I have the following table and content:
CREATE TABLE [dbo].[MyTable](
[PID] [int] NOT NULL,
[CID] [int] NOT NULL
)
INSERT INTO MyTable values (17344,17345)
INSERT INTO MyTable values (17344,17346)
INSERT INTO MyTable values (17272,17273)
INSERT INTO MyTable values (17272,17255)
INSERT INTO MyTable values (17272,17260)
INSERT INTO MyTable values (17272,17274)
INSERT INTO MyTable values (17272,17252)
From this I need to create the following XML layout:
<Item code="17344">
<BOMs>
<BOM code="17344">
<BOMLine type="17345"/>
<BOMLine type="17346"/>
</BOM>
</BOMs>
</Item>
<Item code="17272">
<BOMs>
<BOM code="17272">
<BOMLine type="17273"/>
<BOMLine type="17255"/>
<BOMLine type="17260"/>
<BOMLine type="17274"/>
<BOMLine type="17252"/>
</BOM>
</BOMs>
</Item>
I'm trying to achieve this with the following statement which gives me far too much lines and duplicates:
DECLARE #test XML
SELECT #test =
(SELECT PID '#code',
(SELECT PID as '#code',
(SELECT CID as '#type'
FROM MyTable
FOR XML PATH('BOMLine'), TYPE)
FROM MyTable GROUP BY PID
FOR XML PATH('BOM'), TYPE, ROOT('BOMs'))
FROM MyTable
FOR XML PATH('Item'), TYPE)
select #test
Can anyone help me with this? I'm using SQL Server 2008 by the way.
It would be greatly appreciated.
Best regards,
Wes
You need the group by in the outermost query and you need to make your sub-query correlated with the outer query on PID.
The extra PID in BOM does not need a from clause.
select T1.PID as '#Code',
(
select T1.PID as '#code',
(
select T2.CID as '#type'
from dbo.MyTable as T2
where T1.PID = T2.PID
for xml path('BOMLine'), type
)
for xml path('BOM'), root('BOMs'), type
)
from dbo.MyTable as T1
group by T1.PID
for xml path('Item')
Related
Helle there
I'd like to get a hierarchical data parent / childs. meaning that if i select tje id of the parent, all its chilren will be in the record
Their relations are defined by the parent UUID
I have in a DB the following data :
INSERT INTO dummy_table (Id, parent) VALUES ('0171a28a-578a-49b5-86d5-ff0df54c8e96', '0171a28a-578a-49b5-86d5-ff0df54c8e96')
INSERT INTO dummy_table (Id, parent) VALUES ('0171a28a-5809-4708-9fc9-aeb91c16e560', '0171a28a-578a-49b5-86d5-ff0df54c8e96')
INSERT INTO dummy_table (Id, parent) VALUES ('0171a28a-580b-4de9-b3fa-35f13df27dd5', '0171a28a-5809-4708-9fc9-aeb91c16e560')
INSERT INTO dummy_table (Id, parent) VALUES ('0171a28a-580c-4e6b-8d17-0cc18af24b25', '0171a28a-580b-4de9-b3fa-35f13df27dd5')
INSERT INTO dummy_table (Id, parent) VALUES ('0171a28a-580d-47ee-aa15-92c6727e657e', '0171a28a-580c-4e6b-8d17-0cc18af24b25')
And my request is the following :
WITH RECURSIVE cte AS (
SELECT id, parent FROM dummy_table WHERE id = '0171a28a-578a-49b5-86d5-ff0df54c8e96'
UNION ALL
SELECT dt.id, dt.parent FROM dummy_table dt INNER JOIN cte ON cte.parent = dt.id
)
SELECT * FROM cte;
The problem i have is that it loops and I cannot figure out why.
Any help please ?
