T-SQL (SS2K8) :: Hierarchical Update Dataset - Refresh Datatable After Delete
Feb 5, 2015
Imagine the following scenario: two tables (say, "requests" and "details") are joined in a 1:n relationship on MSSQL 2008. Both tables contain an ID (autoincrement field) and a timestamp field for proper concurrency management. Data access in the frontend is provided by a typed dataset in VS 2010. There are SPs on the server which select, update, insert or delete data in each of the two tables (so, 8 SPs alltogether: uspRequestsSelect, uspDetailsInsert etc.). These SPs are used for data access in the dataset. The GUI is a Windows form with 2 datagridviews, one for request datatable and one for the child-relation-based datatable FK_request_details. So, each request shows its details. The form works well so far.
Now, trouble strikes. A business rule says: "the first details row of a request (=row with lowest ID) always has a 0 in column "additional fee". For additional detail rows, this field has to be set to constant value 45". In short: the first detail row of each request is free, second and later details are charged 45 €.
So, I created a SP "uspRequestFeeManager", which recalculates all (!) detail rows of a request. This SP is called in uspDetailsInsert, uspDetailsUpdate and uspDetailsDelete, as each of this cases causes the additional fee to be recalculated for all rows (as rowcount can change). In Management Studio, this works as well!
But: as the uspRequestFeeManager changes data even for rows the user did NOT touch, there's a concurrency exception in my frontend in the following case:
In a request with 2 detail rows (first row has fee = 0, second = 45), the user deletes the row with fee = 0. Committing via TableAdapterManager calls uspDetailsDelete, which calls uspRequestFeeManager, which sets the remaining single details row to a fee value of 0 (which is correct!). This causes TableAdapterManager.UpdateAll to fail ("concurrency exception; delete command has handled 0 of 1 expected records"), as uspRequestFeeManager has "edited" a row which the user didn't touch, and thus updated its timestamp as well. So, the list is out of sync.
The uspRequestFeeManager looked like a good idea... but it seems not to be.
Approach would be: instead of calling the uspRequestFeeManager from within the SP, call it programmatically after TableAfterManager.UpdateAll, and after that, 're-fill' the details datatable with the updated data. But that would transfer business logic from server to client. I don't like that...
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Mar 22, 2007
Like the subject says, I'm using strongly typed datasets. I'm using to designer to create the datasets and the methods. I can select and insert, but I can't update or delete. I right click on the adapter bar and select Add Query. I sleect 'Use SQL Statements'I select 'Update' (or 'Delete')I get a sql statement pane containing the word 'Update' ('Delete') and asking 'What data should the table load?'I can click on next, but anything else gives me errors. I'd list them, but I'm clearly doing something wrong and it's probably obvious. Diane
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Apr 29, 2015
I would like to know if it is possible to build one SP to perform all the functions (Add, Update, delete and Select) and then use this in my code instead of making one SP per action. I know this is possible but the update part throws me a little. I used an online example to explain where I fall short on the subject.
USE [SomeTable]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[MasterInsertUpdateDelete]
[Code] ....
So using this as the Stored Procedure, how would I update a records Salary alone by the ID without having to use all the information with just the salary being the new value?
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Mar 31, 2008
Hi,
Is it possible to use datatable/dataset as source to a report in Reporting Services. That is possible in e.g. Crystal Reports. I can only find Report Server Model and XML as non-database sources.
Best regards
Lars
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Jun 21, 2007
I have a longstanding problem where Stored Procedures or complex T-SQL called from VB.NET will not populate a DataTable object, but will work fine with a DataSet. For example: 'oConn is defined elsewhere... Dim sErr as String = "" Dim dt As New DataTable If Not oConn Is Nothing Then Try Dim sSQL as String = "select 1" Dim oCommand As New OdbcDataAdapter(sSQL, oConn) oCommand.Fill(dt) Catch ex As Exception sErr = "Database Error: " & ex.Message Finally sqlCloseConnection(oConn) End Try End Ifthis works fine and my dt DataTable object gets one row. However using this as the SQL: Dim sSQL as String = "declare @foo table(mycol integer);insert @foo select 1;select mycol from @foo;"does not work. It executes with no errors, but the DataTable has no rows. Finally, if I replace the DataTable with: Dim ds as DataSetI can then get the data in ds.Tables(0) no problem.So, if the results of the sql are a single result table being put at index 0 of a DataSet, why are they not being put in a single DataTable?When a sql is a simple select statement it always works directly to a DataTable. Only when it's a SP or sql with some logic does it require the DataSet approach. This is a reporting utility so I need to standardize the code though the sql will be dynamic. Any ideas?
