Deleting Records In Associated Foeign Key Table

Dec 2, 2007

Hi, i need the suggestion here in very familiar db situation ..i have a main table and a primary key of that table is used in many other table as foreign key.If i am deleting a record in a main table,how do i make sure that all the corresponding record in the associated tables,where that foreign key is used, gets deleted too?What are my options?Thanks

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Deleting Old Records Is Blocking Updating Latest Records On Highly Transactional Table

Mar 18, 2014

I have a situation where deleting old records is blocking updating latest records on highly transactional table and getting timeout errors from application.

In details, I have one table called Tran_table1 in OLTP database. This Tran_table1 is highly transactional table, it will receive data for insert/update continuously

While archiving 2 years old records from Tran_table1 into Tran_table1_archive in batches(using DELETE OUTPUT INTO clause), if there is any UPDATEs on Tran_table1,these updates are getting blocked and result is timeout errors in application.

Is there any SQL Server hints to avoid blocking ..

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Jul 6, 2006

I loaded one table via SSIS and found that it contained many duplicate records (from the input source). I can create a SQL task to delete them, but I wonder if SSIS offers and task "out of the box" to delete dups?



TAI,



barkingdog

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Aug 24, 2015

I'm trying to delete some records from some tables in a SQL Server 2008 R2 database. There's a foreign key relationship between the two tables. To make things easier here's the definition of both tables:

-- Parent table
CREATE TABLE [dbo].[PharmInvInItemPackages](
[InventoryInDetailID] [int] IDENTITY(1,1) NOT NULL,
[InventoryInID] [int] NOT NULL,
[ItemPackageID] [int] NOT NULL,

[code]....

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Sep 24, 2015

I have one table having three columns.This table contains lot of repeated records. I want to delete this records .

In this below example i want to delete all the records which columns id and no columns contains same values.

id no sequence
------------------------------------
35 35432 1
35 35432 2
35 35432 3
36 35432 1
35 45623 1

First three records the columns id and no contains same value. I want to delete this three records.

But in last record for id =35 and no column =45623.it is not repeated so it should not be deleted.

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Jan 27, 2006

Is there a way to delete records from table passing parameter as tablename? I won't to delete all records from a table dependent on table selected. i'm trying to do this with stored procedure...Table to delete depends on the checkbox selected.

Current code(works)
Public Function DelAll()
MZKDB = MZKHRFin
If sloption = "L" Then
sqlConn.ConnectionString = "Server=" & MZKSrv & ";Initial Catalog=" & MZKDB & ";Integrated Security=SSPI;"
ElseIf sloption = "S" Then
sqlConn.ConnectionString = "Server=" & MZKSrv & ";User id=sa;Password=" & MZKPswd & "; Initial Catalog=" & MZKDB & ";"
End If
sqlConn.Open()
sqlTrans = sqlConn.BeginTransaction()
sqlCmd.Connection = sqlConn
sqlCmd.Transaction = sqlTrans
Try
sqlCmd.CommandText = sqlStr
sqlCmd.ExecuteNonQuery()
sqlTrans.Commit()
frm2.txtResult.Text = frm2.txtResult.Text & " " & TableName & " Prior records have been deleted from the database." & vbCrLf
SetCursor()
Catch e As Exception
Try
sqlTrans.Rollback()
Catch ex As SqlException
If Not sqlTrans.Connection Is Nothing Then
frm2.txtResult.Text = frm2.txtResult.Text & " " & TableName & " An exception of type " & ex.GetType().ToString() & " was encountered while attempting to roll back the transaction." & vbCrLf
SetCursor()
End If
End Try
frm2.txtResult.Text = frm2.txtResult.Text & " " & TableName & " Records were NOT deleted from the database." & vbCrLf
SetCursor()
Finally
sqlConn.Close()
End Try
ResetID()
End Function
If cbGenFY.Checked Then
sqlStr = "DELETE FROM FIN_FiscalYear"
TableName = "dbo.FIN_FiscalYear"
DelAll()
ClearCounts()
timeStepStart = Date.Now
GenFY()
timeStepStop = Date.Now