Thanks you all
That query goes into a loop because the first row in your data references itself as its parent and so the recursion never stops. Add a check to avoid self-reference and you should be fine
WITH RECURSIVE cte AS (
SELECT id, parent FROM dummy_table WHERE id = '0171a28a-578a-49b5-86d5-ff0df54c8e96'
UNION ALL
SELECT dt.id, dt.parent FROM dummy_table dt INNER JOIN cte ON cte.parent = dt.id and cte.id <> dt.id
)
SELECT * FROM cte;
Another option is setting parent as null in the rows where parent is equal to id
I have a simple data set that looks like this:
Name Code
A A-One
A A-Two
B B-One
C C-One
C C-Two
C C-Three
I want to output it so it looks like this:
Name Code1 Code2 Code3 Code4 Code...n ...
A A-One A-Two
B B-One
C C-One C-Two C-Three
For each of the 'Name' values, there can be an undetermined number of 'Code' values.
I have been looking at various examples of Pivot SQL [including simple Pivot sql and sql using the XML function?] but I have not been able to figure this out - or to understand if it is even possible.
I would appreciate any help or pointers.
Thanks!
Try it like this:
DECLARE #tbl TABLE([Name] VARCHAR(100),Code VARCHAR(100));
INSERT INTO #tbl VALUES
('A','A-One')
,('A','A-Two')
,('B','B-One')
,('C','C-One')
,('C','C-Two')
,('C','C-Three');
SELECT p.*
FROM
(
SELECT *
,CONCAT('Code',ROW_NUMBER() OVER(PARTITION BY [Name] ORDER BY Code)) AS ColumnName
FROM #tbl
)t
PIVOT
(
MAX(Code) FOR ColumnName IN (Code1,Code2,Code3,Code4,Code5 /*add as many as you need*/)
)p;
This line
,CONCAT('Code',ROW_NUMBER() OVER(PARTITION BY [Name] ORDER BY Code)) AS ColumnName
will use a partitioned ROW_NUMBER in order to create numbered column names per code. The rest is simple PIVOT...
UPDATE: A dynamic approach to reflect the max amount of codes per group
CREATE TABLE TblTest([Name] VARCHAR(100),Code VARCHAR(100));
INSERT INTO TblTest VALUES
('A','A-One')
,('A','A-Two')
,('B','B-One')
,('C','C-One')
,('C','C-Two')
,('C','C-Three');
DECLARE #cols VARCHAR(MAX);
WITH GetMaxCount(mc) AS(SELECT TOP 1 COUNT([Code]) FROM TblTest GROUP BY [Name] ORDER BY COUNT([Code]) DESC)
SELECT #cols=STUFF(
(
SELECT CONCAT(',Code',Nmbr)
FROM
(SELECT TOP((SELECT mc FROM GetMaxCount)) ROW_NUMBER() OVER(ORDER BY (SELECT NULL)) FROM master..spt_values) t(Nmbr)
FOR XML PATH('')
),1,1,'');
DECLARE #sql VARCHAR(MAX)=
'SELECT p.*
FROM
(
SELECT *
,CONCAT(''Code'',ROW_NUMBER() OVER(PARTITION BY [Name] ORDER BY Code)) AS ColumnName
FROM TblTest
)t
PIVOT
(
MAX(Code) FOR ColumnName IN (' + #cols + ')
)p;';
EXEC(#sql);
GO
DROP TABLE TblTest;
As you can see, the only part which will change in order to reflect the actual amount of columns is the list in PIVOTs IN() clause.
You can create a string, which looks like Code1,Code2,Code3,...CodeN and build the statement dynamically. This can be triggered with EXEC().
I'd prefer the first approach. Dynamically created SQL is very mighty, but can be a pain in the neck too...
I have the below query that get results from more than one select.
Now I want these to be in a temp table.
Is there any way to insert these into a temp table without creating the table?
I know how to do that for select
Select * into #s --like that
However how to do that one more than one select?
SELECT Ori.[GeoBoundaryAssId], Ori.[FromGeoBoundaryId], Ori.Sort
From [GeoBoundaryAss] As Ori where Ori.[FromGeoBoundaryId] = (select distinct [FromGeoBoundaryId] from inserted )
Union
SELECT I.[GeoBoundaryAssId], I.[FromGeoBoundaryId], I.Sort
From [inserted] I ;
Add INTO after the first SELECT.
