Insert Into Relational Table Primary Key From Parent
Sep 22, 2007
Hello, I have a Stored Procedure which insterts into Orders table. Orders table is the parent table, with primary key OrdersID. I also have a child table, Client, with foreign key OrdersID. I want it to insert the data into the orders table, and at the same time insert the OrdersID into the FK of the child table. Any info would be appreciated. I have no idea how to do it.
I need to add a child table that will tell us who the participants counselor is, what I did was I did a Make Table query based off the primary key of the Parent table and made that the link (foreign key) for the People_tbl and the Counselor_tbl, so if the counselor changes then the user adds the record to the counselor tbl and then puts in the Effective date. The problem is that when I run a report it doesn't show the present counselor always shows the old counselor?
Code: SELECT Student_ind.StudentFirstName, Student_ind.StudentLastName, Student_ind.[Student ID], People_tbl.[Family ID], People_tbl.FirstName, People_tbl.LastName, People_tbl.[Parent ID] FROM People_tbl RIGHT OUTER JOIN Student_ind ON People_tbl.[Family ID] = Student_ind.[Family ID] WHERE (People_tbl.LastName = @Enter_LastName) AND (People_tbl.FirstName = @Enter_FirstName)
Hey everyone, I have just started getting into to SQL and am completely brand new to the whole concepts of relational databases. Someone on this forum pointed to the MSDN videos on LEARNVISUALSTUDIO.NET which have been very helpful. Unfortunately while learning about relational databases and looking at the program that I want to design and make using them, I have run into a pretty big wall, concerning the primary key and foreign key. For my program, I am trying to save an object, and lets say the base class is SLIDE. Now SLIDE will store basically most of the information that I will ever want to store, such as timeCreated and mainText and slideID(primarykey). But there are other classes that derive from slide that will store just a bit more information than that because of what they are. Lets say there is a class derived from SLIDE called PERSON that stores its parentNode, which is to say something that this slide specifically belongs to and has a reference to. Now the tricky part is that in this program, every single slide can have a reference to another slide, that you would see displayed and that you could just click on and view if you wanted to. Now relating what I just told about the classes in my program to a relation database standpoint is what confuses me. If I make a table SLIDE, it would hold incomplete data about the PERSON object, because that object has more data than SLIDE has. The answer to this was to make another table called PERSON, which would have more columns. But now we arrive at the big problem: The primary key called maybe SLIDEID would be different in this new PERSON table than in the other table called SLIDE (or any other derived class). Therefore the link between these tables is messed up. In my object orientated mind I am thinking of static class variables that would still stay constant for derived classes, so that when I make a PERSON slide it will increment off of the primary key of the SLIDE table. In other words, is there some sort of super TABLE that you can derive from, like an abstract class, where the primary keys of other tables can build off of because they will be used as the same type of reference to eachother. If none of this made sense to the reader, I am greatly sorry. I do not really know what else I can say to convey to you the problem I have. Maybe its because I am so used to object orientated languages that this is making it so difficult to explain. If however you do understand what I am talking about, please think about it and help me find a solution to this problem. I am not an experienced programmer, but I do very much enjoy it and I am very excited about starting to make this program, and I have learned that before I start coding it is very important to have a very firm design in mind first. Thank your for reading, Jeremy
I would like to insert into a table with a primary key that has a uniqueidentifier. I would like it to go up by one each time I execute this insert statement. It would be used as my ReportId My VB code is this. Protected Sub btncreate_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btncreate.Click 'set connection string Dim errstr As String = "" Dim conn = New SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|ASPNETDB.MDF;Integrated Security=True;User Instance=True") 'set parameters for SP Dim cmdcommand = New SqlCommand("sprocInsertNewReport", conn) cmdcommand.commandtype = CommandType.StoredProcedure cmdcommand.parameters.add("@UserName", Session("UserName")) cmdcommand.parameters.add("@Week", vbNull) cmdcommand.parameters.add("@Date", vbDate) cmdcommand.parameters.add("@StartTime", vbNull) cmdcommand.parameters.add("@EndTime", vbNull) cmdcommand.parameters.add("@HeatTicket", vbNull) cmdcommand.parameters.add("@Description", vbNull) cmdcommand.parameters.add("@TakenAs", vbNull) cmdcommand.parameters.add("@Dinner", vbNull) cmdcommand.parameters.add("@Hours", vbNull) cmdcommand.parameters.add("@Rate", vbNull) cmdcommand.parameters.add("@PayPeriod", vbNull) cmdcommand.parameters.add("@LastSave", vbNull) cmdcommand.parameters.add("@Submitted", vbNull) cmdcommand.parameters.add("@Approved", vbNull) cmdcommand.parameters.add("@PagerDays", vbNull) cmdcommand.parameters.add("@ReportEnd", vbNull) Try 'open connection here conn.Open() 'Execute stored proc cmdcommand.ExecuteNonQuery() Catch ex As Exception errstr = "" 'An exception occured during processing. 'Print message to log file. errstr = "Exception: " & ex.Message Finally 'close the connection immediately conn.Close() End Try If errstr = "" Then Server.Transfer("TimeSheetEntry.aspx") End If My SP looks like this ALTER PROCEDURE sprocInsertNewReport
Hi, I'm not user to inserting data into databases, usually I just read the data. So I think my problem might be pretty common.I have a table of longitudes, latitudes, city names, and country names. I set the primary key to be the columns longitude and latitude. I have a method that generates the user's location and the mentioned data. So I want to only insert the new data into the database if it is new and unique. currently if the same user goes to my site, it inserts the data fine the first time and then throws and error the second time because it is inserting duplicate primary key information. Do I need to query the database to see if the data record already exists? or is there a way to insert the record only if it is "new"?? Thanks for the help!!
