SQLDataSource Relational Data
Nov 14, 2005
I am just now starting the switch from .NET 1.1 to .NET 2.0. I really like the new way of using the SQLDataSource and setting up Views declaratively as opposed to doing it all in code, which brings me to my question.In some of my applications I have a single Stored Procedure return multiple result sets to a single DataSet where I have a DataRelation set up. Then I can have nested DataGrids that use the GetChildRows() method to filter the results to display the hierarchical data. I would like to do something similar with the SQLDataSource and GridViews but haven't found a way to get multiple result sets.One thought I had was to create a Strongly Typed Dataset and then use the ObjectDataSource object, but I still didn't see a way to get child rows out of the datasource. I've seen an example that uses a <FilterParameter> to get nested data, but there is an extra trip made to the server for each parent item as it just put an extra parameter in the WHERE clause of the query.
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Aug 4, 2005
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
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Aug 1, 2006
I have a few questions for you guys. I have a client
application that can be offline or online. While offline, records can be added and need to be later synced to production.
I will use rda to pull the table down, and this is working fine. Now what if I
have multiple tables where I want a foreign key relationship?
With rda I can only pull down one table at a time from
everything I've read. Now say create a constraint after pulling the two or more tables down. While in offline mode I create a new record on two seperate tables with foreign key/primary key relationship.
When I do the push to the server will it automatically
update the foreign key reference (locally) to the right one on the production
server? Or will I get a duplicate primary key error? On the production server the primary key will be different because of the identity. This is very important because I will have multiple clients.
Thanks in advance
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Apr 2, 2008
Hello everyone
When converting From Relational data into XML which
method ie RAW, AUTO, PATH, EXPLICIT is mostly used and why please
Regards
Rob
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Jul 20, 2005
Hi Please help for this simple problemDTS Transfer or any other method?I have Customer_Order Table and customer_Order_Details Table.For OrderID = 1, I have 3 rows of Order Details.I want to transferCustomer_Order Table for OrderID 1 in DTS, the system should transferOrder Table as well as Order details table Rows for ORderID =1.How to customize in DT or is there any way to get this data to transferfrom source DB to Dest DB?KAMAL KUMAR V--Posted via http://dbforums.com
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Jan 19, 2008
Hi i am trying to use this query to pull all the publications stored in the database and all the authors contributing to that publication (1 to many relationship). I am trying to use a sub query so that i can display the results on one row of a gridview (including a consecutive list of all the authors). However i am recieving this error: Incorrect keyword near the word SET. ?
Maybe i need to add a temp column in the sub query to pull all the related authors for a single publication - but i dont know the sql for this? can anyone help?
Thanks
SELECT ISNULL(Publication.month, '')+ ' ' + ISNULL(convert(nvarchar, Publication.year), '') as SingleColumn, Publication.publicationID, Publication.title FROM Publication WHERE Publication.publicationID IN (SELECT (convert(nvarchar, Authors.authorName)) FROM Authors INNER JOIN PublicationAuthors ON Authors.authorID = PublicationAuthors.authorID) AND Publication.typeID IN (SELECT PublicationType.typeName FROM PublicationType INNER JOIN PublicationType ON Publication.typeID = PublicationType.typeID
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Mar 22, 2007
Hello everyone, this is my first post here so hopefully I am not asking a common question.
I am trying to create a flat dataset in SQL 2005. Basically I run a query and I get multiple rows for the same primary key. The query I am running is quite large and has several different tables connected to it, here is a small sample of what it looks like...
Typeid(Primary Key) Individual Address
1 Sam 912 Ave. J
1 Sam 913 Ave. Q
1 Sam 914 Ave. R
2 Mike 1000 Ave. O
3 Jill 1001 Ave. O
I want it to kind of look like this
TypeID Individual Address_1 Address_2 Address_3
1 Sam 912 Ave. J 913 Ave. Q 914 Ave. R
2 Mike 1000 Ave. O
3 Jill 1001 Ave. O
As I said before, this query is pretty big, and has several variables like Address where multiple rows are being taken by one Primary Key.
