Hi SQL fans,I realized that I often encounter the same situation in a relationdatabase context, where I really don't know what to do. Here is anexample, where I have 2 tables as follow:__________________________________________ | PortfolioTitle|| Portfolio |+----------------------------------------++-----------------------------+ | tfolio_id (int)|| folio_id (int) |<<-PK----FK--| tfolio_idfolio (int)|| folio_name (varchar) | | tfolio_idtitle (int)|--FK----PK->>[ Titles]+-----------------------------+ | tfolio_weight(decimal(6,5)) |+-----------------------------------------+Note that I also have a "Titles" tables (hence the tfolio_idtitlelink).My problem is : When I update a portfolio, I must update all theassociated titles in it. That means that titles can be either removedfrom the portfolio (a folio does not support the title anymore), addedto it (a new title is supported by the folio) or simply updated (atitle stays in the portfolio, but has its weight changed)For example, if the portfolio #2 would contain :[ PortfolioTitle ]id | idFolio | idTitre | poids1 2 1 102 2 2 203 2 3 30and I must update the PortfolioTitle based on these values :idFolio | idTitre | poids2 2 202 3 352 4 40then I should1 ) remove the title #1 from the folio by deleting its entry in thePortfolioTitle table2 ) update the title #2 (weight from 30 to 35)3 ) add the title #4 to the folioFor now, the only way I've found to do this is delete all the entriesof the related folio (e.g.: DELETE TitrePortefeuille WHERE idFolio =2), and then insert new values for each entry based on the new givenvalues.Is there a way to better manage this by detecting which value has to beinserted/updated/deleted?And this applies to many situation :(If you need other examples, I can give you.thanks a lot!ibiza
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);
I have an existing call to a webservice that updates an MDB with data from a dataset. I was now moving to a process using SQL Compact Edition sdf instead of an mdb.
I belive I have to DROP/Truncate the table in the SDF file, then create a new table then somehow insert the results of the retrieved dataset into the new table. DOes anybody have any pointers to help me out?
Here is my old way of doing it, using access.
Thanks.
Private Sub retrieveData(ByVal intMode As Integer) 'This process will call a webservice passing a parameter which in turn executes a SQL stored procedure, returning a dataset Dim MyObj As localhost.Service1 = New localhost.Service1 Dim ds As DataSet ds = MyObj.RetrieveSQLdata(txtSecureString, intMode) Dim myConnection As OleDbConnection Dim cmd As OleDbCommand = New OleDbCommand Dim Connstr As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Path & FileName & ";Persist Security Info=False" myConnection = New OleDbConnection(Connstr) myConnection.Open() cmd.Connection = myConnection Dim mystr As String = "" For Each row As DataRow In ds.Tables(0).Rows mystr = "" mystr = mystr & "INSERT INTO CustMast ( " mystr = mystr & "StoreNo, CustNo, ShipNo" mystr = mystr & "values(" mystr = mystr & "'" & row("StoreNo").ToString & "', " mystr = mystr & "'" & row("CustNo").ToString & "', " mystr = mystr & "'" & row("ShipNo").ToString & "')" cmd.CommandText = mystr cmd.ExecuteNonQuery() Next System.Windows.Forms.Application.DoEvents() cmd.Dispose() myConnection.Close() myConnection.Dispose()
