Parent Child Relationship Column Hint?
Feb 22, 2007
I've got a dilemma which I hope someone has a solution to.
Let's say we're building a data mining model to predict aircraft reliability. In the training table we've got a column (among many others) with a unique aircraft ID, and then a column for the type (737,747) and then a column for the series (100,200,300). I.E. A 737-800 series would be "737" and "800".
There is in essence a parent-child relationship between these 2 columns. 737's should share a common set of reliability factors, and then those factors might be further defined by the series number (for instance, the 737 might have very reliable radar except for the 500 series). The series is analogous to what model year a car is. What I want to make sure doesn't happen is for the system to correlate a 747-400 and a 737-400 because they are the same series. They are totally independent if the model number is different.
My only idea was to merge the columns and have a single value "737-100". But it would seem then that the model won't have any idea that a "737-100" and "737-200" should have a lot more in common than a "737-100" because the values will be completely different.
I was hoping to find some sort of parent-child hint in the column properties but found none.
What solutions have other people tried? It sure seems that there should be an elegant solution for something like, but I'm missing it.
Geof
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Mar 23, 2014
Below is my sample data of my table named "Groups"
Code:
with Groups as (
select 1 as GroupId,'Oracle' as GroupName,0 as IdParentGroup union all
select 2 as GroupId,'Microsoft' as GroupName,0 as IdParentGroup union all
select 3 as GroupId,'IBM' as GroupName,0 as IdParentGroup union all
select 4 as GroupId,'SunMicrosystem' as GroupName,1 as IdParentGroup union all
select 5 as GroupId,'peoplesoft' as GroupName,1 as IdParentGroup union all
select 6 as GroupId,'mysql' as GroupName,1 as IdParentGroup union all
select 7 as GroupId,'Nokia' as GroupName,2 as IdParentGroup union all
select 8 as GroupId,'EShop' as GroupName,2 as IdParentGroup union all
select 9 as GroupId,'Meiosys' as GroupName,3 as IdParentGroup union all
select 10 as GroupId,'UrbanCode' as GroupName,3 as IdParentGroup )
select * from groups;
Expected result:
Code:
with ExpectedResult as (
select 'Oracle' as GroupName,'SunMicrosystem' as SubGroup union all
select '' as GroupName,'peoplesoft' as SubGroup union all
select '' as GroupName,'mysql' as SubGroup union all
select 'Microsoft' as GroupName,'Nokia' as SubGroup union all
select '' as GroupName,'EShop' as SubGroup union all
select 'IBM' as GroupName,'Meiosys' as SubGroup union all
select '' as GroupName,'UrbanCode' as SubGroup )
select * from ExpectedResult;
some sample query to how to achieve this parent-child has the same table.
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Aug 3, 1999
Hi!
I am new to SQL Server and am starting to learn. Here is an issue I have not solved yet:
If I have a table with an CompanyID, Parent ID, Child ID and CompanyName and given a CompanyID, how would I (using a stored procedure I imagine) provide a Tree Structure of the company and all it's descendants?
Also, how would I show it's ancestry?
Company1
subsidary1 > subsidary1's child
subsidary2 > it's children, etc...etc...
I hope I phrased the questions right.
Thanks for your help!
Scott
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Mar 23, 2014
Below is my sample data of my table named "Groups"
with Groups as (
select 1 as GroupId,'Oracle' as GroupName,0 as IdParentGroup union all
select 2 as GroupId,'Microsoft' as GroupName,0 as IdParentGroup union all
select 3 as GroupId,'IBM' as GroupName,0 as IdParentGroup union all
select 4 as GroupId,'SunMicrosystem' as GroupName,1 as IdParentGroup union all
[Code] ....
Expected result:
with ExpectedResult as (
select 'Oracle' as GroupName,'SunMicrosystem' as SubGroup union all
select '' as GroupName,'peoplesoft' as SubGroup union all
select '' as GroupName,'mysql' as SubGroup union all
[Code] ....