I'm trying to do multiple insert statements. The table looks likethis:CREATE TABLE $table (CNTY_CNTRY_CD char(3),ST char(2),CNTY_CNTRY_DESCR varchar(50),CNTY_CNTRY_IND char(1),HOME_CNTRY_IND char(1),CONSTRAINT cnty_key PRIMARY KEY (CNTY_CNTRY_CD, ST))I'm using 2 fields for the primary key constraintMy insert statement looks like this:INSERT INTO $table(CNTY_CNTRY_CD,ST,CNTY_CNTRY_DESCR)VALUES(?,?,?)I've been through the list of values and none have both the sameCNTY_CNTRY_CD and ST and yet, this is the error message I'm getting:DBD::ODBC::st execute failed: [Microsoft][ODBC SQL Server Driver][SQLServer]Violation of PRIMARY KEY constraint 'cnty_key'. Cannot insert duplicatekey in object 'event_CNTY_CNTRY_CD'. (SQL-23000)[Microsoft][ODBC SQL Server Driver][SQL Server]The statement has beenterminated.. (SQL-01000)(DBD: st_execute/SQLExecute err=-1)Why is it looking for unique in just the one column instead ofreferencing both? What do I need to do to get this to work? Help!
Hi i have set up two very simple tables, I want a user to be able to create a basic account ( data stored in User_Profile table with Id set as the Primery Key as Identity) I want the user to be able to be able to return to their account at a later date and then post multiple reviews of different bands they have seen at a later date. I kept the tables in my example very simple so I could get my head around the concept, but generally, I want to connect the Id (PK) value in User_Profile table to the User_Id filed in the User_Review table, so every review that user writes, will be connected directly to their Id.
Any help you could give would be fantastic a i have no idea where to start!!!
User_Profile
Id int, ( as primary Identity Key)
Name
City
Country
I have a second table called User Reviews
User_Revews
Revew_Id int , ( as primary Identity Key)
User_Id int, ( I want this to contain the Id value in the User profile Table)
I am converting an old Access/Forms application to a .Net/SQL intranet site. The data was imported and most CRUD features are working. But, I have some data issues to contend with.For this example I have two tables, Cases and Parties. The Parties table includes a Column ReportID, which happens to reference the primary key of some unique Case. Lets say Bob, Sally, and Mary are all associated with ReportID = 2.Looking at the Case table, I see indexes (ReportID) 1,3,4,5, such that Bob, Sally, and Mary are orphaned with out a case to reference.
1. Is it possible to bypass the auto-increment for the primary key of Cases and manually inject the missing Case (ReportID) with a specific primary key of 2? See my image to fill in some of the details.It is too early to tell but perhaps 10% of the Parties are orphan without an associated ReportID in the Case table. This fact is one of the reasons it was decided to rebuild the application, which was also never able to produce any reports.
2. What is an easy way to find all the orphan Parties?
I suppose I could export the Cases table to excel, add the missing Rows, and then overwrite the defective Cases table data with the corrected data. I would rather learn to fix the data issues using the responses from this request.
