I'm using MS SQL Server Studio Express 9.0. When selecting SQL Server Compact Edition, I'm able to create tables and primary keys with no problem. But how do I create a relationship with another table (foreign key)?
Bob K.
I want to create a table with primary key , and put relationship with second table.
View 5 Replies View RelatedHi all,
I use the following 3 sets of sql code in SQL Server Management Studio Express (SSMSE) to import the csv data/files to 3 dbo.Tables via CREATE TABLE & BUKL INSERT operations:
-- ImportCSVprojects.sql --
USE ChemDatabase
GO
CREATE TABLE Projects
(
ProjectID int,
ProjectName nvarchar(25),
LabName nvarchar(25)
);
BULK INSERT dbo.Projects
FROM 'c:myfileProjects.csv'
WITH
(
FIELDTERMINATOR = ',',
ROWTERMINATOR = ''
)
GO
=======================================
-- ImportCSVsamples.sql --
USE ChemDatabase
GO
CREATE TABLE Samples
(
SampleID int,
SampleName nvarchar(25),
Matrix nvarchar(25),
SampleType nvarchar(25),
ChemGroup nvarchar(25),
ProjectID int
);
BULK INSERT dbo.Samples
FROM 'c:myfileSamples.csv'
WITH
(
FIELDTERMINATOR = ',',
ROWTERMINATOR = ''
)
GO
=========================================
-- ImportCSVtestResult.sql --
USE ChemDatabase
GO
CREATE TABLE TestResults
(
AnalyteID int,
AnalyteName nvarchar(25),
Result decimal(9,3),
UnitForConc nvarchar(25),
SampleID int
);
BULK INSERT dbo.TestResults
FROM 'c:myfileLabTests.csv'
WITH
(
FIELDTERMINATOR = ',',
ROWTERMINATOR = ''
)
GO
========================================
The 3 csv files were successfully imported into the ChemDatabase of my SSMSE.
2 questions to ask:
(1) How can I designate the Primary and Foreign Keys to these 3 dbo Tables?
Should I do this "designate" thing after the 3 dbo Tables are done or during the "Importing" period?
(2) How can I set up the relationships among these 3 dbo Tables?
Please help and advise.
Thanks in advance,
Scott Chang
When I try to insert a record on my DB (SQL 2005 Express) I get a constraint error. This is my table setup which has been simplified to expose the problem I have:
Categories TABLEint CatId PKvarchar CatName :
Items TABLEint ItemId PKvarchar ItemName :
X_Items_Categoriesint CatIdint ItemId
So basically I have a one-to-many relationship between Items and Categories, in other words each item is associated to one or more categories and this association is done via the X_Items_Categories cross table. On this cross table I set two constraints:
The CatId of each entry in the cross table (X_Items_Categories) must exist in the Category table, and
Hi
I have a one to many relationship between two MS SQL tables.
When inserting a record in the master table (primary key is autoinc) how can I get this value for setting in the foreign key details table?
TIA
I have two tables and I'm trying to create a one to many relationship (master table can have many records in the details table)
I created a column in my details table with with ID of the primary key in the master table.
The primary key ID isn't inserted as a foreign key when I insert a record. I specifed the relationship in EM.
Not sure why the primary key ID isn't inserted as a foreign key into my details table?
Any help is greatly appreciated. Thanks.
-Dman100-
HiIm a sql newbie , and have created two tables with a foreign keyrelationship.How do i insert into these tables. If i insert into the primary tablewill the foreign key field in the second table be automaticly updatedby ms sql server ?
View 1 Replies View RelatedHey guys,
I would like to know what the following options means when we set a foreign key relationship between two tables and when to use them ( yes or no):
1- Check existing data on creation or Re-Enabling.
2- Enforce contraint for replication
3- Enforce foreing key contraint
Thx.
Hi i have two tables
X and Y
X is the Parent table and Y is the child
X has gpikey char(14) and Record type char(1) as Primary key
y has Name as primary key and column xgpi char(14) which should be the foreignkey to table X
what approach should i take to establish relationship between these two tables.
gpikey of recordtype 5 is equal to value in xgpi in table y
ex: data
Table X
gpikey recordtype
123 1
2345 2
272626 5
Table Y
Name XGPI
dhdhd 272626
x and y are having one to many relationships
I'm having trouble defining a relationship in SQL Express with a concatenated foreign key.
I have 3 tables. Date, Company and Detail
Date has a PK1
Company has a PK2
Detail has a concatenated foreign Key of PK1, PK2
When I go to set the foreign key relationship in Management Studio 'Tables and Columns', it seems I can only select 1 primary key table on the left for my 2 foreign keys. How can I add 2 primary key tables to point to each FK in my detail table?
Hi,
I have a table users where there is a user_id and an department column.
