id
)
select * from cte
My SQL query returns the following result (screenshot):
x y count
----------- ----------- -----------
1 1 10
1 2 2
2 4 3
2 5 5
4 1 5
5 1 8
what i want is x, y should always contain 1 to 5 values, even if the query doesn't return them, in the above scenario x is missing 3. How to add the missing values here that are between 1 & 5.
Thanks in Advance
First you need to generate the desired data. You can use a table of numbers for this. Use CROSS JOIN to generate all possible combinations of two tables. Finally, OUTER JOIN the generated data with your table.
In the following query I have used union to build a list of numbers instead of fetching them from a table. But the idea remains same:
SELECT XList.x, YList.y, #temp.count
FROM (
SELECT 1 AS x UNION ALL
SELECT 2 UNION ALL
SELECT 3 UNION ALL
SELECT 4 UNION ALL
SELECT 5
) AS XList
CROSS JOIN (
SELECT 1 AS y UNION ALL
SELECT 2 UNION ALL
SELECT 3 UNION ALL
SELECT 4 UNION ALL
SELECT 5
) AS YList
LEFT JOIN #temp ON XList.x = #temp.x AND YList.y = #temp.y
Result:
x y count
----------- ----------- -----------
1 1 10
2 1 NULL
3 1 NULL
4 1 5
5 1 8
1 2 2
2 2 NULL
3 2 NULL
4 2 NULL
5 2 NULL
1 3 NULL
2 3 NULL
3 3 NULL
4 3 NULL
5 3 NULL
1 4 NULL
2 4 3
3 4 NULL
4 4 NULL
5 4 NULL
1 5 NULL
2 5 5
3 5 NULL
4 5 NULL
5 5 NULL
You can do it this way:
select t1.x, t2.y, s.count from
(values(1),(2),(3),(4),(5)) t1(x) cross join
(values(1),(2),(3),(4),(5)) t2(y)
left join #temp s on t1.x = s.x and t2.y = s.y
I have two tables:
Routes
ID Description
1 street1
2 street2
3 street3
4 street4
5 street5
Segments
ID RouteID, Progres, LabelStart, LabelEnd
1 1 5 1 A 21 B
2 1 10 2 A 10
3 2 15 3 25
4 2 15 2 20
5 3 20 1 11
6 3 22 4 10
7 4 30 5 11
8 4 31 2 12
I need a sequence with these rules:
table must be ordered by Progress ASC
A column Type is defined and take O if LabelStart and LabelEnd are Odd, E if Even
if two routes have the same progress then the rows are merged in one where
LabelStart is the minimum (among LabelStart Odd and LabelStart Even)
and LabelEnd is the Max, in this case Type takes the value of A (All)
as per example data above the result should be
Sequence
ID RouteID, Progres, LabelStart, LabelEnd Type
1 1 5 1 A 21 B O
2 1 10 2 A 10 E
4 2 15 2 25 A
5 3 20 1 11 O
6 3 22 4 10 E
7 4 30 5 11 O
8 4 31 2 12 E
It is for Postgres 9.2
This was an interesting query to write because you had letters in your LabelStart and LabelEnd fields. I used REGEX_REPLACE to remove those. Then I used a CTE to get the records that had more than one routeid and progress rows.
I think this should do it:
WITH CTE AS (
SELECT
RouteId, Progress
FROM Sequence
GROUP BY RouteId, Progress
HAVING COUNT(DISTINCT Id) > 1
)
SELECT MAX(S.ID) Id,
T.RouteId,
T.Progress,
MIN(regexp_replace(LabelStart, '[^0-9]', '', 'g')) LabelStart,
MAX(regexp_replace(LabelStart, '[^0-9]', '', 'g')) LabelEnd,
'A' as Type
FROM Sequence S
INNER JOIN CTE T ON S.RouteId = T.RouteId AND S.Progress = T.Progress
GROUP BY T.RouteId, T.Progress
UNION
SELECT S.Id,
S.RouteId,
S.Progress,
S.LabelStart,
S.LabelEnd,
CASE
WHEN CAST(regexp_replace(LabelStart, '[^0-9]', '', 'g') as int) % 2 = 0
THEN 'E'
ELSE 'O'
END
FROM Sequence S
LEFT JOIN CTE T ON S.RouteId = T.RouteId AND S.Progress = T.Progress
WHERE T.RouteId IS NULL
ORDER BY Progress ASC
And some sample Fiddle.