I am using HierarchyId in SQL server and I am referring the the article below to to get all the ancestors
https://technet.microsoft.com/en-us/library/bb677212%28v=sql.105%29.aspx
I have following code:
DECLARE #last_child HIERARCHYID
select *
FROM dbo.Geography AS g
WHERE #last_child.GetAncestor(1) = 0x58
SELECT #last_child
I do have a node with id 0x58 in DB and it does have a child. However, #last_child is coming back null constantly for some reason. Am I doing anything wrong?
Ok. I am still not sure what is wrong with the code above. However, I found and alternative method to find all the children for a particular parent node. Code is posted below:
SELECT *
FROM Geography
WHERE GeographyNode.IsDescendantOf(0x58) = 1
Related
Lets say i have this data in my db
/
/1/
/1/1/
/1/2/
/1/2/1/
/2/1/
/2/1/1/
/2/2/1/
I want to get for each row the last child within the hirarchyId
I have tried to use the getdecendent and getancestor but it wont gives me what i need
I have tried getAncestor with negative number thinking maybe it will go from the end but no luck
Is there a built in way to get the value of a specific level from hierarchyID
…
select *, h.GetReparentedValue(isnull(h.GetAncestor(1),h), hierarchyid::GetRoot()/*..or '/' */) as lastnode
from
(
values (cast('/' as hierarchyid)),('/1/'),('/1/2/'), ('/1/2/3/4/5/')
) as v(h);
I have created an Sql table to trace objects' operation history. I have two columns; first one is the self tracing code and second tracing code is the tracing code for the code coming from source object to target. I created this to be able to look up the route of operations through the objects. You can see the tracing sample table below:
I need to create an sql code to query to show all the route in one table. When I first select the self code, it will be the incoming code for previous rows. There may be more than one incoming code to self and I want to be able to trace all. And I want to reach end until my search is null.
I tried select query like below but I am so new sql and need your help.
SELECT [TracingCode.Self],
[TracingCode.Incoming],
[EquipmentNo]
FROM [MKP_PROCESS_PRODUCT_REPORTS].[dbo].[ProductionTracing.Main]
WHERE [TracingCode.Self] = (SELECT [TracingCode.Incoming]
FROM [MKP_PROCESS_PRODUCT_REPORTS].[dbo].[ProductionTracing.Main]
WHERE [TracingCode.Self] = (SELECT [TracingCode.Incoming]
FROM [MKP_PROCESS_PRODUCT_REPORTS].[dbo].[ProductionTracing.Main]
WHERE [TracingCode.Self] = (SELECT [TracingCode.Incoming]
FROM [MKP_PROCESS_PRODUCT_REPORTS].[dbo].[ProductionTracing.Main]
WHERE [TracingCode.Self] = '028.001.19.2.3')));
To do this kind of parent/child thing to any level without explicitly coding all levels you need to use a recursive CTE.
More details here
https://www.red-gate.com/simple-talk/sql/t-sql-programming/sql-server-cte-basics/
Here is some test data and a solution I came up with. Note that three records actually match 028.001.19.2.3
If this doesn't do what you need please explain further with sample data.
DECLARE #Sample TABLE (
TC_Self CHAR(14) NOT NULL,
TC_In CHAR(14) NOT NULL,
EquipmentNo INT NOT NULL
);
INSERT INTO #Sample (TC_Self, TC_In, EquipmentNo)
VALUES
('028.001.19.2.3','026.003.19.2.2',96),
('028.001.19.2.3','026.001.19.2.2',96),
('028.001.19.2.3','026.002.19.2.2',96),
('028.001.19.2.2','026.002.19.2.1',96),
('028.001.19.2.2','026.002.19.2.1',96),
('028.001.19.2.1','026.002.19.1.1',96),
('026.003.19.2.2','024.501.19.2.5',117),
('024.501.19.2.5','024.501.19.2.6',999),
('024.501.19.2.6','024.501.19.2.7',998);
WITH CTE (RecordType, TC_Self, TC_In, EquipmentNo)
AS
(
-- This is the 'root'
SELECT 'Root' RecordType, TC_Self, TC_In, EquipmentNo FROM #Sample
WHERE TC_Self = '028.001.19.2.3'
UNION ALL
SELECT 'Leaf' RecordType, S.TC_Self, S.TC_In, S.EquipmentNo FROM #Sample S
INNER JOIN CTE
ON S.TC_Self = CTE.TC_In
)
SELECT * FROM CTE;
Also please note that most of the time to generate this answer was taken in generating the sample data to use.
