Mind Boggling / How Can You Query Self Referencing Tables? (self Referencing Foreign Keys)

Jun 15, 2006

For example, the table below, has a foreign key (ManagerId) that points to EmployeeId (primary key) of the same table.

-------Employees table--------

EmployeeID  . . . . . . . .  .  .  int

Name  .  .  .  .  .  .  .  .  .  .  .  nvarchar(50)

ManagerID  . . . . . . . .  .  .  .  int

 

If someone gave you an ID of a manager, and asked you to get him all employee names who directly or indirectly report to this manager.

How can that be achieved?

View 6 Replies


ADVERTISEMENT

Foreign Key NOT Referencing PK

Sep 18, 2006

This book 'MS SQL Server 2000 Bible' says the following:

'The foreign key can reference primary keys, unique constraints, or unique indexes of any table'

I've never heard of this before, I thought that the FK always established referential integrity by referencing the PK in the parent table. Does anyone have a further explanation of this?

thx,

Kat

View 5 Replies View Related

Referencing Composite Primary KEYS

Feb 27, 2006

Hi,
i want to make a reference from a table on itself.
The table has a composite Primary Key. But I just want to refernce the TEstCaseID.
So whats wrong? Can anyone help me?


CREATE TABLE dbo.TestCase (
Project_projectID VARCHAR(20) NOT NULL references Project,
testCaseID VARCHAR(50) NOT NULL,
PRIMARY KEY(Project_projectID, testCaseID),
FatherID VARCHAR(50) references TestCase(testCaseID)

)


THanx Crean

View 2 Replies View Related

UniqueIdentifier Self Referencing Foreign Key

May 16, 2008

I have a UniqueIdentifier as a self referencing foreign key. The pk gets set by default using the newid(). I need the foreign key to default to that same value. how can i do that? @@identity doesnt work, $rowguid doesnt work, column name doesnt work. Any ideas?

View 9 Replies View Related

Referencing Column List For Foreign Key No Match

Oct 26, 2013

I'm encountering this very weird problem, so I create a staff table:

CREATE TABLE Staff (
staffNo numeric(10),
venueNo numeric(10),
name nvarchar(20),
DOB datetime,
position nvarchar(20),
salary numeric(8,2)
CONSTRAINT staff_PK PRIMARY KEY(staffNo, venueNo),
CONSTRAINT venue_FK FOREIGN KEY(venueNo) REFERENCES Venue
);

and then when I create a professional therapist table

CREATE TABLE Professional_Therapist (
staffNo numeric(10),
specialization nvarchar(20),
bonus numeric(8,2),
CONSTRAINT professional_PK PRIMARY KEY(staffNo),
CONSTRAINT staff_FK FOREIGN KEY(staffNo) REFERENCES Staff
);

It says : The number of columns in the referencing column list for foreign key 'staff_fk' does not match those of the primary key in the referenced table 'Staff'.

View 3 Replies View Related

DB Design :: Foreign Key Referencing Non Unique Field In Server

Oct 12, 2012

I ran into an interesting situation.  I'm working on contract and was looking at creating an ERD for an existing database when I ran into a problem.  I found FK's that are referencing columns that do not have a unique constraint or a unique index. 

I don't know the history of the database but was there a time in SQL Server history where this would have been possible?  I scripted out the tables and created it in a test database.  When I run the script to create the FK I get the following message. 

I double checked the original tables and this FK does exist in table1 and there is no unique anything in the referenced table, table2.  Currently the database is running on SQL Server 2008 Ent.

ALTER TABLE [dbo].[table1] WITH CHECK ADD CONSTRAINT [FK_table1] FOREIGN KEY([Col1])
REFERENCES [dbo].[table2] ([col2])

There are no primary or candidate keys in the referenced table 'dbo.table2' that match the referencing column list in the foreign key 'FK_table1'.

View 4 Replies View Related

Mind Boggling Order By

Nov 21, 2006

Hello everyone, this is my first time to these boards. I've been running all around for the last few days trying to solve a problem. So far, on 3 forums, we haven't been able to find a solution.

