Two foreign keys to one primary key

I'm having trouble displaying information for two foreign keys in my table. My goal is to display the first and last name of both a Project Manager and Account Manager. I have a "Jobs" table linked to an "Employees" table.
Jobs
ProjectMgrID
AcctMgrID
Employees
EmployeeID
LastName
FirstName
Both ProjectMgrID(fk) and AcctMgrID(fk) are linked to EmployeeID(pk). When I build a query, I am not sure how to display both the FirstName and LastName fields for both. It only allows me to add them once, and when I add them twice it just displays the same information twice.
Please help!

Welcome to the forum!
It looks like you'll need to join to EMPLOYEES twice.
Something like the following:
SELECT e1.firstname
,       e1.lastname
,       e2.firstname
,       e2.lastname
FROM    jobs
JOIN    employees e1    ON e1.employeeid = jobs.projectmgrid
JOIN    employees e2    ON e2.employeeid = jobs.acctmgrid
;

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Can I have more than one primary key ???????

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Can we have more than one primary keys to a single table in oracle? ( Not the composite key)
Please somebody answer..
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811935 wrote:
Can we have more than one primary keys to a single table in oracle? ( Not the composite key)
In principle a table can have multiple keys if you need them. It is a very strong convention that just one of those keys is designated to be "primary" but that's just a convention and it doesn't stop you implementing other keys as well.
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More than One Primary Key

Hi,
How to create more than one primary key in TT
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Hi 933663,
What is a problem?
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hi
i'm working with OWB 9.2,I was imported the table from database,when i validating that it is giving message:
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Hi Ashok,
I'm quite curious how you managed to get a table with 2 PK's.
I tried it myself:
=======================================================
SQL>create table x(c1 number constraint pk1 primary key,c2 number constraint pk2 primary key, c3 date);
create table x(c1 number constraint pk1 primary key,c2 number constraint pk2 primary key, c3 date)
ERROR at line 1:
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SQL>ed
Wrote file afiedt.buf
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SQL>/
Table created.
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Is it possible for you to drop the table in the database, correct the definition of the table in OWB and then deploy that corrected version to the database?
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Please see if these docs help.
Troubleshooting: FRM-30085 [ID 783768.1]
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I dont understand why do you increase the DML array size..
Because it says in the HELP
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Two foreign keys reference on primary key

There are two tables:
1) table CALENDAR with primary key: cal_id
2) table FACTS with some columns, two of them are dates: cal_id_start_process, cal_id_stop_process
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How to create two foreign key on one table primary key?

More complex. In your example there'll be such SQL:
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where c.cal_id = f.cal_id_start and c.cal_id = f.cal_id_stop
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In my case, I want for such join:
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Edited by: annylut on Dec 22, 2011 3:33 PM

More then one Primary Key?

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How to create one primary key for each vendor

Hi all
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Hi,
In Mapping Make the statement is 0-unbounded.For each vendor create a statement.This will solve your problem.
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TIPS(9):PARENT-CHILD(FOREIGN KEY) 관계를 갖는 MASTER TABLE의 PRIMARY KEY 확인.

제품 : SQL*PLUS
작성날짜 : 1996-10-21
TIPS(9) : PARENT-CHILD관계를 갖는 TABLE의
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** Usage : @Show_Positions Parent_Table Child_Table
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SET VERIFY OFF
CLEAR BREAK
BREAK ON CONSTRAINT_NAME ON TABLES
SELECT SUBSTR(CONSTRAINT_NAME,1,27) CONSTRAINT_NAME,
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SUBSTR(POSITION,1,3) POSITION,
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SUBSTR(COLUMN_NAME,1,25) COL_NAME,
SUBSTR(POSITION,1,3) POSITION,
SUBSTR(OWNER,1,7) OWNER
FROM USER_CONS_COLUMNS
WHERE TABLE_NAME = UPPER('&2')
AND CONSTRAINT_NAME LIKE 'FK%'
ORDER BY 1 DESC , 4 ASC;
< 실행 예 >
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CONSTRAINT_NAME TABLES COL_NAME POS
PK_EMP_SERVICE EMP_SERVICE EMP_ID 1
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제품 : SQL*PLUS
작성날짜 : 1996-10-21
TIPS(9) : PARENT-CHILD관계를 갖는 TABLE의
PRIMARY key, FOREIGN key의 COLUMN 명과 POSITION 확인
==============================================================
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** Usage : @Show_Positions Parent_Table Child_Table
** Description : Shows Primary And Foreign Key Positions
** WARNING : 이 문장은 해당 Table의 Constraint생성시 Naming
** Convention을 따른 경우에 적용되도록 되어 있다.
SET VERIFY OFF
CLEAR BREAK
BREAK ON CONSTRAINT_NAME ON TABLES
SELECT SUBSTR(CONSTRAINT_NAME,1,27) CONSTRAINT_NAME,
SUBSTR(TABLE_NAME,1,15) TABLES,
SUBSTR(COLUMN_NAME,1,15) COL_NAME,
SUBSTR(POSITION,1,3) POSITION,
SUBSTR(OWNER,1,7) OWNER
FROM USER_CONS_COLUMNS
WHERE TABLE_NAME = UPPER('&1')
AND CONSTRAINT_NAME LIKE 'PK%'
UNION
SELECT SUBSTR(CONSTRAINT_NAME,1,27) CONSTRAINT_NAME,
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SUBSTR(COLUMN_NAME,1,25) COL_NAME,
SUBSTR(POSITION,1,3) POSITION,
SUBSTR(OWNER,1,7) OWNER
FROM USER_CONS_COLUMNS
WHERE TABLE_NAME = UPPER('&2')
AND CONSTRAINT_NAME LIKE 'FK%'
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How shall we do validation for Unique Key and Multiple Primary Key?

