whats the best way to delete a parent record?
for now what i am doing is to have a special delete page (means not DetailsView/GridView) just to delete parent records so user can see what child records will be deleted too. is the a better way?
my code below:
The T-SQL Stored Procedure
ALTER PROCEDURE dbo.DeleteInventory
(
@InventoryID int
)
AS
DELETE FROM Booking
WHERE InventoryID = @InventoryID
DELETE FROM Inventory
WHERE InventoryID = @InventoryID
The code in the Code Behind to execute when a button(delete) click
Try
Dim temp As Integer = SqlDataSource4.Delete
If temp > 0 Then
lblDeleteDtatus.ForeColor = Drawing.Color.Blue
lblDeleteDtatus.Text = temp & " Records/Rows Deleted."
Else
lblDeleteDtatus.ForeColor = Drawing.Color.Orange
lblDeleteDtatus.Text = "No records Deleted!"
End If
Catch ex As Exception
lblDeleteDtatus.ForeColor = Drawing.Color.Red
lblDeleteDtatus.Text = "An Error Occured.<br />" & ex.Message.ToString
End Try any better methods anyone wants to share?
I'm trying to clean up a database design and I'm in a situation to where two tables need a FK but since it didn't exist before there are orphaned records.
Tables are:
Brokers and it's PK is BID
The 2nd table is Broker_Rates which also has a BID table.
I'm trying to figure out a t-sql statement that will parse through all the recrods in the Broker_Rates table and delete the record if there isn't a match for the BID record in the brokers table.
I know this isn't correct syntax but should hopefully clear up what I'm asking
Hi All,I have a table in SQL Server 2000 that contains several million memberids. Some of these member ids are duplicated in the table, and eachrecord is tagged with a 1 or a 2 in [recsrc] to indicate where theycame from.I want to remove all member ids records from the table that have arecsrc of 1 where the same member id also exists in the table with arecsrc of 2.So, if the member id has a recsrc of 1, and no other record exists inthe table with the same member id and a recsrc of 2, I want it leftuntouched.So, in a theortetical dataset of member id and recsrc:0001, 10002, 20001, 20003, 10004, 2I am looking to only delete the first record, because it has a recsrcof 1 and there is another record in the table with the same member idand a recsrc of 2.I'd very much appreciate it if someone could help me achieve this!Much warmth,Murray
I am importing data from a paradox table and trying to clean it up. I have this query that finds all the child records that are not in the parent table.
Select MemberID FROM memtype AS a WHERE NOT EXISTS (SELECT * FROM members AS b WHERE a.MemberID IN (b.MemberID));
Now I'm trying to delete all those child records instead of just selecting them so I tried...
Delete MemberID FROM memtype AS a WHERE NOT EXISTS (SELECT * FROM members AS b WHERE a.MemberID IN (b.MemberID));
dear friend,, i have two table.in my first table id is primarykey and in my second table id if foreign key. so my need i have to use one query to delete the primary key table values. so if i am deleting one id in primary key table the child in the second table has to be deleted automatically.if parent get deleted the child should get deleted automatically. so plese help me to do this please give me sample query please
Hi All, I have the following db design: a Primary table say CityTable CityId Pk CityName
SectorTable SectorID CityID FK to CityTable SectorName
MuncipalTable MunicipallD CityID FK to CityTable MuncipalName
CantonmentTable CantonmentlD CityID FK to CityTable CantonmentName
The CityId can spread across multiple tables. I would like to delete the record from CityTable if all references of CityId have been removed. For e.g CityTable CityId: 1, 2 CityName: Pune, Mumbai
So If I delete SectorID 1a, the CityTable should not delete its record since SectorID 2a and MuncipalID 2c and 3c are still referencing it. But If delete all the records from SectorTable and MuncipalTable referencing CityID 1 then the record from CityTable should get deleted. How can I achieve this using a SP? Please help.