I am using MS SQL 2005 Workgroup. I have catalog of events on my site. Each event can have a little as 0 up to an unlimited amount of Photos attached to them(in a seperate table.) Here's the basic breakdown.

catalog
-----------
id - PK
act_name
(price and other such info)

Photos
-----------
id - PK
path_to_photo
event_id - FK(catalog.id)

What I'm trying to do is select all the events in the catalog, and order them by the number of photos they have in the photos table. The idea is to get the events that have photos at the top of the list.

here is the query that I'm using right now.


Code:

SELECTCOUNT(photos.id) AS PhotoCount, catalog.id AS item_id, catalog.company, catalog.act_name,
catalog.location, catalog.price_adult,
catalog.price_child, catalog.short_description, catalog.photo, catalog.children_allowed,
catalog.long_description, catalog.online,
catalog.act_type, event_types.act_type AS evt_type,
event_types.id AS event_id, catalog.rank, catalog.length, catalog.bullets,
photos.id
FROM catalog, event_types, photos
WHERE catalog.act_type = event_types.id
AND photos.event_id = catalog.id
GROUP BY COUNT(photos.id), catalog.id, catalog.company, catalog.act_name
ORDER BY photos.id, catalog.id, catalog.company, catalog.act_name



Which returns the following error.
Column 'catalog.location' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.

No matter what I do, I always seem to get an error. I've removed the Count in the select list, and that tells me that I cannot call Aggregate functions in the Group By list.

Anyone got an idea what I'm doing wrong?

Thanks in advance,
Morgan

View 3 Replies View Related

Mind Boggling! Database Design Help

Dec 10, 2007

I'm trying to create a "Self-Referential, Many-to-Many" relationship under the Database Diagrams section in Sql Server 2005 express and I'm having a heck of a time figuring out where to click and edit to create what I want.

The url below links to the pictorial represenation of what i'm trying to create. Any help is greatly appreciated. Thanks!
http://www.communitymx.com/content/source/A1A63/diag.gif

View 7 Replies View Related

Referencing And Renaming Tables..

Mar 2, 2007

help how to reference n rename table..

is it possible by code?

View 7 Replies View Related

Problem With Delete Cascade For Self-referencing Tables

Jul 20, 2001

Hi,
I have a self-referencing table, something like Emlplyee-Manager. I want to implement the cascading delete in this table. So when I delete a manager than all the employees should be deleted at ANY level below the manager.
I do not have DRI for the Foreignkey (manager)!!!
My problem is that the trigger fires only one time (for the "sons") and not for the "grandsons" and below.
I've used the following flags:
- nested triggers (in "SQL Server Properies", "Server settings" tabsheet)
- recursive triggers (database "Properties", "Options" tabsheet)
I've combined this 2 flags:
1. nested flag reset and recursive flag reset
2. nested flag reset and recursive flag set or
3. nested flag set and recursive flag reset
4. nested flag set and recursive flag set
The results are the following:
-for case 1, 2 and 3 the same results: the trigger fires just for the first level (the sons are deleted but the grandsons remains there orphan)
-for case 4 I have the following error message:
"Maximum stored procedure nesting level exceeded (limit 32)"
so I can't delete anything at all.

Any idea why the trigger doesn't fire for "grandsons" and below?
Could be that this above mentioned flags doesn't works for self-referencing tables ?

Thanks in advance

View 3 Replies View Related

Stored Procedure Referencing Moved Tables

Mar 12, 2001

Hi everyone

I am totally confused, please help me. I am new to this

I am trying to split one DB (A) into two databases original (A) and new-Blank(B) by moving some tables from DB (A) to the new DB (B) however some of the tables has FK and Stored procedures referencing other tables that need to stay in DB (B), The questions are

1. after scritping these tables while they are in DB (A), and runing the script in DB (B) to re-create them, do I delete these table from DB (A), and the FK that references them.

2. What shall I do with the stored procedures. Turn them into trigers or else if turn them into trigers, in which DB should the triggers run (DB A of DB B),if these are becoming triggers do I delete the stored procedures from DB (A)

Any reply is appreciated

View 2 Replies View Related

Referencing Tables In Nested Select Statements

Mar 3, 2008

I'm just wodnering if you have two select statements, one nested inside another, can you reference tables from the outer loop?

for example, say I would like to find all employees who have at least two clients and employees and clients have a one to many relationship.

select *
from Employee e
where
(
select count(*)
from Clients c
where c.EmployeeId = e.EmployeeId
) >= 2

This obviously doesn't work - but how would i go about doing something like this?