In future when asking questions, people are far more likely to help if you post this sample data generation yourself
The scenario is the following -
OrderTable with Columns "OrderId" and "OrderType"
OrderRelationTable with Columns "OrderId" and "CustId"
OrderProcessTable with Columns "OrderId", "OrderType", "CustId", and "ProcessFlag"
The flow goes like this-
Application1 creates the record in OrderTable -> Then pass the record to Application2 by using MQ protocol, Application 2 in this case insert/create the record passed in the OrderRelationTable -> Then a trigger is called in Oracle DB to create the record in OrderProcessTable
Problem
Sometimes the record is not inserted into table 3 OrderProcessTable. Not sure if it is cause by timing or there is something that is not correct with the trigger?
Application1 Code
boolean updated = false;
/** JDBC prepare statement execution insert into OrderTable in Java**/
int rowCount = ps.executeUpdate();
if(rowCount>0){
updated=true;
}
log.log("updated flag:"+updated);
/** I am able to see the log shows the flag is true, and recored inserted into OrderTable **/
Application2 Code
This doesn't really matter much assuming that it is some Java JDBC code that does the insert into OrderRelationTable and it is successful.
The Trigger
Assuming the syntax is correct.
CREATE OR REPLACE TRIGGER INSERTINTOOrderProcessTable
AFTER INSERT ON OrderRelationTable
FOR EACH ROW DECLEAR
v_order_type := null;
BEGIN
SELECT OrderType INTO v_order_type FROM OrderTable
WHERE OrderId = :new.OrderId
AND OrderType IS NOT NULL
AND rownum=1;
IF v_order_type IS NOT NULL THEN
INSERT INTO OrderProcessTable VALUES (:new.OrderId, v_order_type, :new.CustId, 'N');
END IF;
END;
Questions -
After the Application 1 Code is executed is guaranteed DB will have the OrderTable record avaliable for SELECT statement? (Assume that updated flag is true)
Is there a timing issue with the app code and trigger? for example when trigger calls the SELECT statement from OrderTable? (of course the order id is matching in the OrderRelationTable and OrderTable)
Basically right now my problem is that sometimes (rarely) the record is not inserted into OrderProcessTable via the trigger even though it should (Order Type is not null)? Any idea?
There's no timing issue, as far as I can tell.
As of trigger code: what is the purpose of and rownum = 1 condition? I'm not saying that it is wrong, I'm just asking. Do you expect several rows to be returned by that query? If so, is that a legal situation? Wouldn't you rather handle it with the WHEN TOO_MANY_ROWS exception handler (i.e. instead of using the ROWNUM condition)?
What happens if SELECT returns nothing? It raises then NO_DATA_FOUND exception and trigger fails and certainly doesn't insert anything. Is it propagated so that someone (human being) or something (error logging procedure) sees / catches it so that you'd know that something went wrong?
And, of course, the fact that V_ORDER_TYPE remains NULL which causes INSERT to fail (as P. Salmon already suggested).
I have an xml column called OrderXML in an Orders table...
there is an XML XPath like this in the table...
/Order/InternalInformation/InternalOrderBreakout/InternalOrderHeader/InternalOrderDetails/InternalOrderDetail
There InternalOrderDetails contains many InternalOrderDetail nodes like this...
<InternalOrderDetails>
<InternalOrderDetail>
<Item_Number>FBL11REFBK</Item_Number>
<CountOfNumber>10</CountOfNumber>
<PriceLevel>FREE</PriceLevel>
</InternalOrderDetail>
<InternalOrderDetail>
<Item_Number>FCL13COTRGUID</Item_Number>
<CountOfNumber>2</CountOfNumber>
<PriceLevel>NONFREE</PriceLevel>
</InternalOrderDetail>
</InternalOrderDetails>
My end goal is to modify the XML in the OrderXML column IF the Item_Number of the node contains COTRGUID (like '%COTRGUID') AND the PriceLevel=NONFREE. If that condition is met I want to change the PriceLevel column to equal FREE.