I understand the basics for doing an insert. Their seems to be many ways of achieving the same thing in .net. I have used the tableadpaters and sqlcommand functionality to achieve this. My one question is how foregin keys should be created in associated tables. EG so if i create a new record entry in one table and the primary key for that entry is a foreign key in another table, do I need to call 2 table adapters, or run 2 sqlcommands(taking the primary key from the first traction and use this in the next transaction)?
Any help or direction for some good tutorials on this would be much appreciated.
In a special request run, I need to update locker and lock tables in a sql server 2012 database, I have the following 2 table definitiions:
CREATE TABLE [dbo].[Locker]( [lockerID] [int] IDENTITY(1,1) NOT NULL, [schoolID] [int] NOT NULL, [number] [varchar](10) NOT NULL, [lockID] [int] NULL CONSTRAINT [PK_Locker] PRIMARY KEY NONCLUSTERED
[code]....
The locker table is the main table and the lock table is the secondary table. I need to add 500 new locker numbers that the user has given to me to place in the locker table and is uniquely defined by LockerID. I also need to add 500 new rows to the corresponding lock table that is uniquely defined in the lock table and identified by the lockid.
Since lockid is a key value in the lock table and is uniquely defined in the locker table, I would like to know how to update the lock table with the 500 new rows. I would then like to take value of lockid (from lock table for the 500 new rows that were created) and uniquely place those 500 lockids uniquely into the 500 rows that were created for the lock table.
I have sql that looks like the following so far:
declare @SchoolID int = 999 insert into test.dbo.Locker ( [schoolID], [number]) select distinct LKR.schoolID, A.lockerNumber FROM [InputTable] A JOIN test.dbo.School SCH ON A.schoolnumber = SCH.type and A.schoolnumber = @SchoolNumber JOIN test.dbo.Locker LKR ON SCH.schoolID = LKR.schoolID AND A.lockerNumber not in (select number from test.dbo.Locker where schoolID = @SchoolID) order by LKR.schoolID, A.lockerNumber
I am not certain how to complete the rest of the task of placing lockerid uniquely into lock and locker tables?
In a special request run, I need to update locker and lock tables in a sql server 2012 database, I have the following 2 table definitions:
CREATE TABLE [dbo].[Locker]( [lockerID] [int] IDENTITY(1,1) NOT NULL, [schoolID] [int] NOT NULL, [number] [varchar](10) NOT NULL, [lockID] [int] NULL CONSTRAINT [PK_Locker] PRIMARY KEY NONCLUSTERED
[Code] ....
The locker table is the main table and the lock table is the secondary table. I need to add 500 new locker numbers that the user has given to me to place in the locker table and is uniquely defined by LockerID. I also need to add 500 new rows to the corresponding lock table that is uniquely defined in the lock table and identified by the lockid.
Since lockid is a key value in the lock table and is uniquely defined in the locker table, I would like to know how to update the lock table with the 500 new rows. I would then like to take value of lockid (from lock table for the 500 new rows that were created) and uniquely place those 500 lockids uniquely into the 500 rows that were created for the lock table.
I have sql that looks like the following so far:
declare @SchoolID int = 999 insert into test.dbo.Locker ( [schoolID], [number]) select distinct LKR.schoolID, A.lockerNumber FROM [InputTable] A JOIN test.dbo.School SCH ON A.schoolnumber = SCH.type and A.schoolnumber = @SchoolNumber JOIN test.dbo.Locker LKR ON SCH.schoolID = LKR.schoolID AND A.lockerNumber not in (select number from test.dbo.Locker where schoolID = @SchoolID) order by LKR.schoolID, A.lockerNumber
I am not certain how to complete the rest of the task of placing lockerid uniquely into lock and locker tables? Thus can you either modify the sql that I just listed above and/or come up with some new sql that will show me how to accomplish my goal?
When creating a parent child dimension I am not using the primary key of the underlying table. I define the key when I create the dimension. The parent/child relationship works fine but my measure aggregation does not work.
The dimension has a regular relation type to the measure and the primary key from the underlying dimension table is used in the relationship to join in the measure. Since I have not used the primary key in the dimension and have defined my own key the define relationship page warns me that I have selected a non-key granularity attribute and I must directly or indirectly relate all other attributes to it. When I attempt to relate the attributes on the dimension structure tab I receive errors that I have created an attribute loop.