View 10 Replies View Related

View Referencing Multiple Tables Not Updatable ?

Jun 7, 2006

Hi

This is for Sql Server 2000.

I get the following error :

View or function 'PS_EMPLOYMENT' is not updatable because the modification affects multiple base tables.

Sql is as follows:

INSERT INTO PS_EMPLOYMENT(EMPLID,EMPL_RCD,PER_ORG,BENEFIT_RCD_NBR,HOME_HOST_CLASS,OWN_5PERCENT_CO,
SECURITY_CLEARANCE,NEE_PROVIDER_ID,POSITION_PHONE,BUSINESS_TITLE,REPORTS_TO,
SUPERVISOR_ID)
VALUES('000004', 0, ' ', 0, 'M', 'N', ' ', ' ', ' ', ' ', ' ', ' ')
----------------------------------------------------------------------------------------------------------------------------------------------------------------

Searching the KB i only found links to SP1 and SP3, the server is already at SP3.

BOL says the following:

SQL Server 6.x :

Updatable views were restricted to modifications that affected only one table

SQL Server 2000:

Updatable views can modify more than one table involved in the view. The DELETE, INSERT, and UPDATE statements can reference a view as long as SQL Server can translate the user's update request unambiguously to updates in the base tables referenced in the view's definition.

So why can this view not be updated in SS2000 SP3 ?

Here is a copy of the view defintion:

ALTER VIEW PS_EMPLOYMENT
(EMPLID, EMPL_RCD, PER_ORG, BENEFIT_RCD_NBR, HOME_HOST_CLASS, LAST_DATE_WORKED, HIRE_DT, REHIRE_DT,
TERMINATION_DT, SENIORITY_PAY_DT, CMPNY_SENIORITY_DT, SERVICE_DT, PROF_EXPERIENCE_DT,
LAST_VERIFICATN_DT, EXPECTED_RETURN_DT, LAST_INCREASE_DT, OWN_5PERCENT_CO, PROBATION_DT,
SECURITY_CLEARANCE, NEE_PROVIDER_ID, POSITION_PHONE, BUSINESS_TITLE, REPORTS_TO, SUPERVISOR_ID)

AS
SELECT A.EMPLID ,A.EMPL_RCD ,A.PER_ORG ,A.BENEFIT_RCD_NBR ,A.HOME_HOST_CLASS ,D.LAST_DATE_WORKED ,
D.HIRE_DT ,D.LAST_HIRE_DT ,D.TERMINATION_DT ,A.SENIORITY_PAY_DT ,A.CMPNY_SENIORITY_DT ,A.SERVICE_DT ,
A.PROF_EXPERIENCE_DT ,A.LAST_VERIFICATN_DT ,D.EXPECTED_RETURN_DT ,A.LAST_INCREASE_DT ,A.OWN_5PERCENT_CO ,
A.PROBATION_DT ,A.SECURITY_CLEARANCE ,C.NEE_PROVIDER_ID ,A.POSITION_PHONE ,A.BUSINESS_TITLE ,D.REPORTS_TO ,
D.SUPERVISOR_ID


FROM PS_PER_ORG_ASGN A ,PS_PER_ORG_INST C , PS_JOB D


WHERE A.EMPLID = C.EMPLID AND A.ORG_INSTANCE_ERN = C.ORG_INSTANCE_ERN AND A.EMPLID = D.EMPLID AND A.EMPL_RCD = D.EMPL_RCD AND D.EFFDT = ( SELECT MAX(EFFDT) FROM PS_JOB JOB2 WHERE D.EMPLID = JOB2.EMPLID AND D.EMPL_RCD = JOB2.EMPL_RCD AND (( JOB2.EFFDT <= { FN CURDATE() }) OR (JOB2.EFFDT > { FN CURDATE() } AND { FN CURDATE() } < ( SELECT MIN(J2.EFFDT) FROM PS_JOB J2 WHERE J2.EMPLID = D.EMPLID AND J2.EMPL_RCD = D.EMPL_RCD) ) )) AND D.EFFSEQ = ( SELECT MAX(EFFSEQ) FROM PS_JOB JOB3 WHERE JOB3.EMPLID = D.EMPLID AND JOB3.EMPL_RCD = D.EMPL_RCD AND JOB3.EFFDT = D.EFFDT )

View 3 Replies View Related

SQL Server Table's Column Referencing Two Parent Tables.

