Related
I have a table containing three trees:
T1 T2 T3 T4
-- -- -- --
A F B H
| | | | | | |
B C B C A C I
| | | |
D E D B
| |
G J
I'd like to be able to get the distinct nodes sitting under a specific node value.
So for B that'd be D, E, G, D, A, C and J where the distinct is A, C, D, E, G, J
declare #t table (t_id int, parent_t_id int, tree varchar(2), item varchar)
insert into #t
select 1, 0, 'T1', 'A' union
select 2, 1, 'T1', 'B' union
select 3, 1, 'T1', 'C' union
select 4, 2, 'T1', 'D' union
select 5, 2, 'T1', 'E' union
select 5, 4, 'T1', 'G' union
select 6, 0, 'T2', 'F' union
select 7, 6, 'T2', 'B' union
select 8, 6, 'T2', 'C' union
select 9, 7, 'T2', 'D' union
select 10, 0, 'T3', 'B' union
select 11, 10, 'T3', 'A' union
select 12, 10, 'T3', 'C' union
select 13, 0, 'T4', 'H' union
select 14, 13, 'T4', 'I' union
select 15, 14, 'T4', 'B' union
select 16, 15, 'T4', 'J'
select * from #t
I suspect a CTE is required?
try this:
;with cte as
(
Select t1.* From #t t1
JOIN #t t2 on t1.parent_t_id=t2.t_id AND t1.tree=t2.tree
Where t2.item =#Item
Union All
Select t1.* From #t t1
JOIN cte t2 on t1.parent_t_id=t2.t_id AND t1.tree=t2.tree
)
Select DISTINCT Item FROM cte
Yes, CTE can be an option
SELECT * FROM #t ORDER BY t_id
;WITH myCTE (Id, ParentId,Item)
AS
(SELECT t_Id ,Parent_t_Id ,Item
FROM #t
UNION ALL
SELECT t_Id ,Parent_t_Id ,t1.Item
FROM #t t1
INNER JOIN myCTE tmp ON tmp.ParentId = t1.t_Id
)
SELECT DISTINCT * FROM myCTE ORDER BY parentId
I need to update my Result column values for the entire user to yes if the user did make 4 consecutive purchases without receiving a bonus in between. How can this be done. Please see my code below.....
-- drop table #Test
CREATE TABLE #Test (UserID int, TheType VARCHAR(10), TheDate DATETIME, Result VARCHAR(10))
INSERT INTO #Test
SELECT 1234, 'Bonus', GETDATE(), NULL
UNION
SELECT 1234, 'Purchase', GETDATE()-1, NULL
UNION
SELECT 1234, 'Purchase', GETDATE()-2, NULL
UNION
SELECT 1234, 'Purchase', GETDATE()-3, NULL
UNION
SELECT 1234, 'Purchase', GETDATE()-4, NULL
UNION
SELECT 1234, 'Bonus', GETDATE()-5, NULL
UNION
SELECT 1234, 'Purchase', GETDATE()-6, NULL
UNION
SELECT 1234, 'Bonus', GETDATE()-7, NULL
SELECT * FROM #Test ORDER BY TheDate
Again, please note that the purchases need to be consecutive (By TheDate)
You can as the below:
;WITH CTE1
AS
(
SELECT
ROW_NUMBER() OVER (ORDER BY TheDate) RowId,
ROW_NUMBER() OVER (PARTITION BY UserID,TheType ORDER BY TheDate) PurchaseRowId,
*
FROM #Test
), CTE2
AS
(
SELECT
MIN(A.RowId) MinId,
MAX(A.RowId) MaxId
FROM
CTE1 A
GROUP BY
A.TheType,
A.RowId - A.PurchaseRowId
)
SELECT
A.UserID ,
A.TheType ,
A.TheDate ,
CASE WHEN B.MinId IS NULL THEN NULL ELSE 'YES' END Result
FROM
CTE1 A LEFT JOIN
CTE2 B ON A.RowId >= B.MinId AND A.RowId <= B.MaxId AND (B.MaxId - B.MinId) > 2
--AND A.TheType = 'Purchase'
ORDER BY A.TheDate
Result:
UserID TheType TheDate Result
----------- ---------- ----------------------- - ------
1234 Bonus 2017-06-06 11:06:03.130 NULL
1234 Purchase 2017-06-07 11:06:03.130 NULL
1234 Bonus 2017-06-08 11:06:03.130 NULL
1234 Purchase 2017-06-09 11:06:03.130 YES
1234 Purchase 2017-06-10 11:06:03.130 YES
1234 Purchase 2017-06-11 11:06:03.130 YES
1234 Purchase 2017-06-12 11:06:03.130 YES
1234 Bonus 2017-06-13 11:06:03.130 NULL
First you have to derive the column group and then group by that (having = 4) and inner join with the original table.