I am having trouble with both creating the xpath expression that finds the correct nodes (using OrderXML.value or OrderXML.exist functions) and updating the XML using the OrderXML.modify function).
I have tried the following for the where clause:
WHERE OrderXML.value('(/Order/InternalInformation/InternalOrderBreakout/InternalOrderHeader/InternalOrderDetails/InternalOrderDetail/Item_Number/node())[1]','nvarchar(64)') like '%13COTRGUID'
That does work, but it seems to me that I need to ALSO include my second condition (PriceLevel=NONFREE) in the same where clause and I cannot figure out how to do it. Perhaps I can put in an AND for the second condition like this...
AND OrderXML.value('(/Order/InternalInformation/InternalOrderBreakout/InternalOrderHeader/InternalOrderDetails/InternalOrderDetail/PriceLevel/node())[1]','nvarchar(64)') = 'NONFREE'
but I am afraid it will end up operating like an OR since it is an XML query.
Once I get the WHERE clause right I will update the column using a SET like this:
UPDATE Orders SET orderXml.modify('replace value of (/Order/InternalInformation/InternalOrderBreakout/InternalOrderHeader/InternalOrderDetails/InternalOrderDetail/PriceLevel[1]/text())[1] with "NONFREE"')
However, I ran this statement on some test data and none of the XML columns where updated (even though it said zz rows effected).
I have been at this for several hours to no avail. Help is appreciated. Thanks.
if you don't have more than one node with your condition in each row of Orders table, you can use this:
update orders set
data.modify('
replace value of
(
/Order/InternalInformation/InternalOrderBreakout/
InternalOrderHeader/InternalOrderDetails/
InternalOrderDetail[
Item_Number[contains(., "COTRGUID")] and
PriceLevel="NONFREE"
]/PriceLevel/text()
)[1]
with "FREE"
');
sql fiddle demo
If you could have more than one node in one row, there're a several possible solutions, none of each is really elegant, sadly.
You can reconstruct all xmls in table - sql fiddle demo
or you can do your updates in the loop - sql fiddle demo
This may get you off the hump.
Replace #HolderTable with the name of your table.
SELECT T2.myAlias.query('./../PriceLevel[1]').value('.' , 'varchar(64)') as MyXmlFragmentValue
FROM #HolderTable
CROSS APPLY OrderXML.nodes('/InternalOrderDetails/InternalOrderDetail/Item_Number') as T2(myAlias)
SELECT T2.myAlias.query('.') as MyXmlFragment
FROM #HolderTable
CROSS APPLY OrderXML.nodes('/InternalOrderDetails/InternalOrderDetail/Item_Number') as T2(myAlias)
EDIT:
UPDATE
#HolderTable
SET
OrderXML.modify('replace value of (/InternalOrderDetails/InternalOrderDetail/PriceLevel/text())[1] with "MyNewValue"')
WHERE
OrderXML.value('(/InternalOrderDetails/InternalOrderDetail/PriceLevel)[1]', 'varchar(64)') = 'FREE'
print ##ROWCOUNT
Your issue is the [1] in the above.
Why did I put it there?
Here is a sentence from the URL listed below.
Note that the target being updated must be, at most, one node that is explicitly specified in the path expression by adding a "[1]" at the end of the expression.
http://msdn.microsoft.com/en-us/library/ms190675.aspx
EDIT.
I think I've discovered the the root of your frustration. (No fix, just the problem).
Note below, the second query works.
So I think the [1] is some cases is saying "only ~~search~~ the first node".....and not (as you and I were hoping)...... "use the first node..after you find a match".