In order to update a MSSQL table, named [Table_1]. The procedure is: (@id int,@Field0 nvarchar(1000) = NULL,@Field1 nvarchar(1000) = NULL,... ...@Field9 nvarchar(1000) = NULL)Method 1: UPDATE Table_1SET Field0 = CASE WHEN @Field0 IS NULL THEN Field0 ELSE @Field0 END, Field1 = CASE WHEN @Field1 IS NULL THEN Field1 ELSE @Field1 END, ... ... Field9 = CASE WHEN @Field9 IS NULL THEN Field9 ELSE @Field9 ENDWHERE id = @id Method 2 IF @Field0 IS NOT NULL UPDATE Table_1 SET Field0 = @Field0 WHERE id = @id ... ... UPDATE Table_1 SET Field9 = @Field9 WHERE id = @id Method 3: DECLARE @SQL nvarchar(max)DECLARE @NeedComma bitSET @SQL = 'UPDATE Table_1 SET 'SET @NeedComma = 0IF @Field0 IS NOT NULL BEGIN IF @NeedComma = 1 SET @SQL = @SQL + ', ' SET @SQL = @SQL + 'Field0 = @Field0' SET @NeedComma = 1 END... ...IF @Field9 IS NOT NULL BEGIN IF @NeedComma = 1 SET @SQL = @SQL + ', ' SET @SQL = @SQL + 'Field9 = @Field9' SET @NeedComma = 1 ENDSET @SQL = @SQL + ' WHERE id = @id'EXEC sp_executeSQL @SQL, N'@id int,@Field0 nvarchar(1000), ... ... , @Field9 nvarchar(1000)', @id = @id, @Field0 = @Field0, ... ... , @Field9 = @Field9
Using VS 2008 Beta 2, SQL CE 3.5, on desktop, and Typed Datasets: The INSERT command of dataset table adapter does not return the updated identity of inserted row. Why?
also every time I want to modify the insert command to return the updated identity of inserted row, i get the error: "Unable to parse query text."
Hi guys, may I know is it possible to create an update trigger like this ? Assuming there are two database, database A and database B and both are having same tables called 'Payments' table. I would like to update the Payments records on database A automatically after Payments records on database B had been updated. I can't use replication because both tables might having different records and some records are the same. Hope can get any assistance here, thank you.
Hi, I have an application where I'm filling a dataset with values from a table. This table has no primary key. Then I iterate through each row of the dataset and I compute the value of one of the columns and then update that value in the dataset row. The problem I'm having is that when the database gets updated by the SqlDataAdapter.Update() method, the same value shows up under that column for all rows. I think my Update Command is not correct since I'm not specifying a where clause and hence it is using just the value lastly computed in the dataset to update the entire database. But I do not know how to specify a where clause for an update statement when I'm actually updating every row in the dataset. Basically I do not have an update parameter since all rows are meant to be updated. Any suggestions? SqlCommand snUpdate = conn.CreateCommand(); snUpdate.CommandType = CommandType.Text; snUpdate.CommandText = "Update TestTable set shipdate = @shipdate"; snUpdate.Parameters.Add("@shipdate", SqlDbType.Char, 10, "shipdate"); string jdate =""; for (int i = 0; i < ds.Tables[0].Rows.Count - 1; i++) { jdate = ds.Tables[0].Rows[i]["shipdate"].ToString(); ds.Tables[0].Rows[i]["shipdate"] = convertToNormalDate(jdate); } da.Update(ds, "Table1"); conn.Close();
We are trying to update a changed DataSet to at table in MSSQL server
The table have an XML field and that gets converted to System.String when we get from the DB when we try to save the dataset the XML field ind the table is set to NULL
How can this be, the DataSet can convert it to System.String when we SELECT it from the DB, but when we save, nothing happens and we get an empty field. Not even an SQL error...
The Folowing code is not working anymore. (500 error)
Set objRS = strSQL1.Execute strSQL1 = "SELECT * FROM BannerRotor where BannerID=" & cstr(BannerID) objRS.Open strSQL1, objConn , 2 , 3 , adCmdText If not (objRS.BOF and objRS.EOF) Then objRS.Fields("Exposures").Value =objRS.Fields("Exposures").Value + 1 objRS.update End If objRS.Close
The .execute Method works fine
strSQL1 = "UPDATE BannerRotor SET Exposures=Exposures+1 WHERE BannerID=" & cstr(BannerID) objConn.Execute strSQL1
I am creating update trigger(After) on a table.I want to catch an updated row and insert the values of this row into a new table.How can i catch this row while creating a trigger after update.