drop table if exists #Test;
create table #Test
(
UserID int
, TheType varchar(10)
, TheDate date
, Result varchar(10)
);
insert into #Test
select 1234, 'Bonus', getdate(), null
union
select 1234, 'Purchase', getdate() - 1, null
union
select 1234, 'Purchase', getdate() - 2, null
union
select 1234, 'Purchase', getdate() - 3, null
union
select 1234, 'Purchase', getdate() - 4, null
union
select 1234, 'Bonus', getdate() - 5, null
union
select 1234, 'Purchase', getdate() - 6, null
union
select 1234, 'Bonus', getdate() - 7, null;
drop table if exists #temp;
select
*
, lag(t.TheDate, 1) over ( order by t.TheDate ) as Lag01
, lag(t.TheType, 1) over ( order by t.TheDate ) as LagType
into
#temp
from #Test t;
with cteHierarchy
as
(
select
UserID
, TheType
, TheDate
, Result
, Lag01
, t.TheDate as Root
from #temp t
where t.LagType <> t.TheType
union all
select
t.UserID
, t.TheType
, t.TheDate
, t.Result
, t.Lag01
, cte.Root as Root
from #temp t
inner join cteHierarchy cte on t.Lag01 = cte.TheDate
and t.TheType = cte.TheType
)
update test
set
Result = 4
from (
select
t.Root
, count(t.UserID) as Cnt
, t.UserID
from cteHierarchy t
group by t.UserID, t.Root
having count(t.UserID) = 4
) tt
inner join #Test test on tt.UserID = test.UserID
select * from #Test t
order by t.TheDate;
I have requirement to copy previous rows values to next all rows in sql server.
With LAG function, I can achieve this one only for next row. but I have to copy more than rows.
Here is sample example :
Query:
SELECT
t1.ID,
t1.CustID,
t2.ID,
t2.CustID,
t2.Flag,
COALESCE(
t2.Flag,
(
SELECT TOP 1 l.Flag
FROM TBL2 l
WHERE l.CustID = t1.CustID AND l.ID < t1.ID
ORDER BY l.ID desc
)) as 'Final'
FROM
TBL1 t1
LEFT OUTER JOIN TBL2 t2 ON t2.ID = t1.ID AND t2.CustID = t1.CustID
ORDER BY
t1.CustID,
t1.ID desc
Setup:
CREATE TABLE TBL1 (ID int, CustID int)
GO
CREATE TABLE TBL2 (ID int, CustID int, Flag bit)
GO
INSERT INTO TBL1 (ID, CustID)
SELECT 1, 11 UNION ALL
SELECT 1, 12 UNION ALL
SELECT 1, 13 UNION ALL
SELECT 1, 14 UNION ALL
SELECT 1, 15 UNION ALL
SELECT 1, 16 UNION ALL
SELECT 1, 17 UNION ALL
SELECT 2, 11 UNION ALL
SELECT 2, 12 UNION ALL
SELECT 2, 13 UNION ALL
SELECT 2, 14 UNION ALL
SELECT 2, 15 UNION ALL
SELECT 2, 16 UNION ALL
SELECT 2, 17 UNION ALL
SELECT 3, 11 UNION ALL
SELECT 3, 12 UNION ALL
SELECT 3, 13 UNION ALL
SELECT 3, 14 UNION ALL