How to achieve this parent-child has the same table.
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Oct 18, 2006
Hi
I need to read a file and write parent/child relationship rows. I cannot seem to fugure out how I can generate keys that I an use for the relationship.
I looked at using a variable, but have no joy - I cannot instantiate the variable and it errors - notsure wy.
I also looked to see if I can write to a DB table that maintains key id, but not sure how to do that.
I alo thought of setting up the parent table key to be auto-increment,but canot see how I can read this so that I can us it in the child row inserts.
Help will be really appriciated
Thanks in advance.
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Jun 15, 2006
Supose I have two records in a parent-child relationsuip (actually I have many more such records). Does SSIS offer any support ask for inserting one record into the parent table, the other into the child table, and updating the foreign key of the child to point to the parent?
TIA,
Barkingdog
P.S. I have to do just this as part of the datawarehouse test I'm running. Seems like a common task but I don't recall anything in SSIS addressing the issue.
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Nov 13, 2006
I am trying to insert data into two tables with a SSIS package. One table has a foreign key relationship to the other table's primary key. When I try to run the package, the package will just seems to hang up in bids. I have found two ways around the issue but I don't like either approach. Is there a way to set which table gets insert first?
If I uncheck the check constraints option on the child table, the package will run very quickly but this option alters the child table and basically disables the constraint. I don't like this option because it is altering the database.
The second approach is to set the commit level on both tables to say 10,000 and make sure that the multicast component has the first output path moved to the parent table. I don't like this option because I am not sure if the records are backed out if the package should abend after records have been committed.
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Jul 18, 2015
I am working on a query to generate parent child hierarchy from a table.
Table has below records.
--===== If the test table already exists, drop it
IF OBJECT_ID('TempDB..#mytable','U') IS NOT NULL
DROP TABLE #mytable
--===== Create the test table with
CREATE TABLE #mytable
[Code] ...
how to achieve this.l tried with temp tables it doesn't work.
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May 19, 2015
Given the sample data and query below, I would like to know if it is possible to have the outcome be a single row, with the ChildTypeId, c.StartDate, c.EndDate being contained in the parent row. So, the outcome I'm hoping for based on the data below for ParentId = 1 would be:
1 2015-01-01 2015-12-31 AA 2015-01-01 2015-03-31 BB 2016-01-01 2016-03-31 CC 2017-01-01 2017-03-31 DD 2017-01-01 2017-03-31
declare @parent table (Id int not null primary key, StartDate date, EndDate date)
declare @child table (Id int not null primary key, ParentId int not null, ChildTypeId char(2) not null, StartDate date, EndDate date)
insert @parent select 1, '1/1/2015', '12/31/2015'
insert @child select 1, 1, 'AA', '1/1/2015', '3/31/2015'
[Code] .....