SELECT Ori.[GeoBoundaryAssId], Ori.[FromGeoBoundaryId], Ori.Sort
INTO #s
From [GeoBoundaryAss] As Ori where Ori.[FromGeoBoundaryId] = (select distinct [FromGeoBoundaryId] from inserted )
Union
SELECT I.[GeoBoundaryAssId], I.[FromGeoBoundaryId], I.Sort
From [inserted] I ;
Try this,
INSERT INTO #s ([GeoBoundaryAssId], [FromGeoBoundaryId], Sort)
(
SELECT Ori.[GeoBoundaryAssId], Ori.[FromGeoBoundaryId], Ori.Sort
FROM [GeoBoundaryAss] AS Ori WHERE Ori.[FromGeoBoundaryId] in (SELECT DISTINCT [FromGeoBoundaryId] FROM inserted )
UNION
SELECT I.[GeoBoundaryAssId], I.[FromGeoBoundaryId], I.Sort
FROM [inserted] I
)
SELECT
MEM_ID, [C1],[C2]
from
(select
MEM_ID, Condition_id, condition_result
from tbl_GConditionResult
) x
pivot
(
sum(condition_result)
for condition_id in ([C1],[C2])
) p
The above query returns three columns of data. Until runtime I will not know how many columns in the select statement. Is it possible to load the data from the select statement into a dynamically created table? After processing the data from the dynamically created table I want to drop the table.
Thank you for your help.
Smith
Yes, do a SELECT INTO e.g.
SELECT
MEM_ID, [C1],[C2]
into #TEMP
from
(select
MEM_ID, Condition_id, condition_result
from tbl_GConditionResult
) x
pivot
(
sum(condition_result)
for condition_id in ([C1],[C2])
) p
-- Do what you need with the TEMP table
DROP TABLE #TEMP
I have a table with an XML type column. This column contains a dynamic list of attributes that may be different between records.
I am trying to GROUP BY COUNT over these attributes without having to go through the table separately for each attribute.
For example, one record could have attributes A, B and C and the other would have B, C, D then, when I do the GROUP BY COUNT I would get A = 1, B = 2, C = 2 and D = 1.
Is there any straightforward way to do this?
EDIT in reply to Andrew's answer:
Because my knowledge of this construct is superficial at best I had to fiddle with it to get it to do what I want. In my actual code I needed to group by the TimeRange, as well as only select some attributes depending on their name. I am pasting the actual query below:
WITH attributes AS (
SELECT
Timestamp,
N.a.value('#name[1]', 'nvarchar(max)') AS AttributeName,
N.a.value('(.)[1]', 'nvarchar(max)') AS AttributeValue
FROM MyTable
CROSS APPLY AttributesXml.nodes('/Attributes/Attribute') AS N(a)
)
SELECT Datepart(dy, Timestamp), AttributeValue, COUNT(AttributeValue)
FROM attributes
WHERE AttributeName IN ('AttributeA', 'AttributeB')
GROUP BY Datepart(dy, Timestamp), AttributeValue
As a side-note: Is there any way to reduce this further?
WITH attributes AS (
SELECT a.value('(.)[1]', 'nvarchar(max)') AS attribute
FROM YourTable
CROSS APPLY YourXMLColumn.nodes('//path/to/attributes') AS N(a)
)
SELECT attribute, COUNT(attribute)
FROM attributes
GROUP BY attribute
CROSS APPLY is like being able to JOIN the xml as a table. The WITH is needed because you can't have xml methods in a group clause.
Here is a way to get the attribute data into a way that you can easily work with it and reduce the number of times you need to go through the main table.
--create test data
declare #tmp table (
field1 varchar(20),
field2 varchar(20),
field3 varchar(20))
insert into #tmp (field1, field2, field3)
values ('A', 'B', 'C'),
('B', 'C', 'D')
--convert the individual fields from seperate columns to one column
declare #table table(
field varchar(20))
insert into #table (field)
select field1 from #tmp
union all
select field2 from #tmp
union all
select field3 from #tmp
--run the group by and get the count
select field, count(*)
from #table
group by field