I want to update several columns in different tables whenever an update is happend on specific table. I have a trigger for that which update all the relevant places when it fires.
I want to do this update only if certains columns were changed, otherwise - do anything, to reduce performance.
How Can I know which columns were updated inside the trigger? The tables has many columns and only if 2 of them were changed then I need to update other tables.
I wrote a stored proc to be implemented in a datagrid. I went and used it on a record to update some information and it updated THE WHOLE DATABASE WITH THAT ONE RECORD..
IF anyone could shead some light on what I'm doing wrong that would be great.
Using MS SQL 2000I have a stored procedure that processes an XML file generated from anAudit program. The XML looks somewhat like this:<ComputerScan><scanheader><ScanDate>somedate&time</ScanDate><UniqueID>MAC address</UniqueID></scanheader><computer><ComputerName>RyanPC</ComputerName></computer><scans><scan ID = "1.0" Section= "Basic Overview"><scanattributes><scanattribute ID="1.0.0.0" ParentID=""Name="NetworkDomian">MSHOMe</scanattribute>scanattribute ID = "1.0.0.0.0" ParentID="1.0.0.0", etc etc....This is the Update portion of the sproc....CREATE PROCEDURE csTest.StoredProcedure1 (@doc ntext)ASDECLARE @iTree intDECLARE @assetid intDECLARE @scanid intDECLARE @MAC nvarchar(50)CREATE TABLE #temp (ID nvarchar(50), ParentID nvarchar(50), Namenvarchar(50), scanattribute nvarchar(50))/* SET NOCOUNT ON */EXEC sp_xml_preparedocument @iTree OUTPUT, @docINSERT INTO #tempSELECT * FROM openxml(@iTree,'ComputerScan/scans/scan/scanattributes/scanattribute', 1)WITH(ID nvarchar(50) './@ID',ParentID nvarchar(50) './@ParentID',Name nvarchar(50) './@Name',scanattribute nvarchar(50) '.')SET @MAC = (select UniqueID from openxml(@iTree, 'ComputerScan',1)with(UniqueID nvarchar(30) 'scanheader/UniqueID'))IF EXISTS(select MAC from tblAsset where MAC = @MAC)BEGINUPDATE tblAsset set DatelastScanned = (select ScanDate fromopenxml(@iTree, 'ComputerScan', 1)with(ScanDate smalldatetime'scanheader/ScanDate')),LastModified = getdate() where MAC =@MACUPDATE tblScan set ScanDate = (select ScanDate fromopenxml(@iTree,'ComputerScan', 1)with(ScanDate smalldatetime 'scanheader/ScanDate')),LastModified = getdate() where MAC =@MACUPDATE tblScanDetail set GUIID = #temp.ID, GUIParentID =#temp.ParentID, AttributeValue = #temp.scanattribute, LastModified =getdate()FROM tblScanDetail INNER JOIN #tempON (tblScanDetail.GUIID = #temp.ID ANDtblScanDetail.GUIParentID =#temp.ParentID AND tblScanDetail.AttributeValue = #temp.scanattribute)WHERE MAC = @MAC!!!!!!!!!!!!!!!!!! THIS IS WHERE IT SCREWS UP, THIS NEXT INSERTSTATEMENT IS SUPPOSE TO HANDLE attributes THAT WERE NOT IN THE PREVIOUSSCAN SO CAN NOT BE UDPATED BECAUSE THEY DON'T EXISTYET!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!INSERT INTO tblScanDetail (MAC, GUIID, GUIParentID,ScanAttributeID,ScanID, AttributeValue, DateCreated, LastModified)SELECT @MAC, b.ID, b.ParentID,tblScanAttribute.ScanAttributeID,@scanid, b.scanattribute, DateCreated = getdate(), LastModified =getdate()FROM tblScanDetail LEFT OUTER JOIN #temp a ON(tblScanDetail.GUIID =a.ID AND tblScanDetail.GUIParentID = a.ParentID ANDtblScanDetail.AttributeValue = a.scanattribute), tblScanAttribute JOIN#temp b ON tblScanAttribute.Name = b.NameWHERE (tblScanDetail.GUIID IS NULL ANDtblScanDetail.GUIParentID ISNULL AND tblScanDetail.AttributeValue IS NULL)ENDELSEBEGINHere are a few table defintions to maybe help out a little too...if exists (select * from dbo.sysobjects where id =object_id(N'[dbo].