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Dec 31, 2014
I am trying to build something which allows different user groups to inherit properties from other groups. For instance, a given user group (say 5) would inherit the universe definition of another user group (say 4). The catch is that this might in turn inherit its universe from another user group (say 3, and so on and so forth).
What I want is a way to give the system a user group and return the actual user group from which it inherits.
So extending my previous example above, suppose the following structure of inheritance:
5 <= 4 (5 inherits from 4)
4 <= 3
3 <= 2
2 <= 1
∴ 5 <= 1 (5 inherits from 1)
I feel like there’s a way to do this with an rCTE but the specifics are eluding me. Here’s some sample code
if object_id('tempdb.dbo.#Inherit') is not null drop table #Inherit
create table #Inherit
(
UserGroupId int,
Property varchar(30) check (Property in ('Universe', 'EventInstances', 'Scores')),
[Code] ....
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Nov 8, 2007
hi all.....
i select some records from my database using mysqldatareader.......but i want to load it's result sets into my datatable or dataset....
is it possible and how can i do it this way ?
thanks
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May 5, 2005
Hello,
I created this DataTable, add rows of data to it, and then display the data on to a form via a repeater.
Dim ds As DataSet = New DataSetDim dtTableName As DataTable = New DataTable("dtTableName") dtTableName.Columns.Add("Description")dtTableName.Columns.Add("ItemNumber")dtTableName.Columns.Add("Quantity")dtTableName.Columns.Add("Price")ds.Tables.Add(dtTableName)
What I need to do now is create a table in SQL Server and update the database with the data I've collect in my dataset. How do I bind and update this data to a sql server table?
Thanks!James
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Mar 18, 2008
Hi all,
I have spent the last couple of hours searching previous posts to see if this problem has been address before, but I was unable to find anything.
My problem is this... I use a stored procedure to populate my report. The stored procedure has recently been modified, and while I can see these updated fields when I run it through the Data tab, the list of available fields in the Dataset sidebar does not reflect the changes.
I have tried refreshing the Report Datasets multiple times. I have tried deleting the *.rdl.data file. I have tried removing the dataset in question and re-adding it. I have tried creating a new project altogether. I've tried restarting, etc.
I recognize that I can go in and add/remove fields to/from the dataset to make it match, but this feels like a temporary fix (it resets every time I modify another of the report's dataset).
It definitely seems as if this is being cached somewhere, but where? And how can I reset this? I would appreciate any help or guidance on this, as my forehead is pretty sore from banging it against this brick wall.
Cheers!
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Mar 24, 2007
for MS SQL 2000
I am trying to do a hierarchical table and i want to add a ON DELETE CASCADE
CREATE TABLE [dbo].[Users](
[id_Users] [int] IDENTITY(1,1) NOT NULL PRIMARY KEY CLUSTERED,
[id_UsersSup] [int] NULL,
[Users] [nvarchar] (100) NOT NULL
) ON [PRIMARY]
ALTER TABLE [dbo].[Users] ADD
CONSTRAINT [FK_Users_Sup] FOREIGN KEY
(
[id_UsersSup]
) REFERENCES [Users] (
[id_Users]
)
ON DELETE CASCADE
but MS SQL refuse to create the foreign key
even if there is 4 levels under the deleted id_Users I want to delete all the rows on all levels under
thank you for helping
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Jan 16, 2008
I 've done a store procedure(SP), one for 7 report's.
The problem that i have is that the dataset doesn't refresh cols from the SP, how can i do ..i need all the columnsi n order to put them in the report.
Thks
Karla
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Jan 30, 2008
Hi All,
I have a Dataset. I use this dataset in my matrix for grouping based on the underlying table columns names. Users can add columns to the underlying table that the DataSet refers.
Now my problem is:
The data is grouped based on the column name selected from the parameter.
If the user adds a column to this table how will the dataset refresh so that it contains the newly added field for grouping data.
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Nov 2, 2009
the Dataset in my report doesn't update the fields' values from the database. I refresh the dataset manualy in the SQL Server Business Intelligence Development Studio to see the new values in the report.