Feb 15, 2008

Hi everybody, 
I know that it is possible for one column to reference two different parent tables by defining two foreign keys on a same column, I have done it and SQL Server does give any error. But I want to know that is it advisable to define multiple foreign key on a column referncing two differnt parent table's primary key in differnt case... ? Means If Case 1 then It should reference to column1 or table1 otherwise it should reference to table2? How is it practicle...?
 
 

View 2 Replies View Related

Referencing Data From A Query

Sep 30, 2006

I'm quite new to using t-sql, so hopefully the answer to this should be fairly simple... I have the following basic stored procedure:

Quote: CREATE PROCEDURE dbo.SP_Check_Login (
@arg_UserEmail VARCHAR(255),
@arg_UserPassword VARCHAR(255))
AS

BEGIN

SELECT a.userArchived,a.userPasswordDate
FROM app_users a
WHERE a.userEmail = @arg_UserEmail
AND a.userPassword = @arg_UserPassword

END;
GO

What I want to do is some conditional statements on the query results.

i.e:
IF (userArchived = 1)
RETURN "Archived"
ELSE IF (userPasswordDate < dateadd(month,-3,getdate())
RETURN "UpdatePassword"
ELSE
RETURN "OK"

So firstly how to I reference the data returned by the query, and secondly am I on the right track with the conditional code?

Thanks, Mike

View 2 Replies View Related

Creating Indexes On Columns That Are Foreign Keys To Primary Keys Of Other Tables

Jul 16, 2014

what the best practice is for creating indexes on columns that are foreign keys to the primary keys of other tables. For example:

[Schools] [Students]
---------------- -----------------
| SchoolId PK|<-. | StudentId PK|
| SchoolName | '--| SchoolId |
---------------- | StudentName |
-----------------

The foreign key above is as:

ALTER TABLE [Students] WITH CHECK ADD CONSTRAINT [FK_Students_Schools]
FOREIGN KEY([SchoolId]) REFERENCES [Schools] ([SchoolId])

What kind of index would ensure best performance for INSERTs/UPDATEs, so that SQL Server can most efficiently check the FK constraints? Would it be simply:

CREATE INDEX IX_Students_SchlId ON Students (SchoolId)
Or
CREATE INDEX IX_Students_SchlId ON Students (SchoolId, StudentId)

In other words, what's best practice for adding an index which best supports a Foreign Key constraint?

View 4 Replies View Related

Referencing A Calculated Field In A Query

Nov 24, 2005

I would have a question, if it is possible to reference a calculated field in T-SQL query. The following expression does not work in SQLExpress 2005

SELECT Qty, UnitPrice, Tax, Qty*UnitPrice as Expr1, Expr1*(1.0 + Tax) AS Expr2

This problem has occurred after upsizing to SQLExpress from Access XP/Jet Engine. Since Access does not have any issue with the expression above, the SQLExpress does not even accept it.

The only way how to avoid the issue in the SQLExpress seems probably to be

- Duplicate some calculations (i.e. expand every expression with duplicating some mathematic operations with some performance loss)

- Utilize computed columns if possible (no idea on performance impact here)

Am I right or is there any other way how to reference a calculated field?

Any suggestion is greatly welcomed! Thanks in advance.

View 1 Replies View Related

Recursive Query Without Self-Referencing Structure

Sep 13, 2007

I need a statement that can return a hierarchy of folders. There are a number of good articles out there describing how to do this in SQL 2005 with a Common Table Expression (CTE) that references itself under a UNION ALL. Yet every example I come across involves a self-referencing table. Unfortunately the architect of my project did not use that simple structure. Instead, we have a Folder table and Folder Properties table. Creating a child Folder involves adding a row in the Properties table that links to a parent. Here's the statement I came up with:

WITH Folders (ID, ParentID, FolderName, FolderDepth)AS ( SELECT FOLDER_ID, NULL, FOLDER_NAME, 0 FROM ZZ_FOLDER WHERE FOLDER_ID = 1 UNION ALL SELECT F.FOLDER_ID, Folders.ID, F.FOLDER_NAME, Folders.FolderDepth + 1 FROM ZZ_FOLDER F INNER JOIN ZZ_FOLDER_PROP FP ON FP.FPROP_FOLDER_ID = F.FOLDER_ID WHERE FP.FPROP_LINK_ID = Folders.ID )SELECT * FROM Folders