[FK_tblScan_tblAsset]') and OBJECTPROPERTY(id,N'IsForeignKey') = 1)ALTER TABLE [dbo].[tblScan] DROP CONSTRAINT FK_tblScan_tblAssetGOif exists (select * from dbo.sysobjects where id =object_id(N'[dbo].[tblAsset]') and OBJECTPROPERTY(id, N'IsUserTable') =1)drop table [dbo].[tblAsset]GOCREATE TABLE [dbo].[tblAsset] ([AssetID] [int] IDENTITY (1, 1) NOT FOR REPLICATION NOT NULL ,[AssetName] [nvarchar] (50) COLLATESQL_Latin1_General_CP1_CI_AS NULL,[AssetTypeID] [int] NULL ,[MAC] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,[DatelastScanned] [smalldatetime] NULL ,[NextScanDate] [smalldatetime] NULL ,[DateCreated] [smalldatetime] NULL ,[LastModified] [smalldatetime] NULL ,[Deleted] [bit] NULL) ON [PRIMARY]GO-----------------------------if exists (select * from dbo.sysobjects where id =object_id(N'[dbo].[tblScan]') and OBJECTPROPERTY(id, N'IsUserTable') =1)drop table [dbo].[tblScan]GOCREATE TABLE [dbo].[tblScan] ([ScanID] [int] IDENTITY (1, 1) NOT FOR REPLICATION NOT NULL ,[AssetID] [int] NULL ,[ScanDate] [smalldatetime] NULL ,[AssetName] [nvarchar] (50) COLLATESQL_Latin1_General_CP1_CI_AS NULL,[MAC] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,[DateCreated] [smalldatetime] NULL ,[LastModified] [smalldatetime] NULL ,[Deleted] [bit] NOT NULL) ON [PRIMARY]GO----------------------------if exists (select * from dbo.sysobjects where id =object_id(N'[dbo].[tblScanDetail]') and OBJECTPROPERTY(id,N'IsUserTable') = 1)drop table [dbo].[tblScanDetail]GOCREATE TABLE [dbo].[tblScanDetail] ([ScanDetailID] [int] IDENTITY (1, 1) NOT FOR REPLICATION NOTNULL ,[ScanID] [int] NULL ,[ScanAttributeID] [int] NULL ,[MAC] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,[GUIID] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_ASNOT NULL,[GUIParentID] [nvarchar] (50) COLLATESQL_Latin1_General_CP1_CI_ASNULL ,[AttributeValue] [nvarchar] (50) COLLATESQL_Latin1_General_CP1_CI_ASNULL ,[DateCreated] [smalldatetime] NULL ,[LastModified] [smalldatetime] NULL ,[Deleted] [bit] NOT NULL) ON [PRIMARY]GO------------------------------------------------------------My problem is that Insert statement that follows the update intotblScanDetail, for some reason it just seems to insert everything twiceif the update is performed. Not sure what I did wrong but any helpwould be appreciated. Thanks in advance.
on insert in a new table a have to change one column before insert.
I wrote this trigger:
create trigger SUBSCR_ID_TRANSFER ON dbo.SalesOrderExtensionBase AFTER INSERTAS BEGIN SET NOCOUNT ON;DECLARE @OpportunityID uniqueidentifier;DECLARE @subscrId uniqueidentifier;declare @salesorderid uniqueidentifier;set @salesorderid = (select SalesorderID from inserted)SET @OpportunityID = (SELECT OpportunityId FROM SalesOrderBase where SalesOrderID=@salesorderid)SET @subscrId = (SELECT New_old_subscridId from OpportunityExtensionbase where OpportunityID=@OpportunityID)Update inserted set New_old_subscridId = @subscrIdENDbut SQL Rise the error "The inserted values can not be modified"
Im using a trigger to check updates on particular table and execute a email. it works but it doesnt show the right record im looking into one table called SiteInfo. here is my code Im using sql 2005, can someone look at my code or the select statement.