DispOneCounts()
End If
If cbGenFund.Checked Then
sqlStr = "DELETE FROM FIN_Fund"
TableName = "dbo.FIN_Fund"
DelAll()
ClearCounts()
timeStepStart = Date.Now
GenFund()
timeStepStop = Date.Now
DispOneCounts()
End If
If cbGenFunc.Checked Then
sqlStr = "DELETE FROM FIN_Function"
TableName = "dbo.FIN_Function"
DelAll()
ClearCounts()
timeStepStart = Date.Now
GenFunc()
timeStepStop = Date.Now
DispOneCounts()

End If
If cbGenObject.Checked Then
sqlStr = "DELETE FROM FIN_Object"
TableName = "dbo.FIN_Object"
DelAll()
ClearCounts()
timeStepStart = Date.Now
GenObject()
timeStepStop = Date.Now
DispOneCounts()
End If
If cbGenCenter.Checked Then
sqlStr = "DELETE FROM FIN_Center"
TableName = "dbo.FIN_Center"
DelAll()
ClearCounts()
timeStepStart = Date.Now
GenCenter()
timeStepStop = Date.Now
DispOneCounts()
End If
If cbGenProject.Checked Then
sqlStr = "DELETE FROM FIN_CodeBook"
TableName = "dbo.FIN_CodeBook"
DelAll()
sqlStr = "DELETE FROM FIN_BudgetAccnt"
TableName = "dbo.FIN_BudgetAccnt"
DelAll()
sqlStr = "DELETE FROM FIN_Budget"
TableName = "dbo.FIN_Budget"
DelAll()
sqlStr = "DELETE FROM FIN_Project"
TableName = "dbo.FIN_Project"
DelAll()
ClearCounts()
timeStepStart = Date.Now
GenProject()
timeStepStop = Date.Now
TableName = "dbo.FIN_Project"
DispOneCounts()
End If
If cbGenProgram.Checked Then
sqlStr = "DELETE FROM FIN_Program"
TableName = "dbo.FIN_Program"
DelAll()
ClearCounts()
timeStepStart = Date.Now
GenProgram()
timeStepStop = Date.Now
DispOneCounts()
End If
If cbGenGL.Checked Then
sqlStr = "DELETE FROM FIN_gl"
TableName = "FIN_gl"
DelAll()
ClearCounts()
timeStepStart = Date.Now
GenGL()
timeStepStop = Date.Now
DispOneCounts()
End If
If cbGenRevenue.Checked Then
sqlStr = "DELETE FROM FIN_Revenue"
TableName = "FIN_Revenue"
DelAll()
ClearCounts()
timeStepStart = Date.Now
GenRevenue()
timeStepStop = Date.Now
DispOneCounts()
End If
If cbGenBank.Checked Then
sqlStr = "DELETE FROM FIN_VendorBankAccnt"
TableName = "dbo.FIN_VendorBankAccnt"
DelAll()
sqlStr = "DELETE FROM FIN_VendorBank"
TableName = "dbo.FIN_VendorBank"
DelAll()
sqlStr = "DELETE FROM FIN_bankAdd"
TableName = "dbo.FIN_bankAdd"
DelAll()
sqlStr = "DELETE FROM FIN_bankTERMS"
TableName = "dbo.FIN_bankTerms"
DelAll()
sqlStr = "DELETE FROM FIN_bank"
TableName = "dbo.FIN_bank"
DelAll()
ClearCounts()
timeStepStart = Date.Now
GenBank()
timeStepStop = Date.Now
TableName2 = "dbo.FIN_bankTERMS"
TableName3 = "dbo.FIN_BankAdd"
TableName4 = "dbo.FIN_VendorBank"
TableName5 = "dbo.FIN_VendorBankAccnt"
DispTwoCounts()
End If
If cbFinAP.Checked Then
sqlStr = "DELETE FROM FIN_Period"
TableName = "FIN_Period"
DelAll()
ClearCounts()
timeStepStart = Date.Now
GenPeriod()
timeStepStop = Date.Now
DispOneCounts()
End If