Ok, I have a page on my website where we can add products to our database. We are a music store, and most products have different versions or colors. I've created 2 tables, Products and Subproducts. The products table may hold info like Fender Stratocaster, and the subproducts would hold colors (Blue, Sunburst, etc). The subproducts table has an integer field called MainProductID, which is linked to the mainproducts table field RecordID. So far the page uses a wizard where if first creates the main product using an sql datasource. After the data has been added to the main products table, my page gives you the opportunity to add different sub products. The problem I am having is actually feeding in the RecordID from the main products table to my insert parameter on the sub products data source. This is what I have tried so far: There is a formview on the page that is bound to the main products table, after the entry is created I can physically see the info on my screen, so I know the data is there at my disposal SubProductsDataSource.InsertParameters.Add("@MainProductID", Formview1.datakey.item("RecordID"))SubProductsDataSource.Insert()Using this adds the data to the table, but the MainProductID is nullalso is there a cheap little way to refresh a page, because when I upload the product images I have it go to the next step where you are supposed to be able to see the images you uploaded, I don't see them which makes me think that the page is loading faster than the images are uploading. Thanks
I am trying to insert data into 2 different tables. I am using dataadapter and dataset.
Protected Sub SubmitButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles SubmitButton.Click Call ConnectionString()
Dim insertSQL As New SqlCommand() insertSQL.Connection = sqlConn insertSQL.CommandText = "SELECT location.CountryName, location.CityName, location.BuildingName, location.FloorID, rooms.name, rooms.FloorID AS Expr1 FROM location INNER JOIN floors ON location.FloorID = floors.id INNER JOIN rooms ON floors.id = rooms.FloorID"
Dim ds As New DataSet() Dim da As New SqlDataAdapter()
da.SelectCommand = insertSQL Dim scb As New SqlCommandBuilder(da)
Try da.Fill(ds) Dim ndr = ds.Tables("location").NewRow Dim ndr2 = ds.Tables("rooms").NewRow
Hi all, I am trying to create a diagram for our database, during the creating, I create some of the relationships which were not there(basically our original database is not relational database, that's why I am doing it) So sometimes I have to chage data type in order to create a relationship for the coloumns in different tables. i.e. change char(16) to varchar(7) (I checked the field that make sure all the data in this field is <= 7 characters)
But when I saved the diagram, there is an error message that state: Errors were encountered during the save process. Some of your database objects are not saved on your diagram.
'agent' table saved successfully 'VisitUSA' table - Unable to create relationship 'FK_VisitUSA_agent'. ODBC error: [Microsoft][ODBC SQL Server Driver][SQL Server]ALTER TABLE statement conflicted with COLUMN FOREIGN KEY constraint 'FK_VisitUSA_agent'. The conflict occurred in database 'CMC', table 'agent', column 'AgentCode'.
What does that mean? is it caused by some of the agentcode data in VisitUSA table which is not in agent table? Thanks! Betty
I use the following 3 sets of sql code in SQL Server Management Studio Express (SSMSE) to import the csv data/files to 3 dbo.Tables via CREATE TABLE & BUKL INSERT operations:
-- ImportCSVprojects.sql --
USE ChemDatabase
GO
CREATE TABLE Projects
(
ProjectID int,
ProjectName nvarchar(25),
LabName nvarchar(25)
);
BULK INSERT dbo.Projects
FROM 'c:myfileProjects.csv'
WITH
(
FIELDTERMINATOR = ',',
ROWTERMINATOR = ''
)
GO ======================================= -- ImportCSVsamples.sql --
USE ChemDatabase
GO
CREATE TABLE Samples
(
SampleID int,
SampleName nvarchar(25),
Matrix nvarchar(25),
SampleType nvarchar(25),
ChemGroup nvarchar(25),
ProjectID int
);
BULK INSERT dbo.Samples
FROM 'c:myfileSamples.csv'
WITH
(
FIELDTERMINATOR = ',',
ROWTERMINATOR = ''
)
GO ========================================= -- ImportCSVtestResult.sql --
USE ChemDatabase
GO
CREATE TABLE TestResults
(
AnalyteID int,
AnalyteName nvarchar(25),
Result decimal(9,3),
UnitForConc nvarchar(25),
SampleID int
);
BULK INSERT dbo.TestResults
FROM 'c:myfileLabTests.csv'
WITH
(
FIELDTERMINATOR = ',',
ROWTERMINATOR = ''
)
GO
======================================== The 3 csv files were successfully imported into the ChemDatabase of my SSMSE.