The initial statement brings back the top of the folder structure. The recursive statement brings back Folder rows that have an entry in their Property rows for the parent. Yet when I try to execute this, I get:

Msg 4104, Level 16, State 1, Line 1The multi-part identifier "Folders.ID" could not be bound.Msg 4104, Level 16, State 1, Line 1The multi-part identifier "Folders.ID" could not be bound.Msg 4104, Level 16, State 1, Line 1The multi-part identifier "Folders.FolderDepth" could not be bound.

It sounds like all the recursive references to the CTE are unavailable. What am I doing wrong? Would welcome any suggestions, too. I realize this isn't a T-SQL specific question, more SQL in general, but I didn't see a more relevant forum. What follows are some tables/data to run the above statement against.

-- Create Folder TablesCREATE TABLE ZZ_FOLDER ( FOLDER_ID INTEGER NOT NULL PRIMARY KEY, FOLDER_NAME VARCHAR(50))CREATE TABLE ZZ_FOLDER_PROP ( FPROP_ID INTEGER NOT NULL PRIMARY KEY, FPROP_FOLDER_ID INTEGER NOT NULL, FPROP_LINK_TYPE VARCHAR(50), FPROP_LINK_ID INTEGER NOT NULL)GO-- Populate Folder TablesINSERT INTO ZZ_FOLDER VALUES (1, 'Top Level')INSERT INTO ZZ_FOLDER VALUES (2, 'Second Level A')INSERT INTO ZZ_FOLDER VALUES (3, 'Second Level B')INSERT INTO ZZ_FOLDER VALUES (4, 'Second Level C')INSERT INTO ZZ_FOLDER VALUES (5, 'Third Level A1')INSERT INTO ZZ_FOLDER VALUES (6, 'Third Level A2')INSERT INTO ZZ_FOLDER VALUES (7, 'Third Level A3')INSERT INTO ZZ_FOLDER VALUES (8, 'Third Level B1')INSERT INTO ZZ_FOLDER VALUES (9, 'Third Level C1')INSERT INTO ZZ_FOLDER VALUES (10, 'Third Level C2')INSERT INTO ZZ_FOLDER VALUES (11, 'Fourth Level A3A')INSERT INTO ZZ_FOLDER_PROP VALUES (1, 2, 'Folder', 1)INSERT INTO ZZ_FOLDER_PROP VALUES (2, 3, 'Folder', 1)INSERT INTO ZZ_FOLDER_PROP VALUES (3, 4, 'Folder', 1)INSERT INTO ZZ_FOLDER_PROP VALUES (4, 5, 'Folder', 2)INSERT INTO ZZ_FOLDER_PROP VALUES (5, 6, 'Folder', 2)INSERT INTO ZZ_FOLDER_PROP VALUES (6, 7, 'Folder', 2)INSERT INTO ZZ_FOLDER_PROP VALUES (7, 8, 'Folder', 3)INSERT INTO ZZ_FOLDER_PROP VALUES (8, 9, 'Folder', 4)INSERT INTO ZZ_FOLDER_PROP VALUES (9, 10, 'Folder', 4)INSERT INTO ZZ_FOLDER_PROP VALUES (10, 11, 'Folder', 7)GO/*Top Level Second Level A Third Level A1 Third Level A2 Third Level A3 Fourth Level A3A Second Level B Third Level B1 Second Level C Third Level C1 Third Level C2*/

View 3 Replies View Related

Problem Referencing A Column In A Table Variable In A Query.