If cbFinVM.Checked Then
sqlStr = "DELETE FROM FIN_vendorClass"
TableName = "FIN_vendorClass"
DelAll()
sqlStr = "DELETE FROM FIN_vendorAdd"
TableName = "FIN_vendorAdd"
DelAll()
sqlStr = "DELETE FROM FIN_vendor"
TableName = "FIN_vendor"
DelAll()
sqlStr = "DELETE FROM FIN_AddressType"
TableName = "FIN_AddressType"
DelAll()
sqlStr = "DELETE FROM FIN_VendorStatus"
TableName = "FIN_VendorStatus"
DelAll()
sqlStr = "DELETE FROM States"
TableName = "States"
DelAll()
sqlStr = "DELETE FROM Country"
TableName = "Country"
sqlStr = "DELETE FROM FIN_IndustrialCodes"
TableName = "FIN_IndustrialCodes"
DelAll()
ClearCounts()
timeStepStart = Date.Now
GenIndCodes()
timeStepStop = Date.Now
DispOneCounts()
DelAll()
ClearCounts()
timeStepStart = Date.Now
FinVendStat()
timeStepStop = Date.Now
TableName = "FIN_VendorStatus"
DispOneCounts()
ClearCounts()
timeStepStart = Date.Now
FinAddrType()
timeStepStop = Date.Now
TableName = "FIN_AddressType"
DispOneCounts()
ClearCounts()
timeStepStart = Date.Now
GenCountry()
timeStepStop = Date.Now
TableName = "Country"
DispOneCounts()
ClearCounts()
timeStepStart = Date.Now
GenState()
timeStepStop = Date.Now
TableName = "States"
DispOneCounts()
ClearCounts()
timeStepStart = Date.Now
FinVM()
timeStepStop = Date.Now
TableName = "FIN_Vendor"
TableName2 = "FIN_VendorAdd"
DispTwoCounts()
End If
If cbFinbudget.Checked Then
sqlStr = "DELETE FROM FIN_BudgetAccnt"
TableName = "FIN_BudgetAccnt"
DelAll()
sqlStr = "DELETE FROM FIN_Budget"
TableName = "FIN_Budget"
DelAll()
sqlStr = "DELETE FROM FIN_CodeBook"
TableName = "FIN_CodeBook"
DelAll()
ClearCounts()
TableName = "FIN_Budget"
timeStepStart = Date.Now
FinBudget()
timeStepStop = Date.Now
DispOneCounts()
ClearCounts()
TableName = "FIN_Codebook"
TableName2 = "FIN_budgetAccnt"
timeStepStart = Date.Now
FinCodeBook()
timeStepStop = Date.Now
DispTwoCounts()
ClearCounts()
End If

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DELETING RECORDS FROM TABLE WITH NESTED WHERE CLAU

Sep 11, 2007

Hi,

I have a query that is executing properly but i want to delete the results of the query. I am trying to do it but i am messing up somewhere in the syntax

Can anybody help me out with this problem?
Below is the query
DELETE FROM DPT_NEW_BINS WHERE(
Select BIN,LEFT(ACCT_NUM_MIN,16), LEFT(ACCT_NUM_MAX,16), ISO_CTRY_CD, REGN_CD ,PROD_TYPE_CD FROM DPT_NEW_BINS o
WHERE EXISTS (SELECT BIN,LEFT(ACCT_NUM_MIN,16), LEFT(ACCT_NUM_MAX,16), ISO_CTRY_CD, REGN_CD ,PROD_TYPE_CD FROM DPT_temp_NEW_BINS i
WHERE o.ACCT_NUM_MIN = i.ACCT_NUM_MIN AND o.ACCT_NUM_MAX = i.ACCT_NUM_MAX))

CAN SOMEBODY POINT OUT MY MISTAKE?

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May 24, 2007

No transaction log involved, only the table itself.



Use sp_spaceused "table_name" to check the space used.



It seems the table size actually increased from the beginning to the middle of deletion, at the end of deletion, its size decreased.



Recovery mode set to be simple, autoshrink turned on.



The tables tested are about 50MB ~ several GB in size, all have the same behavior. The size increased about 5%~10%.



Since the deletion is called from another software, I want to know if it is possible for SQL Server to have this behavior or it is absolutely the 3rd party software's issue



Thanks!