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Jul 25, 2014
Basically i have three Tables
Request ID Parent ID Account Name Addresss
1452 1254789 Wendy's Atlanta Georgia
1453 1254789 Wendy's Norcross Georgia
1456 1254789 Waffle House Atlanta Georgia
Bid_ID Bid_Type Bid_Volume Bid_V Bid_D Bid_E Request_ID Parent ID
45897 Incentive 10 N/A N/A N/A 1452 1254789
45898 Incentive 10 N/A N/A N/A 1453 1254789
45899 Incentive 10 N/A N/A N/A 1456 1254789
Bid_Number Bid_Name Request_ID Parent ID
Q789456 Wendy'Off 1452 1254789
Q789457 Wendy'Reba 1452 1254789
Q789456 Wendy'Off 1453 1254789
Q789457 Wendy'Reba 1453 1254789
Q789456 Wendy'Off 1456 1254789
I want the Result
Parent ID Bid_Type Bid_Volume Bid_V Bid_D Bid_E AutoGeneratedCol
1254789 Incentive 10 N/A N/A N/A 1
1254789 Incentive 10 N/A N/A N/A 2
Bid Number AutoGeneratedCol_Link
Q789456 1
Q789457 1
Q789456 2
Request ID AutoGeneratedCol_Link
1452 1
1453 1
1456 2
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Jun 26, 2015
I have a table with below kind of data,
DECLARE @TBL TABLE (ItemId INT IDENTITY(1,1), ItemName NVARCHAR(20), ItemDate DATE, ParentItemName NVARCHAR(20), ItemOrder INT, ReportId INT)
INSERT INTO @TBL (ItemName, ItemDate, ParentItemName, ItemOrder, ReportId)
VALUES ('Plan', '2015-06-01', NULL, 1, 20),('Design', '2015-06-01', NULL, 2, 20),('Test', '2015-06-20', NULL, 3, 20),('Complete', '2015-06-30', NULL, 4, 20),
('Design child A', '2015-06-02', 'Design', 1, 20), ('Design child B', '2015-06-01', 'Design', 2, 20),
('Test child A', '2015-06-10', 'Test', 1, 20), ('Test child B', '2015-06-09', 'Test', 2, 20), ('Test child C', '2015-06-08', 'Test', 3, 20),
('Test grand child A', '2015-06-08', 'Test child B', 1, 20), ('Test grand child B', '2015-06-08', 'Test child B', 2, 20)
select * from @TBL
Here I want,
1. to display all parent with ORDER BY ItemOrder (no need to sort by ItemDate)
2. display all child row right after their parent (ORDER BY ItemOrder if ItemDate are same, else ORDER BY ItemDate)
3. display all grand child row right after their parent (ORDER BY ItemOrder if ItemDate are same, else ORDER BY ItemDate)
Looking for below output ...
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May 19, 2004
Huh?
I've got good RI data...BUT..a developer loaded the tables in alpha table order....
Such that the child loaded BEFORE the parent....
Huh?
Got a test being set up now to mess with the child file to add a key that doesn't exist in the parent...
But Why is this allowed?
In DB2 you can specify
LOAD DATA REPLACE NO CHECK....
On the load card...you then need to run a check after to verify the data...
Is that what's going on? Is there such a utility in SQL Server to run a check post load?
I'm confused....
Any comments appreciated.
Thanks
Brett
8-)
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Feb 25, 2008
hi,
i have two tables i want the identity value of the parent table to be inserted into the chile table
here is my code,but i don't know why it isn't working !
protected void Button1_Click(object sender, EventArgs e) { string connectionString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString; string pcontent = TextBox1.Text; string data = TextBox2.Text; addtopic(pcontent,connectionString); addfile(data, connectionString); } public void addtopic(string subject,string connstring) { using (SqlConnection connection = new SqlConnection(connstring)) { SqlCommand command = new SqlCommand("INSERT INTO parent" + "(content)" + "Values(@content)", connection); command.Parameters.Add("@content", SqlDbType.Text).Value = subject; connection.Open(); command.ExecuteNonQuery(); } } public void addchild(string name, string connstring) { using (SqlConnection connection = new SqlConnection(connstring)) {Guid id = Guid.NewGuid(); SqlCommand commandd = new SqlCommand("INSERT INTO child" + "(parentid,data,uniqueid)" + "Values(@@IDENTITY,@data,@uid)", connection); commandd.Parameters.Add("@data", SqlDbType.NVarChar, 50).Value = name; commandd.Parameters.Add("@uid", SqlDbType.UniqueIdentifier).Value = id;
thanks in advance :)
connection.Open(); commandd.ExecuteNonQuery(); }
}
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Jul 16, 2005
I have a parent/child relationship in a relational database broken out like this:
Table Name: categories[category_id] int (primary_key NOT NULL),[category_name] varchar(50),[parent_fk] int
The parent references the category_id in the same table to create the parent/child relationships. I can get all the bottom level categories by doing this:
select category_id, category, parent_fk from categories where category_id not in ( select parent_fk from categories)
Each bottom-level category has a count attached to it.