Hi,
I have table created From EO in which one column is checked as Unique.
How to do validation for column checked as Unique.
I know how to do validation for column checked as primary key.
Below is sample code for primary key validation
if (getRvSize() != null)
throw new OAAttrValException(OAException.TYP_ENTITY_OBJECT,
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getPrimaryKey(), // EO PK
"RvSize", // Attribute Name
value, // Attribute value
"AK", // Message product short name
"FWK_TBX_T_EMP_ID_NO_UPDATE"); // Message name
if (value != null)
OADBTransaction transaction = getOADBTransaction();
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(xxczVAGCSRVSizingEOImpl)rvDefinition.findByPrimaryKey(transaction, new Key(rvKey));
if (rv != null)
throw new OAAttrValException(OAException.TYP_ENTITY_OBJECT,
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getPrimaryKey(), // EO PK
"RvSize", // Attribute Name
value, // Attribute value
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What changes need to be done for above code in order to do the validation for Unique Key.
I have one more Question
How shall we do the Validation for Multiple Primary Key in a table?
- Mithun

1. If you just validate on one attribute like your unique key, then put your logic in the set<Your AttributeName) method
2. If you want to do the cross validation ( like validating multiple attributes) then put your logic in the validateEntrity Method
How to do that?
1. Create a Validation View object.
2. Associate your VVO to the VAM
3. Create entity expert.
4. Have method in entity expert for your validation (you would be calling AM and then VO execute the query and do the validation.
5. You would be calling the Entity experty method from your EO either setMethods or validateEntity.
I have given just the high level points.
Hope this helps.
Thanks,
RK

Can the Primary Key also be Primary key in another table

Hi all,
I am working on a project. The project specification says:
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project ( proj_no , proj_date, proj_desc, proj_type, proj_status, s_no, cust_no)
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How can I have proj_no in the project table and in the purchase_order as primary keys?
If I create a composite key in the purchase_order table making the ( proj_no, po_no) as primary key. How can I make the project_no in the project table a primary key too?
Is there a solution for it?
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proj_no NUMBER(5) NOT NULL,
po_date date,
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Hi,
I think I'd set the project no in the projects table a primary key, and project no in the purchase orders table a foreign key constraint to the projects table, combined with a unique, not null constraint in the table.
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Partition key on non primary key column

I have scenario where the table has defined non primary key column as "partition key".
I was wondering how it will affect the purge/archive process if the index and table are using different column (they are not aligned)?
What should be the solution to this scenario?
Can I use the non primary key column as partition key? Is this affect purging/archiving or switching -IN or OUT partitions?
Here is the article which Im following but didn't get the precise answer:
"When the indexes and the table use the same partitioning function and columns in the same order, the table and index
are aligned."
https://msdn.microsoft.com/en-US/library/ms345146%28v=SQL.90%29.aspx?f=255&MSPPError=-2147217396#sql2k5parti_topic9
Look at "Index
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If it non aligned, you cannot do switching in or out. to switch, you should have aligned partitons.
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How I can do this update, when I have two records (one primary key, no seq)