If it is not possible to do this in SQL 2005, is there a program that may be able to? Right now we are using SPSS as sort of a bandaid... we run the query in small portions like the one in the sample and then restructure the in sections but this takes several hours.
Anyways, thanks for any help that you may be able to provide.
-John
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Apr 8, 2006
I am searching for a way to fast load relation data. I know how to load data fast but how can i store relation data fast.
For example :
Table1 ( tabel1Id int identity , name varchar(255) )
Table2 ( tabel2Id int identity , table2Id , name varchar(255))
When i insert 50 records into Table1 i can't get the 50 identity fields back, to insert the related data into Table2.
I think one of the solutions could be returning a selection of
Table1 joined with syslockinfo, but i have no idea how to do it.
Does anyone have an idea?
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May 19, 2006
Hi,
I have played around with SSIS in addition to reading an SSIS book front to back, but I am still a little confused as to how to import an Xml file with relational data.
The Xml file is structured as follows:
<products>
<product>
<name>
<id>
<category>
<name>
<id>
</category>
<fields>
<field>
<name>
<value>
</field>
<field>
<name>
<value>
</field>
</fields>
</product>
</products>
Basically I want to import the Xml data into three tables: categories, products and fields. A product can belong to one or more categories and has one or more fields which store information about the product.
Using the Xml Source component I can load the Xml from the file, but I can only output one section (category, product or field) at a time. Since the relationship is infered from the hierarchical structure of the Xml (e.g. the fields don't store an ID of the product they belong to), I am not sure how to import the relationships into my tables.
If anyone has any tips on how I can go about that, then it would be most appreciated :)
Thanks!
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Mar 7, 2007
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
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Jun 20, 2006
Problem:
I am working on a price comparison system which matches the best prices for a purchase (or an order) from exisiting purchase data.
The order is stored in multiple tables including order details (stores major items purchased: e.g., PC) and order sub-details (optional items purchased with the major items: e.g., speakers, backup device, webcam etc.).
There could be a number of major items in an order and each major item could have multiple related sub items. The other variables that affect the price include trade-ins if any, sales going on at the time of order, number of units etc.
Now, for any new configuration (major items/related sub items), the system should be able to return a list of previous purchases made with similar configurations, and similar variables (quatities, trade-ins etc). Even if the same model is not present, similar pcs by the same vendor should be considered. etc etc.
Questions:
Is this possible using Data mining?
If yes, which algorithm is recommended?
Also, can I assign/modify any kind of weights to certain variables (if same model: .6 ; if same model not available but pcs made by same manufacturer available: .3 ; by other manufacturers: .1)?
Any help will be greatly appreciated.
Thanks,
Jojy
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Aug 28, 2007
hi All,
I tried following piece of code in SQL 2005 , is working fine.
Select * from Table
FOR XML RAW('RECORDS')ELEMENTS,ROOT('MyTable').
But when i tried the same thing in SQL 2000 , it was not working .
Plz suggest a way in 2000 to get the XML output with custom RootNode Name in 2000 also like in 2005 ?
Thanks in advance.
Mohit
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Jun 12, 2006
Hi, all here,
As people say, Microsoft was the first major database vendor to include data mining features in a relational database. What dose this exactly mean? Thanks a lot for any guidance.
With best regards,
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Dec 25, 2007
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...
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Sep 18, 2007
Hi ,
My Input is a flat file source and it has spaces in few columns in the data . These columns are linked to another table as a foreign key and when i try loading them in a relational structure Foreigh key violation is occuring , is there a standard method to replace these spaces .
what approach should i take so that data gets loaded in a relational structure.