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May 20, 2014
Can i refresh view through linked server? I have full rights to modify the view?
Ex:ABC.MNC_DB.dbo.sp_refreshview 'view_ABC'
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Jul 24, 2007
Can you use a DataTable to update an SQL Table and can it be done in a batch UPDATE as opposed to incrementing through every row using a stored procedure similar to UPDATE SQLTable SET Position = @Position WHERE ID = @ID?
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Jan 8, 2007
hi,
I have my database stored in the sqlserver 2005. Using the table name i am retrieving the table and it is displayed to the user in the form of datagridview.I am allowing the user to modify the contents of the table, including the headers. Is it possible for me to update the table straightway rather than giving a sql update command for each and every row of the table .
Pls reply asap....
-Sweety
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Jun 4, 2007
Stepping thru the code with the debugger shows the dataset rows being deleted.
After executing the code, and getting to the page presentation. Then I stop the debug and start the
page creation process again ( Page_Load ). The database still has the original deleted dataset rows.
Adding rows works, then updating works fine, but deleting rows, does not seem to work.
The dataset is configured to send the DataSet updates to the database. Use the standard wizard to create the dataSet.
cDependChildTA.Fill(cDependChildDs._ClientDependentChild, UserId); rowCountDb = cDependChildDs._ClientDependentChild.Count; for (row = 0; row < rowCountDb; row++) { dr_dependentChild = cDependChildDs._ClientDependentChild.Rows[0]; dr_dependentChild.Delete(); //cDependChildDs._ClientDependentChild.Rows.RemoveAt(0); //cDependChildDs._ClientDependentChild.Rows.Remove(0); /* update the Client Process Table Adapter*/ // cDependChildTA.Update(cDependChildDs._ClientDependentChild); // cDependChildTA.Update(cDependChildDs._ClientDependentChild); }
/* zero rows in the DataSet at this point */ /* update the Child Table Adapter */ cDependChildTA.Update(cDependChildDs._ClientDependentChild);
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Jan 31, 2008
I'm importing XML file into DataTable and need to Insert Data into SQL Table.
I'm not sure if its posible to take a DataTable with Data and insert into DataAdapter. From there i wanted to update SQL using TableAdapter?
Any Tips?
Thanks,
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Jun 9, 2006
Recently I was in need of a hierarchical tree data. I learned about CTE and how they can be used to build hierarchical data with simple syntax. I used CTE and was through with the task. Later during free time, I tried to compare CTE approach with the traditional SQL 2K Table Function approach. It was surprising to see the query costs when I ran both the modes at one go...
Query Cost (relative to batch) : 0.49%
Query Text : Select * From fn_GetTree(8);
Query Cost (relative to batch) : 99.51%
Query Text : with treedata (id, parentid, status, prevStatus, lvl) as (select ...)
What does that indicate? Does it mean that the Table Function approach is much faster than CTE? I am sure that I was not making unwanted Joins in the CTE mode.
Can someone explain why that huge difference is there? And what the scenarios where CTE is better over Table Functions?
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Aug 14, 2006
Hi All,
I am new to development of asp. I have an SQLDataSource set as the data source for a grid view. When I click on the edit link in the Gridview, change the data, and click update, the old data is still displayed in the row.
I found exact same issue as here -- http://forums.asp.net/thread/1217014.aspx
Solution in the above thread is to add this
{ if (reader != null) reader.Close(); } conn.Close();
How do I apply above solution in my situation ?
I am updating through stored procedure.and don't have code at background. My code is
Datasource :
<asp:SqlDataSource
ID="ds"
runat="server"
ConnectionString="<%$ ConnectionStrings:ds %>"
CancelSelectOnNullParameter="False"
ProviderName="<%$ ConnectionStrings:ds.ProviderName%>"
UpdateCommand="usp_save"
UpdateCommandType="StoredProcedure"
EnableCaching="False">
<UpdateParameters>
<asp:Parameter Name="field1" Type="String" />
<asp:Parameter Name="field2" Type="String" />
<asp:Parameter Name="field3" Type="String" />
<asp:Parameter Name="field4" Type="String"/>
<asp:ControlParameter Name="field5" Type="String" ControlID = "label7" />
</UpdateParameters>
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Apr 18, 2006
Hi All,
Is it possible to refresh the web page when certain table data is updated? And I cannot use the auto-refresh feature. Thank you very much.