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Aug 5, 2015

I have many large tables with millions of records in a SQL Server database. They all use an Identity column which is the clustered index. We haven't been deleting any records until recently because disk space is now becoming a problem.

Assuming I delete a lot of old records, I'm thinking that the freed up space in the data pages won't be reused. New records will be added at the end of the table because of the Identity column being the clustered index. So the table will keep getting bigger even though there is lots of free space.

Assuming I'm right, then how do I recapture this unused space? Is an alter table rebuild the best way? Or rebuilding the clustered index?

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Jun 12, 2015

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Aug 9, 2007

Hi
i have to delete the master table data without deleting the child table records,is there any solution for this,  parent table has relation with the child table.
regards
vinod.t.v

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Jul 12, 2004

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Feb 25, 2005

I have a table with a load of orphaned records (I know... poor design)
I'm trying to get rid of them, but I'm having a brain cramp.

I need to delete all the records from the table "Floor_Stock" that
would be returned by this select statement:


SELECT FLOOR_STOCK.PRODUCT, FLOOR_STOCK.SITE
FROM PRODUCT_MASTER INNER JOIN
FLOOR_STOCK ON PRODUCT_MASTER.PRODUCT =
FLOOR_STOCK.PRODUCT LEFT OUTER JOIN
BOD_HEADER ON FLOOR_STOCK.PRODUCT =
BOD_HEADER.PRODUCT AND FLOOR_STOCK.SITE =
BOD_HEADER.SITE
WHERE (BOD_HEADER.BOD_INDEX IS NULL) AND
(PRODUCT_MASTER.PROD_TYPE IN ('f', 'n', 'k', 'b', 'l', 's'))


I was thinking along the lines of:


DELETE FROM FLOOR_STOCK INNER JOIN
(SELECT FLOOR_STOCK. PRODUCT, FLOOR_STOCK.SITE
FROM PRODUCT_MASTER INNER JOIN
FLOOR_STOCK ON PRODUCT_MASTER. PRODUCT =
FLOOR_STOCK.PRODUCT
LEFT OUTER JOIN BOD_HEADER ON FLOOR_STOCK. PRODUCT =
BOD_HEADER. PRODUCT AND FLOOR_STOCK.SITE = BOD_HEADER.SITE
WHERE (BOD_HEADER.BOD_INDEX IS NULL) AND
(PRODUCT_MASTER.PROD_TYPE IN ('f', 'n', 'k', 'b', 'l', 's'))) F ON
FLOOR_STOCK. PRODUCT = F. PRODUCT
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Mar 3, 2004

How do I delete one record from one table and cascade down all related tables?


Mike B

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Aug 14, 2006

Hey all,

Here is the scenario. I'm working with two tables:

Contact1
Conthist

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The link between the two tables is a column called accountno.

I'm trying to delete any records in conthist that have an accountno that does not exist in contact1. The queries that I've tried keep returning conthist records that do actually have a matching accountno.

Any help would be appreciated.

Thanks,

Tony

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Apr 12, 2007

Whenever I try to delete records from a table joined to another table, like so:



DELETE [tblTransaction Detail Local] FROM [tblTransaction Detail Local], [tblTransaction Header] WHERE ([tblTransaction Detail Local].[Transaction ID] = [tblTransaction Header].[Transaction ID]) AND ([tblTransaction Header].[Computer ID] = 3)



I get the error:

Major Error 0x80040E14, Minor Error 25501

> DELETE [tblTransaction Detail Local] FROM [tblTransaction Detail Local], [tblTransaction Header] WHERE ([tblTransaction Detail Local].[Transaction ID] = [tblTransaction Header].[Transaction ID]) AND ([tblTransaction Header].[Computer ID] = 3)

There was an error parsing the query. [ Token line number = 1,Token line offset = 38,Token in error = FROM ]



This is an SQL CE database, and SQL Server Management Studio. Any ideas?

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May 18, 2006

I have a couple SQL tables that have been appended to daily over the last two years. There is now about 50,000,000 records in the table. Does anyone know the fastest way to delete records before a certain date to shorten these tables? Delete queries and everything else I've tried is taking way too long.