How I can do this update in pl\sql
Here is the table with some data
CREATE TABLE INSERT_TE
PIDM        VARCHAR2(8),
FORM_ID     VARCHAR2(2),
TEACHER     VARCHAR2(30)
INSERT into INSERT_TE
PIDM,
FORM_ID,
TEACHER
SELECT
'1106651',
'TE',
'Teacher, Alber Howard'
from dualcommit;
INSERT into INSERT_TE
PIDM,
FORM_ID,
TEACHER
SELECT
'1106651',
'TE',
'Teacher, Alber2 '
from dualcommit;
INSERT into INSERT_TE
PIDM,
FORM_ID,
TEACHER
SELECT
'2321241',
'TE',
'Teacher, Silly Billy '
from dualcommit
You are going to ended with something like this: In a cursor..
PIDM     FORM_ID     TEACHER
1106651     TE     Teacher, Alber Howard
1106651     TE     Teacher, Alber2
2321241     TE     Teacher, Silly Billythen I need to update a table
if the there is only one record like this one 2321241 TE Teacher, Silly Billy
not problem I do this
UPDATE   saturn.sarchkl
         SET
         sarchkl_receive_date = SYSDATE,
         sarchkl_activity_date = SYSDATE,
         sarchkl_source = 'U',
         sarchkl_source_date = SYSDATE
         WHERE
          sarchkl_pidm = v_pidm3
          AND sarchkl_receive_date IS NULL
          AND sarchkl_term_code_entry = p_term
          AND sarchkl_admr_code = 'REC1'But if there is a PIDM (pk) with two records
PIDM FORM_ID TEACHER
1106651 TE Teacher, Alber Howard
1106651 TE Teacher, Alber2 I need to do 2 updates (notice the AND sarchkl_admr_code rec1 for the firs and rec2 for the second
The first record should update the table when the condition is sarchkl_admr_code = 'REC1' and the second record with the
condition is sarchkl_admr_code = 'REC2'
UPDATE   saturn.sarchkl
         SET
         sarchkl_receive_date = SYSDATE,
         sarchkl_activity_date = SYSDATE,
         sarchkl_source = 'U',
         sarchkl_source_date = SYSDATE
         WHERE
          sarchkl_pidm = v_pidm3
          AND sarchkl_receive_date IS NULL
          AND sarchkl_term_code_entry = p_term
          AND sarchkl_admr_code = 'REC1'and
UPDATE   saturn.sarchkl
         SET
         sarchkl_receive_date = SYSDATE,
         sarchkl_activity_date = SYSDATE,
         sarchkl_source = 'U',
         sarchkl_source_date = SYSDATE
         WHERE
          sarchkl_pidm = v_pidm3
          AND sarchkl_receive_date IS NULL
          AND sarchkl_term_code_entry = p_term
          AND sarchkl_admr_code = 'REC2'I am doing this in pl\sql, I don't have a sequence in the table INSERT_TE, how I know that the first record in
1106651 TE Teacher, Alber Howard
1106651 TE Teacher, Alber2 update a rec1 and the second updates when sarchkl_admr_code = 'REC2',
I guess I can create a sequence, but I am inserting a table from a select satement, I am getting the error
ORA-02287: sequence number not allowed here, when I try to do the following:
INSERT INTO SYTEACH
SYTEACH_PIDM,
SYTEACH_ID,
SYTEACH_TEACHER,
SYTEACH_SEQ
SELECT
      DISTINCT
      spriden_pidm,
      sarchkl_admr_code,
      szsform_form_id,
      szsform_schl_off_type||', '||szsform_schl_off_firstname||' '||szsform_schl_off_lasttname teacher,
       SZSFORM_SEQ.NEXTVAL
        FROM   saturn_midd.szsform, saturn.spriden, saturn.sarchkl
       WHERE       spriden_ntyp_code = 'CAPP'
               AND szsform_common_app_id = spriden_id
               AND spriden_pidm = sarchkl_pidm
               AND sarchkl_admr_code = 'REC1'
               AND szsform_form_id = 'TE'
What is the simple way of doing this update..

Hi,
you said:
>
But if there is a PIDM (pk) with two records
PIDM FORM_ID TEACHER
1106651 TE Teacher, Alber Howard
1106651 TE Teacher, Alber2
>
No! pks are unique! (otherwise we don't call them pk)
For your table you could define a unique like this:
PIDM column + a sequence. (new column):
ALTER TABLE INSERT_TE ADD(TEACH_SEQ NUMBER)
UPDATE INSERT_TE x
   SET TEACH_SEQ =
          (SELECT n
           FROM   (SELECT ROWID rid,
                          ROW_NUMBER() OVER(PARTITION BY pidm ORDER BY TEACHER) n
                   FROM   INSERT_TE t) s
           WHERE s.rid = x.ROWID)
PIDM     FORM_ID     TEACHER     TEACH_SEQ
1106651     TE     Teacher, Alber Howard      1
1106651     TE     Teacher, Alber2       2
2321241     TE     Teacher, Silly Billy      1I need to do 2 updates (notice the AND sarchkl_admr_code rec1 for the firs and rec2 for the second
The first record should update the table when the condition is sarchkl_admr_code = 'REC1' and the second record with the condition is sarchkl_admr_code = 'REC2'
>
normally no.
but you can (now) do
select PIDM, FORM_ID, TEACHER, 'REC'||TEACH_SEQ TEACH_SEQ from INSERT_TE
PIDM     FORM_ID     TEACHER     TEACH_SEQ
1106651     TE     Teacher, Alber Howard     REC1
1106651     TE     Teacher, Alber2      REC2
2321241     TE     Teacher, Silly Billy      REC1and use the last column for you update ...
Edited by: user11268895 on Aug 20, 2010 2:01 PM

Two foreign keys to one primary key

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