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May 5, 2004
Hello,
I have a table which gets updated roughly every 6 seconds with data. I have setup an aspx page with a datagrid to meta tag refresh every 3 seconds.
Because the data sometimes stops for a couple of minutes or even hours, I was thinking of a way to update/refresh the aspx page only when the table data gets entered ( to stop page flickering every 3 seconds).
I was thinking about a stored procedure and using an on update procedure.
Does anyone have any preffered methods or suggestions on the best way to accomplish this task.
I use VB.Net
Thanks
Goong
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Jun 22, 2006
Hello
I have a
question about the new Integration Services of the MS SQL Server 2005.
Situation:
- SQL
Server 2005 (standard edition)
- 2 tables with
identical structure (same attributes)
- the table
€žTestSource€œ will be constantly extend (new records & updates).
- the table
€žTestDestination€œ will just be refreshed by SSIS (Data Warehouse table)
I would like
to create a Integration Service, witch refreshes the table €žTestDestination€œ with
the data from table €žTestSource€œ.
Existing records
(ID already exists) should be updated (UPDATE), not existing records should be
created (INSERT).
I would
like to use the IS Data Flow Task, because in future i won€™t just copy the data.
I also will use Toolbox items like €žData Conversion€œ, €žDerived Column€œ and so
on.
Alike I
won€™t use an easy SQL-Query, because it would be complicated to make changes
and to Log the transactions.
Just clear
and refill the whole table is not possible because of performance and availability
requests (large data).
Question:
How can I
implement this workflow as Data Flow in a Integration Service?
Witch
components from the Toolbox do I need?
Greetings
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Sep 3, 2007
Filling a DataTable from SqlQuery : If SqlQuery returns some null values problem ocurrs with DataTable.
Is it possible using DataTable with some null values in it?
Thanks
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Oct 23, 2014
I have 2 tables, #MainSample and #SampleCode
In the #MainSample, Line_ID is the Primary key
Line_ID BegMeasure EndMeasure
656 0.00 254500.00
657 0.00 7000.00
658 0.00 308000.00
659 0.00 20000.00
#Sample Code
Line_ID BegMeasure EndMeasure Code
659 665.00 9456.00 APL-XL
657 0.00 200 BHP
From this, I have to find out the segments for which there is no defined code value. I want the output as
Line_ID BegMeasure EndMeasure
656 0.00 254500.00
657 200.00 7000.00
658 0.00 308000.00
659 0.00 665.00
659 9456.00 20000.00
How to achieve this?
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Nov 3, 2014
I am trying to find a way to provide three metrics for a table that only provides 2 of them. I need to derive a third column which tallies based on conditions that can be found in the dataset.
The table I'm querying shows
(1) total referrals
(2) total moves
but it is missing a column that tallies whenever the referral moved into the same property_id that it was referred to.
create table dimFacts
(date_value datetime
, month_name varchar(9)
, year_number varchar(4)
, month_number tinyint
[Code] ....
How can I use sql to create one additional column for the above data set, ie. let's call it 'property_conversion' such that on the fifth row there will be a '1' showing that on 2012-12-30 lead_id 10038655 moved into the property it was referred to back on 2012-10-15 ?
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Apr 17, 2015
I am supposed to delete all rows from USER and its child tables based on PracticeID = '55' filter condition.
I have dynamically generated queries to delete child table first followed by parent. Table [EncounterSignOff] si child and [User] is parent.
I would like to know, whether the Query 1 is valid for deleting child records?
Query:1
DELETE Top(100000) FROM [dbo].[EncounterSignOff]
FROM [dbo].[User] INNER JOIN [dbo].[EncounterSignOff] ON [User].[UserID] = [EncounterSignOff].[UserId]
WHERE [User].PracticeID = '55';
Query:2
DELETE Top(100000) FROM [dbo].[User] WHERE [User].PracticeID = '55';
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May 2, 2014
using below query
DELETE FROM Table_name
WHERE Date_column < GETDATE() - 30
am able to delete old records morethan 30 days, but i want to results to be saved in file.
before deleting i want to a craete a file and save the to be deleted records.