Apr 23, 2006

Hello All

I have the following problem running an sp with a table variable (sql server 2000) - the error which occurs at the end of the query is: "must declare the variable @THeader" . @THeader is the name of the variable table and the error occurs with such references as @THeader.ApplyAmt, @THeader.TransactionHeaderID, etc.

declare @THeader TABLE (
TransactionHeaderID [int] NOT NULL ,
PatientID [int] NOT NULL ,
TransactionAllocationAmount [money] NOT NULL ,
ApplyAmt [money] NULL ) - create table variable

insert into @THeader select TransactionHeaderID,PatientID,TransactionAllocationAmount,ApplyAmt from mtblTransactionHeader where PatientID = 9 - fill the table variable

UPDATE @THeader
set TransactionAllocationAmount =
(SELECT isnull(Sum(mtblTransactionAllocation.Amount),0)
FROM mtblTransactionAllocation where mtblTransactionAllocation.DRID = TransactionHeaderID or
mtblTransactionAllocation.CRID = TransactionHeaderID) from @THeader, mtblTransactionAllocation - do the updates on the table variable

Update @THeader
set ApplyAmt = (SELECT mtblTransactionAllocation.Amount
FROM mtblTransactionAllocation where mtblTransactionAllocation.DRID = TransactionHeaderID and
mtblTransactionAllocation.CRID = 187 and PatientID = 9) from @THeader, mtblTransactionAllocation - do the updates on the table variable

- below is where the problems occur. It occurs with statements referencing columns in the table variable, i.e. @THeader.ApplyAmt

UPDATE mtblTransactionHeader
SET mtblTransactionHeader.TransactionAllocationAmount = @THeader.TransactionAllocationAmount,
mtblTransactionHeader.ApplyAmt = @THeader.ApplyAmt
FROM @THeader, mtblTransactionHeader
WHERE @THeader.TransactionHeaderID = mtblTransactionHeader.TransactionHeaderID - put the values back into original table


Thanks in advance

smHaig









View 1 Replies View Related

Mind-boggling Gridview Results! Different Results For Different Teams..

Jun 18, 2008

Hi all, I have the following SQLDataSource statement which connects to my Gridview:<asp:SqlDataSource ID="SqlDataSourceStandings" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>"  SelectCommand="SELECT P.firstName, P.lastName, T.teamName, IsNull(P.gamesPlayed, 0) as gamesPlayed, IsNull(P.plateAppearances,0) as plateAppearances, IsNull( (P.plateAppearances - (P.sacrifices + P.walks)) ,0) as atbats, IsNull(P.hits,0) as hits, P.hits/(CONVERT(Decimal(5,2), IsNull(NullIF(P.atbats, 0), 1))) AS [average], (P.hits + P.walks)/(CONVERT(Decimal(5,2), IsNull(NullIF( (P.atbats + P.sacrifices + P.walks) , 0), 1)))  AS [OBP], (P.hits - (P.doubles + P.triples + P.homeRuns) + (2 * P.doubles) + (3 * P.triples) + (4 * P.homeRuns)) / (CONVERT(Decimal(5,2), IsNull(NullIF(P.atbats, 0), 1))) AS [SLG], P.singles, P.doubles, P.triples, P.homeRuns, P.walks, P.sacrifices, P.runs, P.rbis FROM Players P INNER JOIN Teams T ON P.team = T.teamID ORDER BY P.firstName, P.lastName"></asp:SqlDataSource>There are 8 teams in the database, and somehow the average and obp results are as expected for all teams except where T.teamID = 1.  This doesn't make sense to me at all!  For example, I get the following results with this same query: First NameLast NameTeamGPPAABHAVGOBPSLG1B2B3BHRBBSACRRBI

BrianAustinHope83432230.7187500.7352941.15625014612201221

GabrielHelbigSafe Haven62119141.0000000.9375002.1428576404111519

MarkusJavorSafe Haven82927200.8695650.8000001.21739114501021218

RobBennettMelville83029240.8275860.8333331.55172411904102117

AdamBiesenthalSafe Haven82929210.9130430.9130431.56521712631001015

ErikGalvezMelville82625180.7200000.7307691.24000011322101015 As you can see, all teams except for Safe Haven's have the correct AVG and OBP.  Since AVG is simply H/AB, it doesn't make sense for Gabriel Helbig's results to be 1.00000. Can anyone shed ANY light on this please?Thank you in advance,Markuu  ***As a side note, could anyone also let me know how I could format the output so that AVG and OBP are only 3 decimal places? (ex: 0.719 for the 1st result)*** 

View 2 Replies View Related

Help On Foreign Keys And Tables

Jan 7, 2008

hi.
How to update FormA table from customer table. Let say i wish to keep small number of fields from each table so i use foreign keys as reference.
However i had a problem when i tried to save the relationships of both tables, i receive the error that FormA_id is not able to insert null into value.
Cust_id(PK) is identify column, as well FormA_id(FK) and FormA_id(PK) too. For example, when i insert a record from customer table, it will automatically create id for FormA.
Table structure. Customer
cust_id(PK),name,age,formA_id(FK)
Table structure, FormA
formA_id(PK), info, date,
How to solve ?