2 questions to ask: (1) How can I designate the Primary and Foreign Keys to these 3 dbo Tables? Should I do this "designate" thing after the 3 dbo Tables are done or during the "Importing" period? (2) How can I set up the relationships among these 3 dbo Tables?
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;
Hi! Im working on a webapplication and has serious thoughts about howto optimize my table structure. To explain: My tablestructure today
(simplified):tbl_customerscust_idname.....tbl_contactscon_idname.....tbl_groupsgrp_idname..... My subtables look like this(alternative 1):tbl_sub_phonephone_idparent_typeparent_idphone_areaphone_nr.....tbl_sub_emailmail_idparent_typeparent_idemail..... As seen above every contact, group and customer can be assigned an unlimited amount of phonenumbers or emailadresses.For example when entering a new email or a customer following will be inserted in tbl_sub_email: parent_type = 'cst', parent_id= '2' (the cust_id from tbl_customers), email = 'gwerg@fe.com'The problem is i am uncertain if this is a very unefficient way of handling it? i see two alternatives: Alternative 2:i create x subtables for each table for example tbl_customers will get its mailadresses and phonenumbers contained in tbl_customers_phone and tbl_customers_emailWhat i am uncertain of here is if this would make things alot more troublesome when searching på example after a specific phonenumber.Alternative 3:
tables connection objects to subobjects tbl_customers_phoneidcust_idphone_idtbl_contacts_phoneidcon_idphone_idtbl_customers_mailidcust_idmail_id subtables tbl_sub_phonephone_idphone_areaphone_nr.....tbl_sub_emailmail_idemail..... Ranking these three models, wich would be the most efficient and most inefficient performanswise?What i want to avoid is performanceproblems when listing the objects, my indexing skills are a bit limited although im doing alot of reading and testing regarding this.So thats why im asking for advice so that i can minimize the need of rebuilding the table structure when the application already has been starting to get used.I also have another general question. I have alot of select querys when i need to fetch data from several different tables.Most of them is that i for example get an application from tbl_applications table, and that tables contains the columns cat1, cat2 and cat3 (wich are categories and contain the primary key integer to the tbl_sub_categorys table)With 3 joins i retrieve these 3 category names returning 1 result with all the info i need.Since ive been getting som strange results from the query analyzer(i got results that using clustered indexing for the primary key resulted in a slower query (higher cost)) i actually have another question.Can it generally be summed up that a single query(join or subquery) generaly ils faster than getting the data in separate selects?In the example above this i have the options either of using joins = 1 query or doing 2 querys and sorting the categorys codewise in aspx pages or doing 4 querys, one for the app followed by 1 for every category.Any input regarding this? As i said earlier im looking for the most efficient way of doing the things abov, would greatly appriechiate any input!
We have a project to parse out an xml file into relational sql table. The xml file is complex type with multiple nesting. We are trying to resort to use XQuery to parse it out to SQL tables-because of one thing or the other - other options on the table were not viable. I know that we can use C# to do the same thing but we are sticking to TSQL with Xquery. Has anybody used the same route for processing large complex xml files?
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
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.
We have a complex functionality of migrating data from a single record into multiple parent child tables.
To give you an example, lets us assume that we have a single table src_orders in the source database. We have a parent Order table and a child OrderDetails table in the target database. We need to pick one row from src_orders and insert this row in the Order table, pick up its PK (which is an identity column) and then use this to insert rows (say 5) in the OrderDetails table.
Again, we go back to the source, take a row, insert it into Orders, pick up the Orders PK and insert n rows in OrderDetails.
As of now, we are using the following approach for achieving this functionality.
1. Get the identity generated from the target table and store both the source table id and the target table id in a recordset.
2. Use the recordset as the source to a foreachloop , using foreachADO enumerator
3. Use data flow tasks to get the fields from the parent table for the source id, that needs to be inserted into the target child table
In case I have not ended up confusing everyone, can anyone validate this or suggest a better approach? :)
I have cubes that hold quite a few calculations and so creating Excel pivot table views from it take a long time. This is even true for Excel 2007.
Now I wonder if it would be possible to write back all the calculation results to a relational table - maybe one that exactly matches the report format - so creating another report would be much faster?
SSRS seems to be a way to go but it does not speed up my Excel case.
I read about write-back in ROLAP and MOLAP but I don't think any of these concepts help me to really speed up my reports.
The closest thing I was able to find so far, which besides seems to do exactly what I want is Microsoft's new PerformancePoint 2007. It's just it seems overkill for my projects and the price is at $20K.