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May 21, 2004

Apparently, deleting 7,000,000 records from a table of about 20,000,000 is not advisable. We were able to take orders at 8:00AM, but not at 7:59.

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DTS the ones to keep to another table, drop the old and rename the new table?
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DTS to text, truncate and import back?
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Never worked with such a large table and need a little experienced guidance.

Thanks for the help

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Jan 5, 2002

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Here is my table.
Colleges
-------------------
schoolID - smallint NOT NULL,
schoolName - varchar(60) NULL

Can someone help me out with the sql statement???
I'm running SQL Server 6.5.

- ted

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Aug 27, 2004

Hi All,
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It is something like this,

MyCol
7
7
7
7
7
7
7
7
7
7

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What should i do if i want only 4 records insted 10 records in my table?
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Plz help me.


Regards,
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For example.

CREATE TABLE [Employee] (Id int, Name varchar(50))
CREATE TABLE [Company] (Id int, Name varchar(50))
CREATE TABLE [EmployeeCompany] (CompanyId int, EmployeeId int)

CREATE VIEW [dvEmployee]
AS
SELECT *
FROM [Employee] INNER JOIN [EmployeeCompany]
ON [Employee].[Id] = [EmployeeCompany].[EmployeeId]

CREATE TRIGGER [dvEmployeeUpdate]
ON [dbo].[dvEmployee]
INSTEAD OF UPDATE
AS
BEGIN
UPDATE EmployeeCompany
SET Status = INSERTED.Status
FROM EmployeeCompany, INSERTED
WHERE EmployeeCompany.CompanyId = INSERTED.CompanyId
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END

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Reason I'm asking is we have an already designed database that is littered with columns named the same as sql keywords (almost every table has a [Status] column, and there are many [Password] columns). When using a dataview on these tables, triggers exist that aren't putting the [] around these column names (the same as my dvEmployeeUpdate trigger above), and somehow we are seemingly randomly losing records. It is very rare, and they are getting completely deleted, and it seems to be the tables that contain the keyword columns and are used in dataviews with instead of triggers that don't put [] around the column names. Nowhere in any trigger or stored procedure is there a DELETE FROM on these tables, and the software running on the database uses only the data views, and doesn't directly access the underlying tables.

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Jan 15, 2006

help me out on this one.
i have 2 text boxes in my page.
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main table contains
srNo. UswerID
1 abcd
2 trtr
3 tret
4 yghg
5 jjhj

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table1
sr.no UserID
2 trtr

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gaurav writes "respected sir
here i have a question
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thanks"

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May 8, 2005

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Dim dbCmd As OleDb.OleDbCommand = New OleDb.OleDbCommand()
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dbCmd.Connection.Open()
Dim reader as OleDb.OleDbDataReader = dbCmd.ExecuteReader(CommandBehavior.CloseConnection)
While reader.Read()
    If reader("SomeColumn") = SomeCalculatedValue Then
        Dim dbCmd2 As OleDb.OleDbCommand = New OleDb.OleDbCommand()
        dbCmd2.Connection = New OleDb.OleDbConnection(UserDbConnString)
        dbCmd2.CommandText = "DELETE FROM [User] WHERE UserID = " + reader("UserID")
        dbCmd2.Connection.Open()
        dbCmd2.ExecuteNonQuery()
        dbCmd2.Connection.Close()
    End If
End While
reader.Close()

This code worked well with an MS Access database, but when I changed to
SQL Server, I get a database timeout error when attempting to do the
DELETE. I suspect the reason is that the connection the reader has open
has the record locked so it cannot be deleted.

The SQL connection string I am using is something like this:

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The connection string I used for MS Access included the property
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[CODCTB] [int] NOT NULL,
[CODCAE] [int] NULL,
[CODSECTOR] [int] NOT NULL,

[Code] ....

I want to delete every record that has more than one entry (codctb; codcae)

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[Code] ....

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Aug 9, 2006

Rajarajan writes "Kindly don't ignore this as regular case.
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eg.

1. 232
2. 232
3. 345
4. 567
5. 232

Here only the first record has to be delete. Kindly help me out.

Thank you.

Regards,
R.Rajarajan"

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Return False
End Try
Return True
End Function
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