View 1 Replies View Related

Foreign Keys And Bridge Tables

Aug 26, 2005

I have a setup with a bridge table. There are about 5 different tables
on one side of the bridge (all with compatable PK columns) one of which
is called 'mobilesub', and one on the other side called
'allcostcenters'. The bridge table is called 'subaccountcostcenter'.

I can enter data for mobilesub in the bridge table. But then when I try
to enter the info into the bridge table for any of the other tables,
such as localsub, there is a conflict like this:

INSERT statement conflicted with TABLE FOREIGN KEY constraint
'FK_subaccountcostcenter_mobilesub'. The conflict occurred in database
'test1', table 'mobilesub'.
The statement has been terminated.

Is there some rule against using a bridge table that references several
different tables, and I'm just not aware of it. Because I've done
everything I can to make sure the info from the different tables don't
conflict . . .
The same error comes up if I do the localsub table first--in that case
the foriegn key messing me up is FK_subaccountcostcenter_localsub. So
it's not something with the individual tables.

I need experienced advice lol
Thanks

View 1 Replies View Related

Foreign Keys On System Tables

Jan 21, 2005

I know altering the schema of system tables is a big no-no, but I was wondering if setting up a table that has foreign keys pointing to a system table is bad.

Basically what I'm refering to is in some cases I have CreationDate and CreatedBy fields in my tables that correspond to GETDATE() and USER_NAME() functions in insert statements....I want the CreatedBy field to be a valid SQL server DB username ... and not some unchecked string value (SYSNAME actually)

View 3 Replies View Related

Using Triggers To Add Foreign Keys To Child Tables

Apr 29, 2004

I have a situation that I must resolve. I have a program being used by many but I had to create a new table to provide a new feature. The problem I have is this table must use the primary key from the parent table as its primary key, meaning when a user adds a new record to parent table, I need to instantly add the primary key to the child table. Now this was done in the program using sql statements, but I need to implement a trigger or such as to keep me from having to reinstall application on many computers.

basically person inserts new record, then I need to get the new primary ket and add insert it into the child tables. how can I do this with a trigger. I have tried to use an insert into statment with my trigger, but I can't seem to pass the parameters correctly.



CREATE Trigger dbo.Table_Borrower_Insert_Keys
ON Table_Borrower
AFTER INSERT
AS
begin
declare @bid as int

@bid = select MAX(BorrowerID)
FROM Table_SoldProgression

INSERT Table_SoldProgression(BorrowerID)
values (@bid)
end
GO


another attempt

CREATE Trigger dbo.Table_Borrower_Insert_Keys
ON Table_Borrower
AFTER INSERT
AS

INSERT Table_SoldProgression(BorrowerID)
values (select MAX(BorrowerID)FROM Table_Borrower)

GO

View 3 Replies View Related

SQL XML :: Shred To Relational Tables - Creating Foreign Keys

Oct 7, 2015

I'm shredding the below xml into relational tables. Each element of the xml has it's own table and there is a foreign key to join the tables, you can see this in the below picture. The process I follow is each relational table I always bring the nesecary xml and store it in the table and when shredding I always look at the parent table.So for example when processing the seat table, I use seat xml from the parent route table, also taking the ROUTEID from the route table. The reason I do this is all about taking the id from the previous step to create the relationships between the tables. without taking the xml down to the tables?The problem with this approach is I have xml stored in most tables and the tables are becoming very large.

<Route Type="OneWay" >
<Seat Type="FirstClass">
<Prices>
<Price Price="10" />
<Price Price="11" />
</Prices>

[code]....