Hi,I have a stored procedure that has to extract the child records forparticular parent records.The issue is that in some cases I do not want to extract all the childrecords only a certain number of them.Firstly I identify all the parent records that have the requird numberof child records and insert them into the result table.insert into t_AuditQualifiedNumberExtractDetails(BatchNumber,EntryRecordID,LN,AdditionalQualCritPassed)(select t1.BatchNumber,t1.EntryRecordID,t1.LN,t1.AdditionalQualCritPassedfrom(select BatchNumber,RecordType,EntryRecordID,LN,AdditionalQualCritPassedfrom t_AuditQualifiedNumberExtractDetails_Temp) as t1inner join(select BatchNumber,RecordType,EntryRecordID,Count(*) as AssignedNumbers,max(TotalNumbers) as TotalNumbersfrom t_AuditQualifiedNumberExtractDetails_Tempgroup by BatchNumber, RecordType, EntryRecordIDhaving count(*) = max(TotalNumbers)) as t2on t1.BatchNumber = t2.BatchNumberand t1.RecordType = t2.RecordTypeand t1.EntryRecordID = t2.EntryRecordID)then insert the remaining records into a temp table where the number ofrecords required does not equal the total number of child records, andthenloop through each record manipulating the ROWNUMBER to only selectthe number of child records needed.insert into @t_QualificationMismatchedAllocs([BatchNumber],[RecordType],[EntryRecordID],[AssignedNumbers],[TotalNumbers])(select BatchNumber,RecordType,EntryRecordID,Count(*) as AssignedNumbers,max(TotalNumbers) as TotalNumbersfrom t_AuditQualifiedNumberExtractDetails_Tempgroup by BatchNumber, RecordType, EntryRecordIDhaving count(*) <max(TotalNumbers))SELECT @QualificationMismatched_RowCnt = 1SELECT @MaxQualificationMismatched = (select count(*) from@t_QualificationMismatchedAllocs)while @QualificationMismatched_RowCnt <= @MaxQualificationMismatchedbegin--## Get Prize Draw to extract numbers forselect @RecordType = RecordType,@EntryRecordID = EntryRecordID,@AssignedNumbers = AssignedNumbers,@TotalNumbers = TotalNumbersfrom @t_QualificationMismatchedAllocswhere QualMismatchedAllocsRowNum = @QualificationMismatched_RowCntSET ROWCOUNT @TotalNumbersinsert into t_AuditQualifiedNumberExtractDetails(BatchNumber,EntryRecordID,LN,AdditionalQualCritPassed)(select BatchNumber,EntryRecordID,LN,AdditionalQualCritPassedfrom t_AuditQualifiedNumberExtractDetails_Tempwhere RecordType = @RecordTypeand EntryRecordID = @EntryRecordID)SET @QualificationMismatched_RowCnt =QualificationMismatched_RowCnt + 1SET ROWCOUNT 0endIs there a better methodology for doing this .....Is the use of a table variable here incorrect ?Should I be using a temporary table or indexed table if there are alarge number of parent records where the child records required doesnot match the total number of child records ?
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
The query repeats the Header row value for all children associated with the header.I need the output of the query in XML format such that..For every Header element in the XML, all its children should come under that header element//I am using -
SELECT Cols FROM Table Names FOR XML PATH ('Header'), root('root') , ELEMENTS XSINIL
This still repeats the header for each detail (in the XML) , but I need all children for a header under it.I basically want my output in this format -
I have a master table and i need to import the rows into the parent and child table.
Master table name is Flatfile_Inventory Parent Table name is INVENTORY Child Tables name are INVENTORY_AMOUNT,INVENTORY_DETAILS,INVENTORY_VEHICLE, Error details will be goes to LOG_INVENTORY_ERROR
I have 4 duplicate rows in the Flatfile_Inventory which i have already inserted in the Parent and child table.
Again when i run the query using stored procedure,its tells that all the 4 rows are duplicate and will move to the Log_Inventory_Error.
I need is if i have the duplicate rows in the flatfile_Inventory when i start inserting into the parent and child table the already inserted row have the unique ID i must identify it and delete that row in the both parent and chlid table.And latest row must get inserted into the Parent and child table from Flatfile_Inventory.
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
How can i delete a record from a table . table contains approx 3 million data and when i execute a query for delete it give error message from transaction log space problem. Is there any way to stop the log in transaction log and delete the record.
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
This one is driving me nuts. I've issued a very simple statement to delete a single row from a table. It appears that when I execute it in SQL Query Analyzer the CPUTime spikes and holds one of the CPUs on the box pegged at 100%. I've let this thing run for over a day, and it's not deleting the one damn record. Any thoughts? :confused: :confused: Here's the command I'm executing:
DELETE FROM Invoices WHERE InvoiceID = 153345
Running SELECT * FROM Invoices WHERE InvoiceID = 153345 returns only a single record as it should. InvoiceID is the PK in this table. Any and all help is greatly appreciated. I've rebooted the server, but to no avail. Same thing happens after a reboot.
Hi everyone... I have a problem on deleting a record. I accidentally duplicate the record. I need to delete other records and left only 1 record based on each date and employeenumber.