The problem I have is getting the counts rolled up for each parent of the bottom level. A parent could/will have multiple bottom-level categories (and counts).
My sql is a little weak, could you help me out? I can utilize everying in SQL 2000 (stored proc, UDF, anything).
Thanks!
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Sep 27, 2013
Here is the table - Company with fields:
CompanyID, ParentCompanyID (both integers)
Given a CompanyID - I want to get all the children for the Company.
I did similar procedures but somehow, could not get this to work.
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Jul 1, 2007
I want to find all the child of a node in a tree . A child can have multiple parent i.e 2 can be place under multiple parent . The folling is the data:
ParentID ChildID
-------------------------
10 8
8 6
8 7
7 2
7 5
5 1
5 2
6 2
child of parent if input 10
8
7
6
2
2
5
1
(2) can be neglected
input 7
2
5
1
(2) can be neglected
input 8
7
2
5
(2) can be neglected
Plz help we to write the sql statements
Thanks
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Aug 2, 2007
I am designing a table to represent data in hierarchy structure, I use id and parent id to represent the data in hierarchy form:
Id | parent_id
---+-----------
1 | 0
2 | 0
3 | 0
4 | 1
5 | 1
6 | 4
7 | 4
8 | 7
9 | 7
This structure requires complicated queries (recursive call) to find out all the child of a root node, so I have added another field for the root id.
Is this a good relational database design ? kindly suggest.
Id | parent_id | root_id
---+-----------+---------
1 | 0 |
2 | 0 |
3 | 0 |
4 | 1 | 1
5 | 1 | 1
6 | 4 | 1
7 | 4 | 1
8 | 7 | 1
9 | 7 | 1
10 | 2 | 2
11 | 2 | 2
12 | 10 | 2
13 | 10 | 2
Rgds
Vijay
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Jul 20, 2005
In our database we have a list of devices in a "Device" Table, eachhaving one or more IP's located in the "IP" Table linked through aforein key on the DeviceID Column.I would like to retrieve this information as SuchDeviceID IpAddress1 10.0.0.1, 10.0.0.2, 10.0.0.32 ...345etc.Is it possible to do that without using cursors? Through a query?
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Jul 20, 2005
I want to create a 1-many relationship. Parent table has a primarykey, child table has no primary key. The child table does have anindex with all four fields of the parent's PK. How can I do this?Thanks, Bob C.
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Jun 28, 2004
Hello all, I'm having a real hard time trying to figure this one out. I'm trying to create a sql query that selects both the parent name and it's children, but it's got to loop through all the record sets to populate a drop down as an end result.
I think I thought this out correctly:
I have 2 tables
category
relationship
tbl category
cat_id //auto int
cat_name // varchar
relationship
r_id // auto int
parent_id // int
child_id // int
both the parent_id and child_id are associated with the cat_id
in my category table I could have
1cars // this is parent
2 audi
3 bmw
4 chevy
Table data example
r_id parent_id child_id
****************************
1 1 15
2 1 16
3 1 17
4 2 55
5 2 56
etc...
I want to select both the parent cat_name from category and also select the child cat_name where the parent_id = #
I can do it manaully like this
select cat_name, cat_id, parent_id , child_id from category, relationships where child_id = cat_id and parent_id = 1
what is the best way to loop through all the parent ids to find child category?
Could this be done in a stored procedure?
thanks in advance.
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May 9, 2006
I am having problems creating a trigger in SQL Server? I have 2 tables (parent and child) with one to many relationship. When I save a record, one row gets inserted in the parent and one to many gets inserted in the child. The trigger is on the parent table and it is trying to select the number of new records just inserted in the child table that meets a certain criteria. Since the transaction hasn't been committed I can not select the number of records from the child. Does anyone know how to handle this? My manager insists this be done in a trigger.