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Feb 26, 2007
Hi, I am trying to figure out how to update a dataset. Below is my sample code but it gives me this error on the mySqlDataAdapter.Update line.Dynamic SQL generation for the UpdateCommand is not supported against a SelectCommand that does not return any key column information. I looked around and it seems like I'm supposed to add a Primary Key but I did that and still get nothing. Below is my page load code... it is based on the quickstart at http://quickstarts.asp.net/QuickStartv20/howto/doc/adoplus/UpdateDataFromDB.aspx but I'm still having trouble and not sure what I'm missing. 1 // Create a new Connection and SqlDataAdapter
2 SqlConnection myConnection = new SqlConnection("Server=localhost;uid=user;pwd=password;database=northwind");
3 SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter("Select * from Customers", myConnection);
4 DataSet myDataSet = new DataSet();
5 DataRow myDataRow;
6
7 // Create command builder. This line automatically generates the update commands
8 // for you, so you don't have to provide or create your own.
9 SqlCommandBuilder mySqlCommandBuilder = new SqlCommandBuilder(mySqlDataAdapter);
10
11 // Set the MissingSchemaAction property to AddWithKey because Fill will not cause
12 // primary key & unique key information to be retrieved unless AddWithKey is specified.
13 mySqlDataAdapter.MissingSchemaAction = MissingSchemaAction.AddWithKey;
14 mySqlDataAdapter.Fill(myDataSet, "Customers");
15
16 showData(myDataSet);
17
18 // Set PK of table to CustomerID ??
19 DataColumn[] pk = new DataColumn[1];
20 pk[0] = myDataSet.Tables["Customers"].Columns["CustomerID"];
21 myDataSet.Tables["Customers"].PrimaryKey = pk;
22
23 // Edit some data
24 myDataSet.Tables["Customers"].Rows[0]["ContactName"] = "Maria Anders2";
25 //DataRow myDataRow1 = myDataSet.Tables["Customers"].Rows.Find("ALFKI");
26 //myDataRow1["ContactName"] = "Maria Anders2";
27
28 showData(myDataSet);
29
30 //Update DB
31 mySqlDataAdapter.Update(myDataSet, "Customers");
32 Thanks!
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May 20, 2015
Assuming I have a table similar to the following:
Auto_ID Account_ID Account_Name Account_Contact Priority
1 3453463 Tire Co Doug 1
2 4363763 Computers Inc Sam 1
3 7857433 Safety First Heather 1
4 2326743 Car Dept Clark 1
5 2342567 Sales Force Amy 1
6 4363763 Computers Inc Jamie 2
7 2326743 Car Dept Jenn 2
I'm trying to delete all duplicate Account_IDs, but only for the highest priority (in this case it would be the lowest number).
I know the following would delete duplicate Account_IDs:
DELETE FROM staging_account
WHERE auto_id NOT IN
(SELECT MAX(auto_id)
FROM staging_account
GROUP BY account_id)
The problem is this doesn't take into account the priority; in the above example I would want to keep auto_ids 2 and 4 because they have a higher priority (1) than auto_ids 6 and 7 (priority 2).
How can I take priority into account and still remove duplicates in this scenario?
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Jul 23, 2005
I know this is very very silly.But I am stuck and don't know what to do.I have a simple form which has 1 textbox and a 'Save' button.I have created a Database connection and an Adapter with Dataset withthe help of Wizards.I have binded by text box control to one of the database field.When the form gets loaded it displays the field information correctly."Me.SqlDataAdapter1.Fill(DsBasicData1)"However, when I press the save button it does not update the databasebehind it.I have given the following code to the click event of save button."Me.SqlDataAdapter1.Update(DsBasicData1)"Strangely I don't know why the code does not work.
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Oct 21, 2014
Im trying to delete duplicate records from the output of the query below, if they also meet certain conditions ie 'different address type' then I would merge the records. From the following query how do I go about achieving one and/or the other from either the output, or as an extension of the query itself?
SELECT
a1z103acno AccountNumber
, a1z103frnm FirstName
, a1z103lanm LastName
, a1z103ornm OrgName
, a3z103adr1 AddressLine1
, A3z103city City
, A3z103st State
[code]...
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Apr 8, 2015
I have a database with many tables. I would like to Delete all rows with practiceID=55 from all Parents tables and all corresponding rows from its child tables. Tables are linked with foreign key constraints (but there is no ON DELETE CASCADE).
How to write a generalized code for removing rows from both parent and child tables.
Query should pick parent table one by one and delete rows with practiceID=55 and all corresponding rows from its child tables
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