View 4 Replies View Related

Referencing SQLDataSource In A Sub

Nov 16, 2006

I have a SqlDataSource  - The select statement
selects the DB row with an ID that equals a querystring value.... So I
know I am only selecting one row..Now I want to create a little
Sub that grabs any field(s) of my choice and then I can assign the
value of it to a textbox on my page or a variable if I need to... Any
idea how I actually reference the fields via the SQLDataSource in a
sub? I see you can reference parameters using..SqlDataSource1.SelectParameters()I was hoping I could use something similar to get the actual DB fields like the below...SqlDataSource1.Select("MyDataBaseField").Value = TextBox.TextCan anyone help please??Thanks

View 7 Replies View Related

Referencing Sql In IF THEN ELSE Statement

Mar 13, 2007

The Background:
From page 1 a search is created and this value is converted to a querystring and given the name "id=" and passed to page 2.  Page 2 then does a lookup in the sql 2000 db useing this querystring.
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ListingDBConnectionString %>"
SelectCommand="SELECT [ID], [CompName], [Package] FROM [CDetails] WHERE ([ID] = @ID)">
<SelectParameters>
<asp:QueryStringParameter Name="ID" QueryStringField="id" Type="Int32" />
</SelectParameters>
</asp:SqlDataSource>
 
The Problem:
What I then need to do is an IF THEN ELSE statement.
IF [Package in SQL1] = 4 Then
Package 4
IF [Package in SQL1] = 3 Then
Package 3
Only how do I reference the sql value in the if statement.
 I have tried
<%IF Eval("Package") = 4 Then %> and with Bind - No good

View 4 Replies View Related

Image Referencing

May 4, 2008

Hi all, How do I return pictures along with my search results?  For example, I have a shoe database and for the results I would like one column to hold a picture of the shoe (the other columns hold Brand, Name, Price, etc)  The way I am looking at implementing this is by referencing the image and retrieving it from the server.  I'm a bit lost on how to do this though.  Any help? Thanks in advance,Nick 

View 4 Replies View Related

Self-referencing Table

Sep 1, 2007

Hi,

I'm using MS SQL 2005 Express.

CREATE TABLE Folder (
iD int NOT NULL IDENTITY (1, 1) PRIMARY KEY,
folderName varchar(50) NOT NULL,
parentFolderID int NULL
FOREIGN KEY REFERENCES Folder (iD)
)
GO

if I add an ON DELETE CASCADE to the foreign key, then i get an error... which is annoying. If a folder is deleted, then all its sub-folders should also be automatically deleted.

The error is: 'Introducing FOREIGN KEY constraint 'FK__Folder__parentFo__7D78A4E7' on table 'Folder' may cause cycles or multiple cascade paths. Specify ON DELETE NO ACTION or ON UPDATE NO ACTION, or modify other FOREIGN KEY constraints.'

Anyone got any advice?

View 1 Replies View Related

Referencing To A Function..

Jul 20, 2005

I was created a function named aa.It is possible to reference to it without using the dbo. prnounce ?eg: select aa(), not select dbo.aa()thanks,Viktor

View 1 Replies View Related

Referencing Subreport Value

Nov 16, 2007

Hello,

I need to sum up a sub-report value, but I don't know the syntax to reference the subreport.

How do I reference a subreports value to sum it up?

Thanks,

View 7 Replies View Related

Trigger Referencing

Nov 28, 2007



I'm setting up a trigger that will fire off an email explaining that this entry has been updated, however I need a reference to the updated row so I only send that bit of information off.

Heres my code thus far:


ALTER TRIGGER [dbo].[completeCreation2]

ON [Database_Test].[dbo].[Projects]

AFTER UPDATE

AS

-- SEND EMAIL

EXEC msdb.dbo.sp_send_dbmail

@profile_name = 'Administration',

@recipients = 'email@email.com',

@body = 'A new project has been created view details of the project below:',

@subject = 'Project Created',

@body_format = 'TEXT',

@importance = 'High',

@query = 'Select * FROM updated';

BEGIN

-- SET NOCOUNT ON added to prevent extra result sets from

-- interfering with SELECT statements.

SET NOCOUNT ON;

END


I thought the select From updated would work but it doesn't I need a reference for that line, select * FROM _____.

Thanks

View 3 Replies View Related

Referencing Issues

Apr 17, 2008



I am trying to run a mobile device with SQL's mobile 3.5.
When I run my application I am given an error that sqlceme35.dll plus several other references cannot be found

When I try referencing them It does not allow me too.
Is there any steps I should take to make referencing allowed?

View 1 Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved