Foreign Key -- Urgent, Please

Sep 5, 2001

Hi All,

For some reason I have to drop a foreign key in the table and recreate them again. for example, I droped titleauthor table's foreign key in the PUBS database, then I want to recreate them again, but I got error massage. I used below script:

alter table titleauthor
drop CONSTRAINT FK__titleauth__au_id__164452B1
====
alter table titleauthor
add constraint FK__titleauth__au_id__164452B1 foreign key (au_id) references authors(au_id)

**************error message*************
Server: Msg 547, Level 16, State 1, Line 1
ALTER TABLE statement conflicted with COLUMN FOREIGN KEY constraint 'FK__titleauth__au_id__164452B1'. The conflict occurred in database 'pubs', table 'authors', column 'au_id'.
******************************************
Anybody can please tell me where is wrong?

Thank you so much!!!

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Foreign Key -- Urgent

Sep 5, 2001

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Also,

Is it possible to add a foreign key constraint on the table once it has a data?

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Mar 11, 1999

Hi,

I have two tables.
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Msg 547, Level 16, State 2
DELETE statement conflicted with COLUMN REFERENCE constraint 'FK__Newdev__SERVId__4939E6D2'. The conflict occurred in database 'test', table 'New', column 'SERVId'
Command has been aborted.

The same problem occurs even if the second table i.e. new is declared as follows, i.e created with only one primary key:
CREATE TABLE New(
SERVId varchar (10) NOT NULL,
NDId varchar (10) NOT NULL,
NDName varchar (30) NOT NULL,
NDDesc text NULL,
PRIMARY KEY(NDId)
FOREIGN KEY(SERVId)
REFERENCES Service(SERVId)
)

what might be the problem? But the same relation works on MS Access.
Is there anyother way of declaring this kind of relationship i.e. primary and foreign key?Can anyone pl. help me in solving this problem of foreign key relation.

thanks in advance
-chaitra

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A connection could not be estabished to server--Timeout expired
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++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++

We use windows NT authentication. We did not do any change on NT. The SQL Server daily schedule job usally stoped at 10:00AM, but today from the Window NT Task Manager, we can see that the SQL Server is still running untill now.

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I do have a valid email account
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Access
------
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http://img.photobucket.com/albums/v294/Jertsy/Agh.jpg

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I'm using stored procedures to update my tables. If I disable the foreign key constraint all works perfectly. Otherwise I get this error:INSERT statement conflicted with TABLE FOREIGN KEY constraint 'FK_wansub_invoice'. The conflict occurred in database 'test1', table 'invoice'. The statement has been terminated. I don't understand why I'm getting the error, because when I disable the constraint even the foreign key fields are updated properly and there is no apparent conflict with the linked table. I've included my c# code and the stored procedure below.FYI the foreign keys in question are InvoiceDate, AccountNum, CarrierId, and Cycle. These are the primary keys in the "invoice" table, and foreign keys in the "wansub" table. It is vital that all records in the wansub table are matched with a record in the invoice table, so I have to have this constraint in place. C# code to create parameters and call the sp:
public int updateWanTable(WanSubaccount sub, Invoice invoice)
{
SqlCommand cmdUpdateWan;
int returnvalue = 0;

cmdUpdateWan = new SqlCommand("usp_updatewan", conn);
cmdUpdateWan.CommandType = CommandType.StoredProcedure;

SqlParameter invoicedate = cmdUpdateWan.Parameters.Add("@InvoiceDate", SqlDbType.SmallDateTime);
invoicedate.Value = DateTime.Parse(invoice.InvoiceDate.Trim());

SqlParameter subaccountnumber = cmdUpdateWan.Parameters.Add("@SubaccountNumber", SqlDbType.VarChar, 50);
subaccountnumber.Value = sub.SubaccountNumber.Trim();

SqlParameter addressa = cmdUpdateWan.Parameters.Add("@AddressA", SqlDbType.VarChar, 50 );
addressa.Value = sub.Address.Trim();

SqlParameter citya = cmdUpdateWan.Parameters.Add("@CityA", SqlDbType.VarChar, 50 );
citya.Value = sub.City.Trim();

SqlParameter statea = cmdUpdateWan.Parameters.Add("@StateA", SqlDbType.VarChar, 50 );
statea.Value = sub.State.Trim();

SqlParameter zipa = cmdUpdateWan.Parameters.Add("@ZipA", SqlDbType.NChar, 10 );
zipa.Value = sub.Zip.Trim();

SqlParameter countrya = cmdUpdateWan.Parameters.Add("@CountryA", SqlDbType.VarChar, 50 );
countrya.Value = sub.Country.Trim();

SqlParameter addressb = cmdUpdateWan.Parameters.Add("@AddressB", SqlDbType.VarChar, 50 );
addressb.Value = sub.AddressB.Trim();

SqlParameter cityb = cmdUpdateWan.Parameters.Add("@CityB", SqlDbType.VarChar, 50 );
cityb.Value = sub.CityB.Trim();

SqlParameter stateb = cmdUpdateWan.Parameters.Add("@StateB", SqlDbType.VarChar, 50 );
stateb.Value = sub.StateB.Trim();

SqlParameter zipb = cmdUpdateWan.Parameters.Add("@ZipB", SqlDbType.NChar, 10 );
zipb.Value = sub.ZipB.Trim();