UPDATE
#HolderTable
SET
OrderXML.modify('replace value of (/InternalOrderDetails/InternalOrderDetail/PriceLevel/text())[1] with "MyNewValue001"')
WHERE
OrderXML.value('(/InternalOrderDetails/InternalOrderDetail/PriceLevel[text() = "NONFREE"])[1]', 'varchar(64)') = 'NONFREE'
/* and OrderXML.value('(/InternalOrderDetails/InternalOrderDetail/Item_Number)[1]', 'varchar(64)') like '%COTRGUID' */
UPDATE
#HolderTable
SET
OrderXML.modify('replace value of (/InternalOrderDetails/InternalOrderDetail/PriceLevel/text())[1] with "MyNewValue002"')
WHERE
OrderXML.value('(/InternalOrderDetails/InternalOrderDetail/PriceLevel[text() = "FREE"])[1]', 'varchar(64)') = 'FREE'
Try this :
;with InternalOrderDetail as (SELECT id,
Tbl.Col.value('Item_Number[1]', 'varchar(40)') Item_Number,
Tbl.Col.value('CountOfNumber[1]', 'int') CountOfNumber,
case
when Tbl.Col.value('Item_Number[1]', 'varchar(40)') like '%COTRGUID'
and Tbl.Col.value('PriceLevel[1]', 'varchar(40)')='NONFREE'
then 'FREE'
else
Tbl.Col.value('PriceLevel[1]', 'varchar(40)')
end
PriceLevel
FROM (select id ,orderxml from demo)
as a cross apply orderxml.nodes('//InternalOrderDetail')
as
tbl(col) ) ,
cte_data as(SELECT
ID,
'<InternalOrderDetails>'+(SELECT ITEM_NUMBER,COUNTOFNUMBER,PRICELEVEL
FROM InternalOrderDetail
where ID=Results.ID
FOR XML AUTO, ELEMENTS)+'</InternalOrderDetails>' as XML_data
FROM InternalOrderDetail Results
GROUP BY ID)
update demo set orderxml=cast(xml_data as xml)
from demo
inner join cte_data on demo.id=cte_data.id
where cast(orderxml as varchar(2000))!=xml_data;
select * from demo;
SQL Fiddle
I have handled following cases :
1. As required both where clause in question.
2. It will update all <Item_Number> like '%COTRGUID' and <PriceLevel>= NONFREE in one
node, not just the first one.
It may require minor changes for your data and tables.
This is a followup post to this post. I am writing an accounting system backed by an h2 database. The tree of accounts is stored in the ACCOUNTS table, with the PARENT_ID column storing the links in the tree.
To get the path to a given node in the tree, I have the following stored procedure:
public static Long[] getAncestorPKs(Long id)
whose job is to produce an array of integers, being the PARENT_ID values between the given node and the root of the tree. Let's imagine it is defined like this (because I have tried this and I get the same error):
public static Long[] getAncestorPKs(Long id)
{
return new Long[]{new Long(1), new Long(2), new Long(3)};
}
It is properly registered in the database and I can call it from within a SQL query. My problem is that h2 seems to be unable to deal with the return value: if I use it like this:
SELECT ID FROM ACCOUNTS WHERE ID IN (ANCESTOR_PKS(5))
then I get the following error:
Data conversion error converting "(1, 2, 3)"; SQL statement:
SELECT ID FROM ACCOUNTS WHERE ID IN (ANCESTOR_PKS(5)) [22018-167]
If, instead, I send the following to the database:
SELECT ID FROM ACCOUNTS WHERE ID IN (1, 2, 3)
I get back a result set with 3 rows, containing the three integers (exactly what I expect).
I really can't see what is the problem here! I am returning an array of Longs, which are to be used in comparing against a column which contains BIGINTS. Why is h2 refusing to convert this array? I have tried making the return value be Object[], because the h2 documentation is not entirely clear whether this is required on the return side as well as on the call side, but that makes no difference at all. I'm just banging my head against a brick wall here. This ain't rocket science! Surely someone has written similar code before?
Many thanks in advance, before I go mad!
If the method returns an array of objects, then for the database this is one value of data type ARRAY. And not a table with 3 rows. But of course you don't use the data type ARRAY in your table, you use INT or BIGINT. So your query is incorrect.
Either the method needs to return a ResultSet, or you need to convert the array value to a table. To do that, you could use the function TABLE(..) as follows:
select x from table(x bigint = getAncestorPKs(1));
So what you could do is:
drop table accounts;
create table accounts(id int);
insert into accounts values(1), (2), (10), (20);
drop alias getAncestorPKs;
create alias getAncestorPKs as 'Long[] getAncestorPKs(Long id) {
return new Long[]{new Long(1), new Long(2), new Long(3)};
}';
select * from accounts where id in
(select x from table(x bigint = getAncestorPKs(1)));