SELECT 3, 15 UNION ALL
SELECT 3, 16 UNION ALL
SELECT 3, 17 UNION ALL
SELECT 4, 11 UNION ALL
SELECT 4, 12 UNION ALL
SELECT 4, 13 UNION ALL
SELECT 4, 14 UNION ALL
SELECT 4, 15 UNION ALL
SELECT 4, 16 UNION ALL
SELECT 4, 17
GO
INSERT INTO TBL2 (ID, CustID, Flag)
SELECT 1, 11, 0 UNION ALL
SELECT 1, 12, 1 UNION ALL
SELECT 1, 13, 1 UNION ALL
SELECT 1, 14, 0 UNION ALL
SELECT 1, 15, 0 UNION ALL
SELECT 1, 16, 0 UNION ALL
SELECT 1, 17, 1 UNION ALL
SELECT 2, 11, 1 UNION ALL
SELECT 2, 13, 0 UNION ALL
SELECT 2, 14, 1 UNION ALL
SELECT 2, 15, 1 UNION ALL
SELECT 2, 17, 0 UNION ALL
SELECT 3, 13, 1 UNION ALL
SELECT 3, 15, 0 UNION ALL
SELECT 3, 17, 1 UNION ALL
SELECT 4, 12, 0 UNION ALL
SELECT 4, 17, 0
GO
You can try this:
SELECT *
,ISNULL(b.flag,(MAX(b.flag) OVER (PARTITION BY a.[custid] ORDER BY b.[id] DESC ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW)))
FROM #TBL1 A
LEFT JOIN #TBL2 B
ON A.id = b.id
AND A.custid = b.custid
ORDER BY a.[custid] ASC, a.[id] DESC
Here is the sample data:
DECLARE #TBL1 TABLE
(
[id] TINYINT
,[custid] TINYINT
);
DECLARE #TBL2 TABLE
(
[id] TINYINT
,[custid] TINYINT
,[flag] TINYINT
);
INSERT INTO #TBL1([id], [custid])
VALUES
(1,11)
,(1,12)
,(1,13)
,(1,14)
,(1,15)
,(1,16)
,(1,17)
,(2,11)
,(2,12)
,(2,13)
,(2,14)
,(2,15)
,(2,16)
,(2,17)
,(3,11)
,(3,12)
,(3,13)
,(3,14)
,(3,15)
,(3,16)
,(3,17)
,(4,11)
,(4,12)
,(4,13)
,(4,14)
,(4,15)
,(4,16)
,(4,17);
INSERT INTO #TBL2 ([id], [custid], [flag])
VALUES (1,11,0)
,(1,12,1)
,(1,13,1)
,(1,14,0)
,(1,15,0)
,(1,16,0)
,(1,17,1)
,(2,11,1)
,(2,13,0)
,(2,14,1)
,(2,15,1)
,(2,17,0)
,(3,13,1)
,(3,15,0)
,(3,17,1)
,(4,12,0)
,(4,17,0)
You can use a LEFT JOIN ,a CASE EXPRESSION and a correlated query :
SELECT t.id,t.custid,s.id,s.custid,
COALESCE(s.flag,(SELECT TOP 1 ss.flag FROM tbl2 ss
WHERE ss.custid = t.custid and ss.id < t.id
ORDER BY ss.id DESC)) as flag
FROM Tbl1 t
LEFT JOIN tbl2 s
ON(t.custid = s.custid and s.id = t.id)
My current understanding is that it is impossible to have several aggregates - such as an additional SUM(Measure2) in the following example:
IF OBJECT_ID('tempdb..#Dim1') IS NOT NULL DROP TABLE #Dim1
IF OBJECT_ID('tempdb..#Dim2') IS NOT NULL DROP TABLE #Dim2
IF OBJECT_ID('tempdb..#Facts') IS NOT NULL DROP TABLE #Facts
CREATE TABLE #Dim1
(
Id INT IDENTITY(1,1),
DimName NVARCHAR(100)
)
CREATE TABLE #Dim2