Thanks, James
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Dec 24, 2004
Any one have any ideas or links to point me to ???
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Jul 26, 2007
I would like to create a View (we'll call it FamilyView) using two tables, that I can then query against.
For example:
Parent
{
ID_PK,
Name,
PhoneNum,
Address
}
Child
{
ID_PK,
ParentID_FK,
Name
}
The view would return a dataset like this:
Parent.Name, Parent.PhoneNum, Parent.Address, Child.Name1, Child.Name2, Child.Name3... Child.NameN
William Smith, (555)555-5555, 123 Main Street, Susie, Peter, Bill Jr, Fred
Jason Jones, (666)666-6666, 54332 South Ave, Brian, Steven
Kay McPeak, (777)777-7777, 9876 Division NW, Kathy, Sally, Karen, Deb, Becky, Kendra, Ann, Edward
with an unknown number of children for each parent.
Then I would like to be able to query against this view with something like this:
SELECT * FROM FamilyView Where Child2 = 'Peter'
I have no idea how to write the SQL for this View. Is it possible?
Is this possible without using a cursor?
Thanks for any advice you all can give me.
Brian
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Apr 4, 2008
Hello all gurus out there.
I'm an entre level junior programmer. My question is kind of confusing but I'll try to put it as simple as I can.
First we have a main table called "job1". This table consists the order information. The file_id is the unique id and the primary key for this table. This table also pertains other information such as customer data (max limit 5), job data etc. This table is actively (non-stop) used throughout the day.
We have a non-interactive process which will take customers information from the main table and insert into the child table table "jobcust". Jobcust would have file_id, cust, cust_type. For example, if Job1 table had fiel_id=100 and cust1="Tom" and Cust2="David", now Jobcust will have two records file_id, cust1 and file_id,cust2. The main problem is the child table needs to be updated right away and our non-interactive process is good at doing that.. but it is causing a major DATA LATENCY. I would like to ask you all, if you know any better way of doing this without any process.. like in the back end with a trigger/procedure or something like that.
All you help is appreciated.
Thanks much.
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Oct 12, 2013
I am importing data from a paradox table and trying to clean it up. I have this query that finds all the child records that are not in the parent table.
Select MemberID
FROM memtype AS a
WHERE NOT EXISTS
(SELECT *
FROM members AS b
WHERE a.MemberID IN (b.MemberID));
Now I'm trying to delete all those child records instead of just selecting them so I tried...
Delete MemberID
FROM memtype AS a
WHERE NOT EXISTS
(SELECT *
FROM members AS b
WHERE a.MemberID IN (b.MemberID));
Sql clearly doesn't like this
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Dec 11, 2013
I have a parts table which has partid (GUID) column and parentpartId (GUID) column. Need to copy the records to the same table with new GUIDs for partids. How to do that? cursor or temp tables?
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Feb 24, 2014
I have an application that has an existing query which returns org units (parent and child) from organization table with orderby on createddate + orgid combination.
Also I added another log table Organization_log with exact columns as Organization table and additional 'IS_DELETED' bool column.
WITH Org_TREE AS (
SELECT *, null as 'IS_DELETED', convert (varchar(4000), convert(varchar(30),CREATED_DT,126) + Org_Id) theorderby
FROM Organization WHERE PARENT_Org_ID IS NULL and case_ID='43333'
[code]...
I need to modify the query:
1. To display the records both from the Organization table and Organization_Log table.
2. The orderby should be sorted on 'Organization Name' asc and it should follow the child order in alpha sort as well.
E.g.:
aaa
==>fff
==>ggg
bbb
==> aaa
==> hhh
eee
==> ccc
==> ddd
==> fff
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Aug 14, 2007
Hello,
I am wondering if there is a way to insert one parent record with multi child records in one transaction? I am using dataset to update my database. I want to use transaction so if one record insert fails all the transctions rollback.