supposing i have a table hrempshiftschedule i have 3 fields... empno, shiftdate, and shifttype
Hi i have a very annying problem that i cant seem to solve by myself. I have developed a content managment system for a webpage where people can manage the page. It's almost done except for the fact that i cant seem to delete records from my sql express database. To access the database i use an sql login in my code to delete witchever record is retrived from a querystring in the URL field. Below is a sample of my delete code when a button is pressed. protected void ButtonDelete_Click(object sender, EventArgs e) { string dID = Request.QueryString["dID"];
string myConnectionString = @"Data Source=SRVWEBSQLEXPRESS;Initial Catalog=se;User ID=xx;Password=xx"; SqlConnection myConnection = new SqlConnection(myConnectionString); string myDeleteQuery = "DELETE FROM drift WHERE dID = @dID"; SqlCommand myCommand = new SqlCommand(myDeleteQuery); myCommand.Parameters.AddWithValue("dID", dID);
Response.Redirect("list.aspx"); } When the i run the code on my development machine located at 10.12.0.80 and the server is located at 10.12.1.65 and this is where the databse is located. The strangest thing is that when i press my deletebutton while debugging in VS2008 on my devmachine the record is deleted! BUT when i run the code live on the server i get an error. See the below log file taken from the windows 2003 server application log. Event Type: InformationEvent Source: ASP.NET 2.0.50727.0Event Category: Web Event Event ID: 1314Date: 2008-04-07Time: 10:26:45User: N/AComputer: SRVWEBDescription:Event code: 4011 Event message: An unhandled access exception has occurred. Event time: 2008-04-07 10:26:45 Event time (UTC): 2008-04-07 08:26:45 Event ID: 8bdda96aeee44448b570891c593bdb3e Event sequence: 242 Event occurrence: 1 Event detail code: 0 Application information: Application domain: /LM/W3SVC/1015505475/Root-1-128520196339603398 Trust level: Full Application Virtual Path: / Application Path: C:wwwwebsite Machine name: SRVWEB Process information: Process ID: 5156 Process name: w3wp.exe Account name: NT AUTHORITYNETWORK SERVICE Request information: Request URL: http://website/cms/drift/editdrift.aspx?dID=19 Request path: /cms/drift/editdrift.aspx User host address: 10.12.1.1 User: webmaster Is authenticated: True Authentication Type: Forms Thread account name: NT AUTHORITYNETWORK SERVICE Could anyone help me solve this problem. Thanks.
If I script the SQL statement with a constant, deleting the record from the database works.
If I script the SQL statement to delete based on the WHERE clause being a variable name, it will not delete the record.
The value being compared in the WHERE clause comes directly from the Sequel database.
I have a dropdown box that is filled from the database. The dropdown1.selecteditem.text is placed in a variable. The script is to delete a record from the database where the table.name in the database equals the item name selected from the dropdown box.
This querystring does not delete the record from the database:
dim queryString As String = "DELETE FROM [Table1] WHERE ([Table1].[name] = 'variableCompareText')"
This querystring does delete the recrod from the database:
dim queryString As String = "DELETE FROM [Table1] WHERE ([Table1].[name] = 'John')"
Why can't I delete a record with a variable in the querystring? Otherwise, you would have to always know in advance which record to specify rather than being deleted dynamically.
I'm having trouble with the below sql command. What I'm trying to do is to delete records from tblPhotoHeader table where there are no corresponding child records in tblPhoto.
The select statement works correctly, I'm just not sure about how to apply the syntax to correctly select the records in the delete statement.
Any help from the experts here would be helpful.
Thanks
Tom
--------------------------------------------------------------------- DELETE FROM tblPhotoHeader WHERE Exists
Well, I really messed up. Instead of changing the name of a current company record in a table I changed ALL the company names in the table. Me.CustomerDataSource.SelectCommand = "UPDATE tbl_customers SET company = '" & companyTextBox.Text & "'" So, I need to insert a WHERE clause to fix this. My problem is that I've been searching everywhere for this simple command structure and cannot find anything that specifically addresses a simple way to reference the current record. I tried...Me.CustomerDataSource.SelectCommand = "UPDATE tbl_customers SET company = '" & companyTextBox.Text & "' WHERE recno = @recno" But I get the error: Exception Details: System.Data.SqlClient.SqlException: Must declare the scalar variable "@recno". Can anyone provide this simple query clause?
I have a table with a large number of records that I need to delete, before attempt to perform the delete I also archived the records to another table.
So I need to delete all of these selected records stored in the archive table from the main table. I can now reference all the records that qualify for the delete in the main table by performing a join on the archive table like so:
select * from my_main_table a join my_archive_table b on a.distinct_id=b.distinct_id and a.surrogate_key=b.surrogate_key and a.identifier=b.indentifier
So all the records check out to be the ones I'd like to perform a delete on but I just can't figure out how to perform a delete of the records with little or no change to the existing query.
Obviously something like this won't work:
delete from my_main_table a join my_archive_table b on a.distinct_id=b.distinct_id and a.surrogate_key=b.surrogate_key and a.identifier=b.indentifier
Though it would be nice if it did.:D
So my question is how would I use the existing query with some modification to delete only the records that this query returns. I've tried selection of records in the main table based on the existing records in the archive table but it can return a higher number of records than what I know is expected. I actually need the join specified to be in place to do it.
Hi.I have a "union" table which results of a union of two tables.Occasionally I could have duplicates, when the same PIN has been addedto both tables, albeit at different Datees/Times, such as:PINNameAdded Date100411A7/11/2007 10:12:58 AM100411A7/17/2007 10:54:23 AM100413B7/11/2007 10:13:28 AM100413B7/17/2007 10:54:39 AM104229C7/6/2007 2:34:13 PM104231D7/6/2007 2:34:25 PM104869E6/10/2007 11:59:12 AM104869E6/22/2007 2:40:18 PMThe question is - how can I delete by queries the first occurence(time-wise) of these duplicates - i.e. I would want to delete thefirst occurence of 100411 (A), the first occurence of 100413 (B), andthe first occurence of 104869 (E) in the example above - records C andD show only once, so they are fine.Is there a MsAccess solution ? Is there a SQL-server solution ?Thank you very much !Alex