Also i have a table called KRS where there are the same columns, when a userid is given i want to auto fill in the departmentid,
Can someone help me with this?
Cheers Wim
I have to load data into destination table, it has foreign key relation to two different tables called person table and organization table . sample data to be loaded is like
person_id organization_id
1 Null
2 NULL
Null 1
null null
person table and organization table doesn't have null values in them, when I try to load this data none of them are laoded, I know either person_id or organization id having null value is failing foreign key constraint. But I want to transfer all the rows except the ones having both nulls. how this can be achieved ?
Should we have foreign key relationship between two slowly changing dimensions?
Most of the cases we talked about are about how to build an SLC, any example of trying to have two SLCs with FK relationship in a snow flake schema?
I want to create a 1-many relationship. Parent table has a primarykey, child table has no primary key. The child table does have anindex with all four fields of the parent's PK. How can I do this?Thanks, Bob C.
View 9 Replies View RelatedFor ex.
Table Match_List ( MatchID, UserID_A, UserID_B)
constraints like
MatchID primary key
UserID_A <> UserID_B
unqiue index (UserID_A,UserID_B)
but I wish to exclude duplicated rows like 1,1,2 & 2,2,1,
cause UserA to UserB, and UserB to UserA are the same thing.
How can I get this?
OK - I have a two tables in a database. Table one contains an ID, 'oneID', field as the primary key. It is auto-incremented. Table two has ID field, 'twoID', as the primary key. This field also auto-increments. Table two also has 'oneID' as the foreign key.
Now, my question is, how do I get the foreign key in table two to auto-increment in conjuction with table one's primary key? They are after all the same data. Do I have to manually code to get table one data and save it to table two data?
thanks
I am having a little trouble getting this to work right, but have come a ways since I started this.......other tables created first and with no problems..... then these two with the last table being the problemI need to set one foreign key in the second table referencing the first table.But, the primary key is clustered with the two foreign keys and I get the error....There are no primary or candidate keys in the referenced table 'courseScores' that match the referencing column list in the foreign key 'FK_course'.CREATE TABLE dbo.courseScores ( courseId varchar(20) NOT NULL CONSTRAINT FK_courseId_courseStructure2 FOREIGN KEY (courseId) REFERENCES courseStructure (courseId),
studentId varchar(20) NOT NULL CONSTRAINT FK_studentId_students2 FOREIGN KEY (studentId) REFERENCES students (studentId),
CONSTRAINT PK_courseScore PRIMARY KEY CLUSTERED (courseId, studentId)
)CREATE TABLE dbo.objScores ( tmp int IDENTITY(1,1) PRIMARY KEY, objective varchar(50) NOT NULL, courseId varchar(20) NOT NULL CONSTRAINT FK_course FOREIGN KEY (courseId) REFERENCES courseScores (courseId) )
Once I get it working, then the tmp will be gone and then set 3 foreign keys as the clustered primary, fyi.Not sure how to reference half a primary key?Any help is greatly appreciated.....Thanks all,Zath
Can a column act as both primary key and foreign key, if so what is script.
And can a table have more than one primary keys/foreign keys, if so what is the script.
I'm currently using Oracle and receiving this error:
SQL Error: ORA-02291: integrity constraint (43437001.ATHLETE_FK1) violated - parent key not found
02291. 00000 - "integrity constraint (%s.%s) violated - parent key not found"
*Cause: A foreign key value has no matching primary key value.
*Action: Delete the foreign key or add a matching primary key.
When inserting this value:
INSERT INTO ATHLETE VALUES ('A001','TOM','HANKS','03-FEB-90','USA','C001');
With Tables:
CREATE TABLE ATHLETE(
ATHLETEID CHAR(4),
ATHLETEFIRSTNAME VARCHAR2(20),
ATHLETELASTNAME VARCHAR(20),
ATHLETEDOB DATE,
REPCOUNTRY VARCHAR2(12),
[Code] ......
I think the error is to do with the Athletes table (primary/foreign key)
How would I fix this in order to insert values without error?
I have an application in which i need to get the foreign key fieldsfrom a table and then get all the foreign keys primary key field fromthe linking table. Could some one tell me how i do this usingINFORMATION_SCHEMA. I have tried and can get the foreign keys but notsure how to get the associated primary keys.
View 1 Replies View Related
Hi,
In my table1, I have a composite primary key ssn+firstname+lastname.
In table2 I have ssn, firstname, lastname, col1. In table2 I want to create a foreign key which references table1 primary key?
table1 and table2 has the primary, foreign key relationships. Still table2 need primary key. In table2 Can I make the ssn+Firstname+Lastname as primary key? or one column id as auto increment?
Which is best way?