Thanks
Your Input would be greatly appricated.
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Nov 2, 2007
hello there,
I think I might know the answer to this, but I wanted to see if any one has come up with a slick idea for enforcing this relationship. If I have two tables and one is dependent on the other (parent-child relationship), how can I enforce that every parent record has a corresponding child record? Here is a code example
USE tempdb
GO
CREATE TABLE dbo.Parent
(
ParentId int NOT NULL
)
ALTER TABLE dbo.Parent ADD CONSTRAINT PK_Parent PRIMARY KEY CLUSTERED (ParentId)
CREATE TABLE dbo.Child
(
ParentId int NOT NULL
,ChildId int NOT NULL
)
ALTER TABLE dbo.Child ADD CONSTRAINT PK_Child PRIMARY KEY CLUSTERED (ParentId, ChildId)
ALTER TABLE dbo.Child ADD CONSTRAINT FK_Child_Parent FOREIGN KEY (ParentId)
REFERENCES dbo.Parent(ParentId)
INSERT INTO dbo.Parent VALUES (1)
INSERT INTO dbo.Child VALUES (1,1)
INSERT INTO dbo.Parent VALUES (2)
INSERT INTO dbo.Child VALUES (2,2)
INSERT INTO dbo.Child VALUES (2,1)
INSERT INTO dbo.Parent VALUES (3)
SELECT
p.ParentId, 'I SHOULD HAVE A DEPENDENT RECORD'
FROM
dbo.Parent p
LEFT JOIN
dbo.Child c
ON
p.ParentId = c.ParentId
WHERE c.ParentId IS NULL
ParentId 3 should have a child record associated with it. I am assuming that these are my choices:
1) code all inserts to the parent table along with a insert to the child table and wrap those in a transaction
2) place a trigger for insert on the parent table that ensures that the child table is populated after data for the parent.
Here is the gotcha, we will be using a middle-tier data access layer (nhibernate or dlink) so .NET application developers will be creating the data modifications at the transactional level. Also there might be several ongoing ETLs that populate this schema as well, so multiple points of entry and seperate code blocks. I don't want to hide business logic within triggers.
I assume that all our coders are competent and could enforce this properly via code, but I know that mistakes happen. Has any one come across this situation and have a solution for enforcing the integrity of the schema with constraints?
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Feb 28, 2008
how can we delete parent table as well as child table using a single query applied on parent table, can someone please help me onn this topic? it will be very nice of you guys.
Rahul Arora
07 Batch
NCCE Israna,
######################
IMPOSSIBLE = I+M+POSSIBLE
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Mar 13, 2008
Hi
i have a table named categorymaster
categoryid catname parentid
1 Boxing 0
2 Tennis 0
3 Basketball 0
4 MayWeather 1
5 Tyson 1
6 Clinton woods 1
7 RogerFederer 2
8 Micheal 3
9 Hingis 2
so if i give input say categoryid=1[This falls under main category-boxing]
i need to get result as
1 boxing [main category]
4 mayweather [sub category]
5 tyson [sub category]
6 clinton woods [sub category]
if i give categoryid=5[Note:Tyson]
result should be as
1 boxing [main category]
5 tyson [sub category]
hope u can get my question
Thanks in advance
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Mar 15, 2008
dear friend,,
i have two table.in my first table id is primarykey and in my second table id if foreign key. so my need i have to use one query to delete the primary key table values. so if i am deleting one id in primary key table the child in the second table has to be deleted automatically.if parent get deleted the child should get deleted automatically. so plese help me to do this please give me sample query please
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Nov 8, 2005
Greetings,I just wanna know if anyone can tell me how to get all user definedtables in parent-then-child manner. I mean all the parents should belisted first and then childs.I dont think there is any direct way to do this, but i am not able toform any sort of query to achieve this.Any help will be greatly appreciated.TIA
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