for example
Name Age Salary Address
dsds 23 fghghgh
Salary description level
2345 nnncncn 4
here salary is used in this example , the datatype is char in real scenario
what approach should i take to load the data in with cleansing the spaces in ssis
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Feb 7, 2006
When I deploy the cube which is sitting on my PC (local) the following 4 errors come up:
Error 1 The datasource , 'AdventureWorksDW', contains an ImpersonationMode that that is not supported for processing operations. 0 0
Error 2 Errors in the high-level relational engine. A connection could not be made to the data source with the DataSourceID of 'Adventure Works DW', Name of 'AdventureWorksDW'. 0 0
Error 3 Errors in the OLAP storage engine: An error occurred while the dimension, with the ID of 'Customer', Name of 'Customer' was being processed. 0 0
Error 4 Errors in the OLAP storage engine: An error occurred while the 'Customer Alternate Key' attribute of the 'Customer' dimension from the 'Analysis Services Tutorial' database was being processed. 0 0
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Dec 11, 2006
I have a page containing a FormView, which gets its data from a SqlDataSource control and displays details of a job. Two of the fields are location and job title. I want to re-use this data to create a dynamic page title. I know I can do this by setting the Page.Title to what I want to, but do I have access to the data outside of the FormView to which the data source is bound? If so how? Or will I have to perform an additional SELECT statement to get this data again?
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Feb 14, 2006
I am used to using asp.net 1.1
and I want to do the equivilent of the following with an SqlDataSource
da.fill(dst1)
lbl.text=dst1.tablename(0).fieldname
and what this does is fills the dataset with the information from the select command in the dataadapter and then gets the value for the first row of the fieldname
It doesnt seem like this should be that big of a deal, but it has become very frustrating trying to find the answer, does anyone know how to do this? Please post some demo code if possible
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Mar 9, 2006
Hi Everybody,I have an ordinary SqlDataSource on my page <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:P4SConnection %>" ProviderName="<%$ ConnectionStrings:P4SConnection.ProviderName %>" SelectCommand="SELECT CO_Id,CT_Name,CO_Username,CO_Password,CO_Company,CO_Email,CT_Id,CT_Position,CT_Admin, CO_Session,CO_LastLogin FROM company_contact LEFT JOIN company ON company_contact.CT_Company = company.CO_Id WHERE (CT_Username= & LCase(txtName.Text) & "> </asp:SqlDataSource>How do i use any of these values?I know I can display the values in a GridView or something but I dont want to display them.I originaly was using ODBC and just used the followingDim Row As DataRow = thisTable.Rows(0) Dim lP_ID As String = Row(0).ToString() Dim TheContact As String = Row(1).ToString() Dim theName As String = Row(2).ToString() Dim thePassword As String = Row(3).ToString() Dim TheCompany As String = Row(4).ToString() Dim TheEmail As String = Row(5).ToString() Dim lP_ContactID As String = Row(6).ToString() Dim ThePosition As String = Row(7).ToString() Dim bAdmin As Boolean = Row(8).ToString() Dim sP_Session As String = Row(9).ToString() Dim sP_Last As String = Row(10).ToString()Then I could use the values wherever I wanted.How do I do this with a SqlDataSource?Thanks,G
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Jul 18, 2006
Okay, I used the SQLDataSource control to get my data from the database
table. What or how do I retrieve individual data from the
sqldatasource? I want to do some string comparison and manipulation
before I display it to the browser. How can this be accomplish?
Help is appreciated.
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Oct 12, 2006