Thanks
Hi All,
It seems I have been requested to carry out a complex query and the best way I think I can do this is with the use of a stored procedure. The problem is that I am not quite sure whether my SP is stated correctly and also how I would go about stating the SP in my VB.net code!
I would be ever so grateful if somebody could look over my SP code and possibly recommend a way of stating my code. My ability is limited so I would appreciate it if examples could be used with possible relations to my problem.
The Problem?
Tables:
1.tblRisk: Ref(pk), subject, status(fk), staff(fk), Dept(fk)
2.tblDept: Ref(pk), Department
The SP should state that Department should appear as the end result of the query when the page is loaded. So when a row is selected in tblRisk, dependant upon what the Dept is in that table, it then populates the department in which it is associated with from tblDept. I have left the SP below.
Many Thanks,
Kunal
CREATE PROCEDURE dbo.ShowMe @yourInputValue INTAS SELECT tblDept.Department FROM tblDept JOIN tblRisk ON tblDept.Ref = tblRisk.Dept WHERE tblDept.Ref = @yourInputValue RETURN 0GO
I have two tables: table 1 and table 2. The primary key of table is composite key of two collumns and table 2 is the child of parent table 1. Is it possible to create / define a foreign key constraint using a composite primary key?
View 10 Replies View RelatedHi,
How do I delete data which is a Foreign Key in another table?
For example;
string query = "DELETE * from user_details WHERE user_ID = '" +userID.Text+ "';
The user_ID is the Primary Key in the user_details table and also a Foreign Key in other tables.
Thank you. (:
I am having trouble dropping constraints(Primary and Foreign Keys). I would like to do so so I can truncate the tables and repopulate them. Any time I use the DROP CONSTRAINT #### on one table, I get an error message saying this is referenced in another table. Any help in how to drop the keys so I can truncate the tables in a database would be appreciated. I must be overlooking something simple. Thanks for the help.
Regards,
Mark
Hi,
I have a doubt, can anyone please clarify me.
I have created the following table,
create table z
(
eno int,
deptno char(2),
ename varchar(5),
constraint pk_eno_deptno primary Key(eno,deptno)
)
and I tried to establish a foreign key based on the above defined table. It's giving error,
create table z_dup
(
eno int FOREIGN KEY REFERENCES z(eno),
deptno char(2)
)
go
Error:-
*****
There are no primary or candidate keys in the referenced table 'z' that match the referencing column list in the foreign key 'FK__z_dup__eno__18CE1BA6'.Could not create constraint. See previous errors.
Even I tried to create a foreign key like the following,
create table z_dup
(
eno int FOREIGN KEY REFERENCES z(eno,deptno),
deptno char(2)
)
go
Error:-
********
More than one key specified in column level FOREIGN KEY constraint, table 'z_dup'.
Can anyone please help me to create a foreign key relation with the base table.
tks in advance,
Srinivasan
Hi,
I have two tables.
CREATE TABLE Service(
SERVId varchar (10) NOT NULL,
SERVName varchar (30) NOT NULL,
SERVDesc TEXT NULL,
PRIMARY KEY(SERVId)
)
CREATE TABLE New(
SERVId varchar (10) NOT NULL,
NDId varchar (10) NOT NULL,
NDName varchar (30) NOT NULL,
NDDesc text NULL,
PRIMARY KEY(SERVId,NDId)
FOREIGN KEY(SERVId)
REFERENCES Service(SERVId)
)
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
I am trying to create a FK using a composite PK and here are the details that I want to achieve.
Table -A
Column A1 not null,
Column A2 not null
Primary key (A1, A2).
Table -B
Column B1 Primary key.
Column B2 not null
FK (B2) References A(A1).
When I try to do this I am getting some errors. Questions: First of all is this possible? if yes, then how I can create it.
I have a query that returns contacts connected to a client, but the problem is that it's only returning a result when a contact is associated with a client, even if the client does exist in the db. i want it to still return the client if the client exists.
SELECT * FROM clients, addressbook where clients.clientid = addressbook.clientid AND (clients.clientname LIKE '" . strtoupper($_GET['txtfname'])."%')
Be warned, index padding is not included in this, and I'm not sure the fillfactor setting is correct.