SqlParameter countryb = cmdUpdateWan.Parameters.Add("@CountryB", SqlDbType.VarChar, 50 );
countryb.Value = sub.CountryB.Trim();

SqlParameter speed = cmdUpdateWan.Parameters.Add("@Speed", SqlDbType.VarChar, 50 );
speed.Value = sub.Speed.Trim();

SqlParameter type = cmdUpdateWan.Parameters.Add("@Type", SqlDbType.VarChar, 50 );
type.Value = sub.Type.Trim();

SqlParameter monthlycharge = cmdUpdateWan.Parameters.Add("@MonthlyCharge", SqlDbType.Money );
monthlycharge.Value = sub.MonthlyServiceFee;

SqlParameter discounts = cmdUpdateWan.Parameters.Add("@Discounts", SqlDbType.Money );
discounts.Value = sub.Discounts;

SqlParameter other = cmdUpdateWan.Parameters.Add("@Other", SqlDbType.Money );
other.Value = sub.Other;

SqlParameter ucc = cmdUpdateWan.Parameters.Add("@UCC", SqlDbType.Money );
ucc.Value = sub.Ucc;

SqlParameter fedtax = cmdUpdateWan.Parameters.Add("@FedTax", SqlDbType.Money );
fedtax.Value = sub.FedTax;

SqlParameter statetax = cmdUpdateWan.Parameters.Add("@StateTax", SqlDbType.Money );
statetax.Value = sub.StateTax;

SqlParameter othertax = cmdUpdateWan.Parameters.Add("@OtherTax", SqlDbType.Money );
othertax.Value = sub.OtherTax;

SqlParameter accountnum = cmdUpdateWan.Parameters.Add("@AccountNum", SqlDbType.VarChar, 50 );
accountnum.Value = invoice.AccountNumber.Trim();
SqlParameter carrierid = cmdUpdateWan.Parameters.Add("@CarrierId", SqlDbType.Int );
carrierid.Value = invoice.CarrierId;

SqlParameter isthirdparty = cmdUpdateWan.Parameters.Add("@IsThirdParty", SqlDbType.Bit );
isthirdparty.Value = sub.IsThirdParty;

SqlParameter thirdparty = cmdUpdateWan.Parameters.Add("@ThirdPartyBillingCompany", SqlDbType.VarChar, 50 );
thirdparty.Value = sub.ThirdPartyBillingCompany.Trim();

SqlParameter var = cmdUpdateWan.Parameters.Add("@Comments", SqlDbType.VarChar, 255 );
var.Value = sub.Comments.Trim();

SqlParameter notes = cmdUpdateWan.Parameters.Add("@Notes", SqlDbType.VarChar, 255 );
notes.Value = sub.Notes.Trim();

SqlParameter cycle = cmdUpdateWan.Parameters.Add("@Cycle", SqlDbType.Int );
cycle.Value = invoice.Cycle;

// try
// {
conn.Open();
// }
// catch{
//
// }
// try{
returnvalue = cmdUpdateWan.ExecuteNonQuery();
// }
// catch(SqlException e){
// returnvalue = 2;
// }
// finally{
conn.Close();
fill(this);
// }

return returnvalue;
}The SP:CREATE PROCEDURE usp_updatewan( @InvoiceDate smalldatetime, @SubaccountNumber varchar(50), @AddressA varchar(50), @CityA varchar(50), @StateA varchar(50), @ZipA nchar(10), @CountryA varchar(50), @AddressB varchar(50), @CityB varchar(50), @StateB varchar(50), @ZipB nchar(10), @CountryB varchar(50), @Speed varchar(50), @Type varchar(50), @MonthlyCharge money, @Discounts money, @Other money, @UCC money, @FedTax money, @StateTax money, @OtherTax money, @AccountNum varchar(50), @CarrierId int, @IsThirdParty bit, @ThirdPartyBillingCompany varchar(50), @Comments varchar(255), @Notes varchar(255), @Cycle int)
AS
if exists ( select * from wansub where InvoiceDate = @InvoiceDate and SubaccountNumber = @SubaccountNumber and AccountNum = @AccountNum and CarrierId = @CarrierId and Cycle = @Cycle ) Begin --if the record exists update wansub set AddressA = @AddressA, CityA = @CityA, StateA = @StateA, ZipA = @ZipA, CountryA = @CountryA, AddressB = @AddressB, CityB = @CityB, StateB = @StateB, ZipB = @ZipB, CountryB = @CountryB, Speed = @Speed, Type = @Type, MonthlyCharge = @MonthlyCharge, Discounts = @Discounts, Other = @Other, UCC = @UCC, FedTax = @FedTax, StateTax = @StateTax, OtherTax = @OtherTax, IsThirdParty = @IsThirdParty, ThirdPartyBillingCompany = @ThirdPartyBillingCompany, Comments = @Comments, Notes = @Notes EndElse Begin
insert into wansub values (@InvoiceDate, @SubaccountNumber, @AddressA, @CityA, @StateA, @ZipA, @CountryA, @AddressB, @CityB, @StateB, @ZipB, @CountryB, @Speed, @Type, @MonthlyCharge, @Discounts, @Other, @UCC, @FedTax, @StateTax, @OtherTax, @AccountNum, @CarrierId, @IsThirdParty, @ThirdPartyBillingCompany, @Comments, @Notes, @Cycle)
EndGOAny help is greatly appreciated! Especially since I have other tables with this very problem as well . . .

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