i HAVE TRIED THE FOLLOWING CODE BUT ITS NOT WORKING AS I WANT TO FILTER IT ACCORDING TO THE VALUE OF DROPDOWNLIST I HAVE TRIED CONFIGURE THE SQLDATASOURCE. DATASOURCE MODE PROPERTY IS SET TO THE DATASERSTILL IT IS NOT SHOWING ANY RESULTS <%@ Page Language="VB" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" ><head runat="server"> <title>Untitled Page</title></head><body> <form id="form1" runat="server"> <div> <h3>Search Jobs</h3> <table cellspacing="10"> <tr> <td valign="top" style="height: 162px"> <table border="0"> <tr> <td valign="top" style="width: 70px"> Location</td> <td><asp:DropDownList runat="server" id="CountryListBox" AppendDataBoundItems="True" DataSourceID="CountrySqlDataSource" DataTextField="location" DataValueField="location" AutoPostBack="True" > <asp:ListItem Selected="True" >(Show All)</asp:ListItem> </asp:DropDownList> </td> </tr> <tr> <td style="width: 70px"> Skills</td> <td><asp:TextBox runat="server" id="LastNameTextBox" Text="*" /></td> </tr> <tr> <td style="width: 70px"></td> <td><asp:Button runat="server" id="FilterButton" Text="Filter Results" /></td> </tr> </table> </td> <td valign="top" style="width: 587px; height: 162px;"> <asp:GridView ID="EmployeesGridView" DataSourceID="SqlDataSource2" DataKeyNames="employeeID" AutoGenerateColumns="False" AllowSort="True" RunAt="server" Height="143px"> <HeaderStyle backcolor="Navy" forecolor="White"/> <RowStyle backcolor="White"/> <AlternatingRowStyle backcolor="LightGray"/> <EditRowStyle backcolor="LightCyan"/> <Columns> <asp:BoundField DataField="employeeID" HeaderText="employeeID" ReadOnly="True" SortExpression="employeeID" /> <asp:BoundField DataField="employeeName" HeaderText="employeeName" SortExpression="employeeName" /> <asp:BoundField DataField="companyName" HeaderText="companyName" SortExpression="companyName" /> <asp:BoundField DataField="jobSkills" HeaderText="jobSkills" SortExpression="jobSkills" /> <asp:BoundField DataField="experiance" HeaderText="experiance" SortExpression="experiance" /> <asp:BoundField DataField="location" HeaderText="location" SortExpression="location" /> </Columns> </asp:GridView> </td> </tr> </table> <asp:SqlDataSource ID="CountrySqlDataSource" SelectCommand="SELECT DISTINCT location FROM tlbEmployee" EnableCaching="True" CacheDuration="60" ConnectionString="<%$ ConnectionStrings:ConnectionString %>" RunAt="server" /> <asp:SqlDataSource ID="EmployeeDetailsSqlDataSource" SelectCommand="SELECT * FROM [tlbEmployee] WHERE (([location] LIKE '%' + @location + '%') AND ([jobSkills] LIKE '%' + @jobSkills + '%'))" EnableCaching="True" CacheDuration="60" ConnectionString="<%$ ConnectionStrings:ConnectionString %>" FilterExpression="location LIKE '{0}' AND jobSkills LIKE '{1}'" RunAt="server"> <FilterParameters> <asp:ControlParameter ControlID="CountryListBox" PropertyName="SelectedValue" /> <asp:ControlParameter ControlID="LastNameTextBox" PropertyName="Text" /> </FilterParameters> <SelectParameters> <asp:ControlParameter ControlID="CountryListBox" Name="location" PropertyName="SelectedValue" Type="String" /> <asp:ControlParameter ControlID="LastNameTextBox" Name="jobSkills" PropertyName="Text" Type="String" /> </SelectParameters> </asp:SqlDataSource> <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>" SelectCommand="SELECT DISTINCT location FROM tlbEmployee"></asp:SqlDataSource> </div> <asp:SqlDataSource ID="SqlDataSource2" runat="server"></asp:SqlDataSource> </form></body></html>
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Feb 24, 2007
Hello all! How can I get data from SqlDataSource for row selected in GridView?
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Aug 27, 2007
Hello all,I have what I think should be a simple problem to solve but I just don't quite understand what to do (.NET Framework Developer Center confused me :( ).My code should load the highest SiteID, known as Last_ID into the siteIdBox when the form is in insert mode. My difficulty is in understanding how to use the sqlDataSource correctly. Dim dsLastId As New SqlDataSource() Dim siteIdBox As TextBox Dim dsmLastId As SqlDataSourceMode If FV_Site.CurrentMode = FormViewMode.Insert Then Try
dsLastId.ConnectionString = ConfigurationManager.ConnectionStrings("AquaConnectionString1").ToString dsLastId.SelectCommandType = SqlDataSourceCommandType.Text dsLastId.SelectCommand = "SELECT MAX(Site_ID) AS Last_ID FROM Tbl_Site"
dsmLastId = SqlDataSourceMode.DataReader
siteIdBox.Text = dsmLastId.?????
Finally
dsLastId = Nothing End Try End If If anyone could tell me the code for getting the value from the select statement into the textbox, I would be most grateful.Thank you, m00sie.