set nocount on
create table #PK(constraint_schema sysname not null, constraint_name sysname not null, sql varchar(4000) not null, constraint PK_#PK primary key clustered(constraint_schema, constraint_name))
create table #cols(constraint_schema sysname not null, constraint_name sysname not null, column_name sysname not null, ordinal_position int not null, constraint PK_#PKcol primary key clustered(constraint_schema, constraint_name, ordinal_position))
create table #FK(constraint_schema sysname not null, constraint_name sysname not null,
unique_constraint_schema sysname not null, unique_constraint_name sysname not null,
sql varchar(4000) not null, constraint PK_#FK primary key clustered(constraint_schema, constraint_name))
insert into #PK
select constraint_schema, constraint_name, 'ALTER TABLE ' + quotename(table_schema) + '.' + quotename(TABLE_NAME) +
' ADD CONSTRAINT ' + quotename(CONSTRAINT_NAME) +
' PRIMARY KEY ' + CASE WHEN si.indid<>1 THEN 'NON' ELSE '' END +
'CLUSTERED (>cols<) WITH FILLFACTOR=' + cast(si.OrigFillFactor as varchar) + ' ON ' + quotename(fg.groupname)
AS SQL
from INFORMATION_SCHEMA.TABLE_CONSTRAINTS TC
INNER JOIN sysindexes si on TC.CONSTRAINT_NAME=si.name
inner join sysfilegroups fg on si.groupid=fg.groupid
WHERE CONSTRAINT_TYPE IN('PRIMARY KEY','UNIQUE')
insert into #fk
select c.constraint_schema, c.constraint_name, c.unique_constraint_schema, c.unique_constraint_name,
'ALTER TABLE ' + quotename(F.table_schema) + '.' + quotename(F.table_name) +
' ADD CONSTRAINT ' + quotename(F.constraint_name) +
' FOREIGN KEY(>cols<) REFERENCES ' + quotename(r.table_schema) + '.' + quotename(r.table_name) +
'(>rcols<)'
AS sql
FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS F
INNER JOIN INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS C ON F.constraint_schema=C.constraint_schema AND f.constraint_name=c.constraint_name AND F.constraint_type='FOREIGN KEY'
INNER JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS R ON R.constraint_schema=C.unique_constraint_schema AND r.constraint_name=c.unique_constraint_name AND r.constraint_type in ('PRIMARY KEY','UNIQUE')
ORDER BY F.table_name, r.table_name
insert into #cols
select constraint_schema, constraint_name, COLUMN_NAME, ORDINAL_POSITION from INFORMATION_SCHEMA.KEY_COLUMN_USAGE
declare @ctr int, @max int, @delim varchar(1)
select @ctr=1, @max=max(ordinal_position), @delim='' from #cols
set nocount on
while @ctr<=@max
BEGIN
update P SET SQL=Replace(SQL, '>cols<', @delim + quotename(c.column_name) + '>cols<')
FROM #PK P INNER JOIN #cols C ON P.constraint_schema=C.constraint_schema AND P.constraint_name=C.constraint_name
WHERE C.ORDINAL_POSITION=@ctr
UPDATE F SET SQL=Replace(Replace(SQL, '>cols<', @delim + quotename(c.column_name) + '>cols<'), '>rcols<', @delim + quotename(r.column_name) + '>rcols<')
FROM #FK F INNER JOIN #cols C ON F.constraint_schema=C.constraint_schema AND F.constraint_name=C.constraint_name AND C.ordinal_position=@ctr
INNER JOIN #cols R ON F.unique_constraint_schema=R.constraint_schema AND F.unique_constraint_name=R.constraint_name AND C.ordinal_position=R.ordinal_position
select @ctr=@ctr+1, @delim=','
END
set nocount on
update #PK SET SQL=Replace(SQL, '>cols<', '')
update #FK SET SQL=Replace(Replace(SQL, '>cols<', ''), '>rcols<', '')
select sql from #PK
select sql from #FK
drop table #pk
drop table #fk
drop table #cols
I was trying a joining example provided in my book in which customer is a table and person is another table. The query provided in the book is this... USE AdventureWorks2012;
GO
SELECT c.CustomerID, c.PersonID, p.BusinessEntityID, p.LastName
FROM Sales.Customer AS c
INNER JOIN Person.Person AS p ON c.PersonID = p.BusinessEntityID;
This is the query that I did....
SELECT
c.CustomerID,p.FirstName,p.MiddleName,p.LastName
FROM
Sales.Customer AS c INNER JOIN Person.Person AS p
ON
c.CustomerID=p.BusinessEntityID
ORDER BY
p.BusinessEntityID;
Keys :-
Person Table
[PK_Person_BusinessEntityID]
[FK_Person_BusinessEntity_BusinessEntityID]
Customer Table
[PK_Customer_CustomerID]
[FK_Customer_Person_PersonID]
However,both of them gives a very different result set.But my question is why do we need to use the Customer.PersonID instead of Customer.CustomerID. Is it really important to use one primary key and one foreign,is there any specific reason why the book showed c.personId=p.BusinessEntityId.??
I have a DB with 100 tables. I was wondering if anybody knows a quick way to list primary and foreign key with the column name for all the tables.
Your help would make my life a lot easier
thanks
What is the simple way to remember Primary and foreign key?
Why is the ID column in a table declared as a integer datatype?