I know 2008 MS SQL Server has a timestamp data type that adds date and time when the rows are inserted. Is there a way to automatically update the date and time when the rows are updated?
I'm working on databases where statistics of some indexes (tables) are changing too frequently. Once I update them manually, one minute after they get 10-20% change, and five minutes after they get over 100% change. Tables get updated very frequently (multiple times in a second).
When I run a query to read from sys.stats, sys.dm_db_stats_properties and other dynamic views, I see that they were last updated when I did it manually, but the change rate overpassed the 500+20% (tables have multiples of 10K rows). Auto create and update statistics are set to true on all databases, and I don't know why sql server does not do that automatically.
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!
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.
How can I determine who and when a table in a db was updated, I dont need this per record, I only need to know the last time an update was made to a table. Thanks.
I have a table written in to sql by the program Wincc flex wich is currently constantly saving data in to it. I want to reed this data back in to Labview and update it’s content on Labview constantly to plot a graph that keeps updating over time.
I have achieved this after some research but my problem is that I need a way of just reading the last row (meaning most recent row, not last row as the bottom one) inserted in to the table written by wincc and saved in sql WITHOUT having to read all the data and selecting for example the higest value of a timestamp column (which is added by wincc) because this would cause too much lag since the table has a lot of elements and I need to constantly read it. One of the main problems is that the data written by wincc is written in a circular buffer, which does delete 20% of the data when it fill’s up and start writing new data in to the free space, so that the temporal order of the data does nothing to do (at least nothing simple) with the index order in the table. Is there anything like a method to save the index of the last row modified in the table so that labview could read it and directly access the most recent recordset in the table just by index specification on a query?
I am writing a generic trigger in VS 2005 that selects records from the inserted table, and updates an audit table. I am, however, unable to retrieve the name of the table that the insert occurred on. I am using the following code to select the records, and obtain the name.. Can anyone offer any alternatives to accomplishing this task? Thanks in advnace for any help you can provide.
Craig
SqlDataAdapter tableLoader = new SqlDataAdapter("SELECT * FROM inserted", connection);
I have a gridview and a dataset. When I start my application I see the results in my gridview. When I clic on edit and chanche some value and click on update it wil give me this error:ObjectDataSource 'ObjectDataSourcePersoon' could not find a non-generic method 'Update' that has parameters: naam, tussenvoegsel, achternaam, adres, woonplaats, telefoonnummer, original_id, Original_naam, Original_tussenvoegsel, Original_achternaam, Original_adres, Original_woonplaats, Original_telefoonnummer. Does someone know whats the problem??
hello all.. i want to update my table information with the value which is currently inserted/updated in another table dynamically..how to get the value of a currently inserted single cell in that table..? table1 contains Refno,.....Refno is primarykey,identity table 2 contains uploadID,....uploadID is primary key,identity table3 contains RefNo,UploadID(both r foriegn keys corresponding to table1 & table2) how to fill table3 with values(not manually) when i am inserting records into table1 n table2 ..( refno and uploadId are identity columns )..Any Idea..?
Hi all, i have a table1 with 3,25,000 records in US database.i want to upadate this table information in to table2 in SG database based on some condition (if prodid and skuno match in both tables, then update ordertransferind column in table2 from table1) what is happening is after 10,000 records query is not executing. in status bar it is displaying 'done'. but only 10,000 records are updating not the remaining ones. for this 10,000 records also it is taking more than 1 hour time. i tried by incresing the commandTimeout to max value(99999)...but still it is same...any advise...please suggest... i am using sql2005,visualstudio 2005.... thanks for the help..