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Nov 29, 2007
I have a process that inserts a new record using the InsertCommand of a SqlDataSource. As part of the process, I need to insert data the is available in a different SqlDataSource. I was trying this with the Insert Parameter:
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Jan 16, 2008
[I am new to asp.net]
Assume I have a databse for "products"; product id is a primary key.
Here is what I am trying to:
1. DetailsView for a product (eg id = 1110) (I got this far)
2. how can I list other products starting with 111x id
3. I also to show them on same page as 1110 as "parent" 111x as children
Thanks,
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Jan 23, 2008
Background:I am using Visual Studio 2005 Standard SP1 to create an ASP.NET website that accesses an SQL 2005 database. I am using vb.net as well.I am passing an ID in a query string from one page to the next, where I retrieve it using an SQLDataSource. The data will only be one row; it is returning customer information.Problem:I need to be able to get specific fields from the SQLDataSource and populate some textboxes. Honestly, I'm not really sure where to begin. For the sake of argument, let's say that I am working with this:'My TextboxDim LastName As Textbox'My SQLDataSource (filtered by query string using the customer's ID to only get 1 customer's information at a time)SQLDataQuestion:So, how would I go about retrieving the lastname field from SQLData and inserting it into the textbox LastName?Thanks, J'Tok
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Feb 17, 2008
1st of all i'm using 3.5 and c#.
On my page I have 2 sqldatasource controls. sds1 and sds2
In my select statement of sds2 how do I make a select parameter based on a value or column I return from sds1? And please don't tell me to join my sds2 select in sds1, I don't want to do that. I need two seperate sds.
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Mar 14, 2008
Hello, every one! This is my first post on the forum. I got some questions about caching data with SqlDataSource controls in asp.net 2005. Here are them: According to the vs.net 2005 documents, SqlDataSource controls will sustain an individual cache for each combination of ConnectionString, SelectCommand and values of SelectParameters. But how about FilterExpression and FilterParameters? If I enable caching and change the FilterExpression or values of FilterParameters, will the SelectCommand be reexcuted, or will the databinding controls just get data from the existing cache? And will multiple SqlDataSource controls with the same combination of ConnectionString, SelectCommand and values of SelectParameters share a common cache, or sustain caches of their own?
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Apr 5, 2008
I am using a drap and drop SQLDataSource control. Everything works like I am wanting it to, but I want to check a value from one of the fields that I have retrieved. I am lost as how to retreive just the field. If I have to create another dataset to do the work what is the point of using the drag and drop control? I would really like to just access the dataset fields as needed.
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Apr 6, 2008
Hello...Can someone help me?I´m getting info of a product via sqldatasource in this way:<asp:SqlDataSource ID="myData" runat="server" ConnectionString="..." SelectCommand="spGetProduct" SelectCommandType="StoredProcedure"> <SelectParameters> <asp:QueryStringParameter Name="Id" QueryStringField="Id" Type="String" /> </SelectParameters></asp:SqlDataSource>In my ASPX page I get the data in this way:<asp:Repeater ID="repProduct" runat="server" DataSourceID="myData"> <ItemTemplate> <p><%# Eval ( "ProductName") %></p> </ItemTemplate></asp:Repeater> My problem is in my code behind because I need some data from this DataSource.For example, I want the Product Name as the page title. So the question is how I get something like this in my code behind:protected void Page_Load ( object sender, EventArgs e ){ this.Page.Title = Eval ( "ProductName") ;}Thanks!
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Apr 13, 2008
Hi, I don't know if i's a silly question.
Now I want to get data from sqldatasource by only write some code,I don't know without creat some data control components if it can be true?
If it can do,how can I write the codes?
Especially I don't know how to write the code witch can "read" data.
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Apr 21, 2008
In asp.net 3.5.....
To get the number of rows returned when the select is executed.......
Protected Sub SqlDataSource1_Selected(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.SqlDataSourceStatusEventArgs) Handles SqlDataSource1.Selected Session("MessageText") = e.AffectedRows & " Profile(s)"End Sub
How do you get the number of rows returned when you apply a filter expression to a selection of rows?
Thanks
Craig
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Jun 4, 2008
hi,im just a newbie in asp.net.i have my sqldatasource and a label. i want to get the data from sqldatasource to the label. how can i do that.need codes
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