(
Id INT IDENTITY(1,1),
DimName NVARCHAR(100)
)
CREATE TABLE #Facts
(
Id INT IDENTITY(1,1),
Dim1Id INT,
Dim2Id INT,
Measure1 FLOAT,
Measure2 FLOAT
)
INSERT INTO #Dim1
SELECT N'Dim1Name1'
UNION ALL
SELECT N'Dim1Name2'
UNION ALL
SELECT N'Dim1Name3'
INSERT INTO #Dim2
SELECT N'Dim2Name1'
UNION ALL
SELECT N'Dim2Name2'
INSERT INTO #Facts
SELECT 1, 2, 2, 10
UNION ALL
SELECT 1, 2, 10, 3
UNION ALL
SELECT 1, 1, 1, 56
UNION ALL
SELECT 2, 1, 5, 4
UNION ALL
SELECT 2, 2, 4, 4
UNION ALL
SELECT 3, 1, 4, 1
UNION ALL
SELECT 3, 1, 20, 56
;WITH CTE1 AS
(
SELECT
Facts.Measure1,
Dimensions1.DimName AS DimName1,
Dimensions2.DimName AS DimName2
FROM #Facts AS Facts
INNER JOIN #Dim1 AS Dimensions1 ON Facts.Dim1Id = Dimensions1.Id
INNER JOIN #Dim2 AS Dimensions2 ON Facts.Dim2Id = Dimensions2.Id
)
SELECT
*
FROM CTE1
PIVOT
(
SUM(Measure1)
FOR DimName2
IN([Dim2Name1], [Dim2Name2])
) AS X;
Is this really the case and do I have to use the old 'MAX CASE' approach for these scenarios?
Is this helpful?
;WITH CTE1 AS
(
SELECT
Facts.Measure1,
Facts.Measure2,
Dimensions1.DimName AS DimName1,
Dimensions2.DimName AS DimName2
FROM #Facts AS Facts
INNER JOIN #Dim1 AS Dimensions1 ON Facts.Dim1Id = Dimensions1.Id
INNER JOIN #Dim2 AS Dimensions2 ON Facts.Dim2Id = Dimensions2.Id
)
SELECT
DimName1,
CAST(SUBSTRING(X.[Dim2Name1], 1, 10) AS INT) Dim2Name1Measure1,
CAST(SUBSTRING(X.[Dim2Name1], 11, 10) AS INT) Dim2Name1Measure2,
CAST(SUBSTRING(X.[Dim2Name2], 1, 10) AS INT) Dim2Name2Measure1,
CAST(SUBSTRING(X.[Dim2Name2], 11, 10) AS INT) Dim2Name2Measure2
FROM
(
SELECT
CAST(SUM(Measure1) AS CHAR(10)) + CAST(SUM(Measure2) AS CHAR(10)) AS Combined,
DimName1,
DimName2
FROM CTE1
GROUP BY
DimName1,
DimName2
) S
PIVOT
(
MAX(Combined)
FOR DimName2
IN([Dim2Name1], [Dim2Name2])
) AS X;
I have an update that has to be made. And Im really stuck.
This is a classic hierarchical employee table question, but with a twist.
Please look at this tree of users:
employees
(Completely unrelated to my problem, just something I found with google pictures)
Lets assume the following Id's:
RM1: EmpId 1, ParentId null
AM1: EmpId 2, ParentId 1
MGR1: EmpId 3, ParentId 2
MGR2: EmpId 4, ParentId 2
EMP1: EmpId 5, ParentId 3
EMP2: EmpId 6, ParentId 3
EMP3: EmpId 7, ParentId 4
EMP4: EmpId 8, ParentId 4
I need to add another column, lets call it parentSpecialId.
This id is the id of the user below root (AM1 and AM2).
All users below AM1 and AM2 should have the parentSpecialId set to the user below root.
Which gives us:
RM1: EmpId 1, ParentId null parentSpecialId null
AM1: EmpId 2, ParentId 1 parentSpecialId null
MGR1: EmpId 3, ParentId 2 parentSpecialId 2
MGR2: EmpId 4, ParentId 2 parentSpecialId 2
EMP1: EmpId 5, ParentId 3 parentSpecialId 2
EMP2: EmpId 6, ParentId 3 parentSpecialId 2
EMP3: EmpId 7, ParentId 4 parentSpecialId 2
EMP4: EmpId 8, ParentId 4 parentSpecialId 2
All I have is this CTE which gives me a result set with AM1 and AM2.
So I need to traverse all way down to EMPX and update parentSpecialId with Id 2 for
AM1 and the same for all users for AM2. Of course, it needs to by dynamic, in real life I have 12 of these users below root.
Does it make sense?
Here is my CTE:
WITH EmpsCTE AS
(
SELECT id, parent, name, 0 AS EmployeeLevel
FROM Employee
WHERE parent = 0
UNION ALL
SELECT e.id, e.parent, e.name, EmployeeLevel + 1
FROM EmpsCTE AS p
JOIN Employee AS e ON e.parent = p.id
)
SELECT id, parent, name, EmployeeLevel
From EmpsCTE where EmployeeLevel = 1
Oh, and I use Sql server 2008 R2
Sample data:
declare #T table
(
Name varchar(10),
EmpId int,
ParentId int,
ParentSpecialID int
);
insert into #T(Name, EmpId, ParentId) values
('RM1', 1, null),
('AM1', 2, 1),
('MGR1', 3, 2),
('MGR2', 4, 2),
('EMP1', 5, 3),
('EMP2', 6, 3),
('EMP3', 7, 4),
('EMP4', 8, 4);
Update statement:
with C as
(
select T3.EmpId,
T2.EmpId as ParentSpecialId
from #T as T1
inner join #T as T2
on T1.EmpId = T2.ParentId
inner join #T as T3
on T2.EmpId = T3.ParentId
where T1.ParentId is null
union all
select T.EmpId,
C.ParentSpecialId
from #T as T
inner join C
on T.ParentId = C.EmpId
)
update T
set ParentSpecialId = C.ParentSpecialId
from #T as T
inner join C
on T.EmpId = C.EmpId
To handle a tree of arbitrary depth:
declare #T table ( Name varchar(16), EmpId int, ParentId int );
insert into #T(Name, EmpId, ParentId) values
('RM1', 1, null),
('AM1', 2, 1),
('MGR1', 3, 2),
('MGR2', 4, 2),
('EMP1', 5, 3),
('EMP2', 6, 3),
('EMP3', 7, 4),
('EMP4', 8, 4),
('AM2', 9, 1),
('MGR3', 10, 9),
('EMP5', 11, 10),
('Brown Noser', 12, 11),
('Intern', 13, 12),
('Coop', 14, 13),
('Nephew', 15, 14),
('Contractor', 16, 15);
; with CTE as (
-- Start with the root(s).
select Name, EmpId, ParentId, 0 as Depth, Cast(NULL as Int) as parentSpecialId
from #T
where ParentId is NULL
union all
-- Add the direct reports one layer at a time.
select T.Name, T.EmpId, T.ParentId, CTE.Depth + 1, case when CTE.Depth = 1 then T.ParentId else CTE.parentSpecialId end
from CTE inner join
#T as T on T.ParentId = CTE.EmpID
where T.ParentId = CTE.EmpId
)
select *,
( select Name from CTE as R where R.EmpId = CTE.ParentId ) as ReportsTo,
( select Name from CTE as SC where SC.EmpId = CTE.parentSpecialId ) as SubCommander
from CTE
order by Depth, Name
With thanks to Mikael Eriksson for setting up the sample data!