Sharepoint is a pretty darn dynamic service and that got me thinking of how databases are created. Just wondering out loud, surely someone has thought of creating databases in such a manner, but I don't know if it's a thought that has been struck down.
It would look something like this: Single Table ID uniqueidentifier PK ParentID uniqueidentifier FK to ID Name nvarchar(MAX)
Value nvarchar(MAX)
In this manner, you would create your database "columns" as needed in the data-layer.
If that is too strict, (every datatype would be encoded to base64), you could create a value option for basically every data type. EG. nvarchar(max), nvarbinary(max).... and add another field that describes the data-type to be used for that "column" ID uniqueidentifier PK ParentID uniqueidentifier FK to ID Name nvarchar(MAX) DataType nvarchar(50) //constrained to allowable datatypes MaxLen nvarchar(31) //ahh, what the hey, let's add this for sniggles. ValueNvarchar nvarchar(MAX) nullable
ValueNvarbin nvarbinary(MAX) nullable
....
Now, to allow the "values" for those "columns", you may be able to still use the single-table approach, but it may be better to have an extra table for that (probably even a different partition and drive).
Things to consider, indexing..... In development, the data-layer would handle the creation/reading of table columns. The business-layer, which could be many for different parts of a company, would make it's requests to the DL. It may need a username, and the DL would either just create it, or suggest an already existing username column. The path to that username may not be where a particular biz element wants it, so they will ask the DL create another under a diff path.
The business-layer is probably the most important reason for wanting a single dynamic table.
In the end, the relation structure could be like: Human //dir, no value, no parent (root) FirstName //value - text LastName //value - text Parent1 //value - Me Id Sibling1 //value - Me Id SiblingN //value - Me Id
School //dir, no val ParentId //value - Id (perhaps category would be Building) Name //value - text
The sibling N would be an example of how a table may need to be dynamic. A positive of the single-table approach is no limitation on number of "columns". Another is the ease to move a hierarchical structure if needed. School may want to be University instead of just "school" and be placed as a child of "school".
I am working on a project where I have a page that will have a parent record (Product) and then 1 or more children (options available for the product, user enters text to define) displayed in a table/gridview. There is a relationship defined in the database between the product and options table). My question is how can I allow the user to add the product info and then within the same page also add the options and only then save it all? The options will added to a table. Thanks for any help
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.
i am trying to figure out how i can create an SSIS package to insert into multiple tables. After the first insert, I want to take the ID created (an Identity column) and then use that to insert into other associated (foreign key) tables.
For example, I have a table Users. The primary key is an Identity column. Once the SSIS insert is complete, the bulk load of new users has an identity ID value for each row. What I want to do, during the same SSIS package, is to take each row as it is inserted and add rows to other tables. Like, UserDepartment - it has a foreign key for the user id and a foreign key to the department being added. And, as part of this I will need to get the latest ID value and possibly some other values and store them in variables.
I looked at multi-cast, but I don't know/think that this will work for me.
does anyone know of a good example or article like this?
I believe saving prediction query results to relational tables is possible (the BI studio does it!). I am not clear on how to do this w/o the BI studio, which means if I write a DMX query and want to store its output to a relational table, how do I do it?
hello, I am beginner for asp.net and sql server. I used Sql server manegement studio full version and I exported my aspnetdb which was created by VS2005 to my host sql server. I have a question: relational tables are not relational no longer. I noticed that when I created database diagram. what is wrong by exporting? thanks for your helps...
In SQL Server 2000, I have a parent table with a cascade update to a child table. I want to add a record to the child table whenever I add a table to the parent table. Thanks
I have two tables that are related by keys. For instance,Table employee {last_name char(40) not null,first_name char(40) not null,department_name char(40) not null,age int not null,...}Employee table has a primary key (combination of last_name and first_name).Table address {last_name char(40) not null,first_name char(40) not null,street char(200) not null,city char(100) not null,...}Address table has a primary key (combination of last_name, first_name andstreet in which (last_name, first_name) reference (last_name, first_name) inemployee table.Now I want to delete some rows in Address table based on department_name inEmployee table. What is sql for this delete?I appreciate your help. Please ignore table design and I just use it for myproblem illustration.Jim
convert my table(like picture) to hierarchical structure in SQL. actually i want to make a table from my data in SQL for a TreeList control datasource in VB.net application directly.
ProjectID is 1st Parent Type_1 is 2nd Parent Type_2 is 3rd Parent Type_3 is 4ed Parent
