without using foreign key

Similar Questions

• subquery in the IF statement in the trigger, without using foreign keys

  Hello
  
  I'm studying ways to write a subquery in an IF statement, which is placed inside a trigger.
  I want to write sth like IF (: new.jazz not in (select goldies from T which...)) etc. I don't know if the fact that the IF is in a trigger adds a few additional restrictions. (Does?)
  
  So far, I've found the solution described here: comparison of subquery in the If statement , which I think is a little cheesy, I could have the "cooleststarinthegalaxy" instead of 1 and seems you need to do extra light, but always very lifting.
  
  I also read on the possibility to use MERGE, what I'm currently doing research.
  
  Is there another way?
  
  Thank you
  
  Published by: BluShadow on November 14, 2012 13:37
  fixed link
  
  Edits by me: the question is how (if possible) to do this without a foreign key.
  
  Published by: questioningq12 on November 14, 2012 06:11
  
  Published by: questioningq12 on November 14, 2012 06:13

  questioningq12 wrote:
  Still does not address the problem of writing, a subquery in a case within a trigger, which is what was the original question.

  OK, simple answer... you can not write a subquery in a State of the IF statement, it is not part of the syntax of PL/SQL.

• multiple selection in listbox without using the ctrl key

  Hello

  I wanted to know if it is possible to select multiple items in a listbox without using ctrl or SHIFT key. I write code for a touch screen application and you want to activate the user select more than one entry in a listbox control.

  I saw a similar post that had a solution for a tree control. Is it possible to do the same thing for a listbox control too?

  Pavitra-

  I saved to the audit zip file previous version

• Can I remove Logical columns that I will not use in the layer of presentation as the id or foreign key columns?

  Hello

  Can I remove Logical columns at the level of the business layer that I'm not going to use the layer of presentation as the ID or foreign key columns? It will not affect the relations to the business layer?

  Kind regards

  Nestor

  Hi Nestor,.

  It won't unless they are used as keys, columns sort order, the ID column or the likes. But you can leave them in the MDB layer and expose just in the presentation layer - just in case you need it later. It is not use all the resources or generate overhead. More: Developer of the RPD should be used to work with loads of columns

• by selecting each of the nth order key without using a rank value

  Hello

  Suppose we have a table of Orders

  create table orders)

  order_no number primary key,

  customer_id number,

  item_id number);

  insert into orders)

  Select 101, 601, 90 of all the double union

  Select 103, 602, 100 of all the double union

  Select 603, 105, 110 Union double all the

  Select 107, 604, 120 Union double all the

  Select double union all 108, 605, 130

  Select double union all 109, 606, 140

  Select 110, 607, 150 Union double all the

  Select 111, 608, 160 Union double all the

  Select 112, 609, 170 Union double all the

  Select 114, 610, 180 doubles);

  How can we take every third order_no controlled key order_no without use of rank and connect function using sql.

  as

  105,

  109,

  112

  can someone please help?

  Thank you

  Max

  How can we choose each third order_no order_no keys without the use of grade -controlled

  Reason is?

  Anyway, using ROWNUM then:

  SQL > select order_no

  2 starting at)

  3. Select order_no, rownum rn

  4 of)

  5. Select order_no

  6 orders

  7 order of order_no

  8    )

  9)

  10 where mod (rn, 3) = 0;

  ORDER_NO

  ----------

  105

  109

  112

• How to check where the table field has been used as a foreign key in the database

  Hi I have a field in my table Office I had office_code field, this field has been used in the tables of diffirent as foreign key is a sql I can wirte to see all the tables that have used this field as a foreign key
  
  Edited by: adf009 09/05/2013 10:37
  
  Edited by: adf009 09/05/2013 10:38

  Check this box

  SELECT * FROM user_constraints WHERE table_name='EMP' and CONSTRAINT_TYPE='R';
  

  Type = 'R' means referential integrity constraint type.

• Drop partition without disabling the foreign key

  Hi all
  
  I have a table parent and child.
  
  Parent table
  
  create the table parent_1
  (identification number,
  create_date date,
  Constraint parent_1_pk001 PRIMARY KEY (id))
  PARTITION OF RANGE (create_date)
  INTERVAL (NUMTODSINTERVAL(1,'DAY'))
  (PARTITION parent_1_part VALUES LESS THAN (January 1, 2010 '));
  
  Child table
  create the table child_1
  (identification number,
  create_date date,
  Constraint child_1_fk001 FOREIGN KEY (id)
  REFERENCES parent_1 (id))
  PARTITION OF RANGE (create_date)
  INTERVAL (NUMTODSINTERVAL(1,'DAY'))
  (PARTITION create_date_part VALUES LESS THAN (January 1, 2010 '));
  
  
  I have problems to delete partition.
  Parent_1
  1 JULY 26, 12
  2 JULY 26, 12
  
  Child_1
  1 JULY 26, 12
  
  ALTER drop partition table CHILD_1 SYS_P274;
  table altered CHILD_1.
  
  ON THE PARENT PARTITION A FALL
  ALTER drop partition table parent_1 SYS_P273;
  
  Error report:
  SQL error: ORA-02266: unique/primary keys in table referenced by foreign keys enabled
  02266 00000 - "unique/primary keys in table referenced by foreign keys enabled.
  * Cause: An attempt was made to truncate a single table or
  primary keys referenced by foreign keys in another table.
  Other unauthorized trades are a drop/truncate partition a
  partitioned table or an ALTER TABLE EXCHANGE PARTITION.
  * Action: Before performing the operations described above, the table, disable the
  constraints foreign key in other tables. You can see what
  constraints are making reference to a table by issuing the following
  command:
  SELECT * FROM USER_CONSTRAINTS WHERE TABLE_NAME = 'tabnam ';
  
  
  PLEASE KNOW IF THERE IS A WAY TO THE PARENT PARTITION DROP WITHOUT TOGGLE FOREIGN CONSTRAINTS
  
  
  Thank you

  SQL Error: ORA-02266: unique/primary keys in table referenced by enabled foreign keys
  02266. 00000 - "unique/primary keys in table referenced by enabled foreign keys"
  *Cause: An attempt was made to truncate a table with unique or
  primary keys referenced by foreign keys enabled in another table.
  Other operations not allowed are dropping/truncating a partition of a
  partitioned table or an ALTER TABLE EXCHANGE PARTITION.
  *Action: Before performing the above operations the table, disable the
  foreign key constraints in other tables. 
  

  You can do until you disable the foreign key constraint

  http://jonathanlewis.WordPress.com/2006/12/10/drop-parent-partition/

  Hope this helps

  Mohamed Houri
  www.hourim.WordPress.com

• Foreign keys without ON DELETE CASCADE; Database design question

  It's the 3rd company, while I work, where I see that created foreign keys

  ON DELETE CASCADE

  clause.
  My colleague said that it is created without the ON DELETE CASCADE clause in order to complicate the deletion of data (records of children). Thus, for codes of the Purge and archive, before we delete the parent table we must remove from the child table first.
  
  Occasinaly, something is wrong and we will end up disabling FKs make them all and then purging, archiving, etc...
  
  So, is it not better to create foreign keys with the clause ON DELETE CASCADE, rather than having all these hassles?
  
  Experience, no matter what you think?

  Personally, I am firmly in the removal of the brand of hard data camp. In the vast majority of cases, trying to remove an active parent is an error if the user must be informed of what they are trying to do and must make a conscious effort to do so (in other words, remove first the children).

  John

• Extracting data from table without refreshment and without using the tab key.

  Hi friends,
  
  I have a problem I want to extract data from table without discount in the text field without using the Tab key. When I enter a field value any value then the text corressponding should enter into corressponding textfield without using the Tab key.
  
  for example. When I get back emp_id 101 in a text field then first_name and last_name, address would come in to the text fields corressponding without refresh and use the Tab key.
  
  How can I do that.
  
  Thank you
  Maury

  Hi Maury,

  I guess it's similar to: retrieving data without refreshing rather than Re: value of a textfield should enter into an another textfield without using the TAB ?

  If so, the only change you want to bring on the first is to use the parameter "Onkeyup" instead of "onchange" in the 'HTML Form attributes of the element' element.

  Note, however, that the user must move away from the issue at some point (for example, to click on a button), so the onchange will fire anyway.

  Andy

• Problems with Vista after disconnecting external USB key without using 'remove hardware safely '.

  A week ago, I unplugged my external Seagate USB drive without using a 'Remove hardware safely' first of my Vista pc.  Since reconnecting the drive, I had a series of problems.  The drive itself seems to be ok.   I am able to read and write to files on the disk.  I'm not able to do is the following:

  (1) open disk management.  It hangs on "Connecting to Virtual Disk Service".

  (2) stopping or starting without windows to snap or take an extra long time to stop or start.

  (3) failed to start Google Picasa3 or Adoble Photoshop Elements 7.  They both hang him.  I am able to use other programs such as Microsoft Office, Outlook, Miro, Norton Antivirus.

  Points 1 and 2 above work fine if the drive is not connected.  I plugged the drive into another computer (Windows 7) and ran Seagate disk checking utility.  He came clean back (no bad sectors) so that the drive is NOT corrupted.  (Check of the Seagate utility disk hung on my pc Vista.)   It seems that something related to the disk under Vista service is corrupted.

  I also see "driver has detected an error in the controller on \Device\Harddisk2\DR2." event message for different devices.  I also tried a restore to a point just before that the problem occurred.

  I don't want to reinstall Vista therefore looking for a solution.  Thank you.

  Janis

  Hello

  You can see the two links below, try the given suggestion and check if this helps you solve the problem.

  http://social.technet.Microsoft.com/forums/en/windowsserver2008r2management/thread/8b5d2c5b-C212-4E3F-96e3-91e668d3b178

  http://social.answers.Microsoft.com/forums/en-us/w7hardware/thread/b2b29ed8-f620-4FE1-93b5-8ced0d472aeb

  Hope this information is useful.

  Amrita M

  Microsoft Answers Support Engineer
  Visit our Microsoft answers feedback Forum and let us know what you think.

• Can we create a foreign key by using built in functions?

  Hi all

  I'm in the need to create a foreign key referring to an expression of a column in another table.

  For example, I try below and I got some errors.

  CREATE TABLE TABLE_A

  (

  student_id VARCHAR2 (30),

  student_name VARCHAR2 (100),

  CONSTRAINT fk_A FOREIGN KEY (student_id) REFERENCES TABLE_B (UPPER (column_name))

  );

  Please suggest if it is possible that a foreign key could be made in an expression or not?

  2761969 wrote:

  Hi all

  I'm in the need to create a foreign key referring to an expression of a column in another table.

  For example, I try below and I got some errors.

  CREATE TABLE TABLE_A

  (

  student_id VARCHAR2 (30),

  student_name VARCHAR2 (100),

  CONSTRAINT fk_A FOREIGN KEY (student_id) REFERENCES TABLE_B (UPPER (column_name))

  );

  Please suggest if it is possible that a foreign key could be made in an expression or not?

  No - it isn't.

  You can, however, create a VIRTUAL column in the parent table, and then create a foreign key that references.

• How to find child every column foreign keys of tables without index {worm 10 g}

  Hi Experts,

  I have need of a query to find child all the foreign keys of table columns, which are not having an index on the foreign key column.

  Try this.

  SELECT T1. OWNER,

  T1. CONSTRAINT_NAME,

  T1. TABLE_NAME,

  T2. COLUMN_NAME,

  T1. CONSTRAINT_TYPE

  OF ALL_CONSTRAINTS T1,.

  ALL_CONS_COLUMNS T2

  WHERE T1. CONSTRAINT_NAME = T2. CONSTRAINT_NAME

  AND T1. TABLE_NAME = T2. TABLE-NAME

  AND T1. OWNER = T2. OWNER

  AND T1. CONSTRAINT_TYPE = 'R '.

  AND T2. COLUMN_NAME NOT IN (SELECT COLUMN_NAME FROM ALL_IND_COLUMNS T WHERE TABLE_NAME = T1.) TABLE_NAME AND COLUMN_NAME = T2. COLUMN_NAME);

  Post edited by: Parth272025

• Foreign key, check force

  Hello

  This is the structure of two two table.

  

  DDL:

  CREATE TABLE TEST_PARENT
    (
      PARENT_KEY NUMBER (22),
      PARENT_ID NUMBER (22),
      PARENT_NAME VARCHAR2 (255 CHAR),
      EFFECTIVE_START_DATE DATE DEFAULT sysdate NOT NULL ,
      EFFECTIVE_END_DATE   DATE
    ) ;
  ALTER TABLE TEST_PARENT ADD CONSTRAINT PK_TEST_PARENT PRIMARY KEY ( PARENT_KEY ) ;
  
  
  CREATE TABLE TEST_CHANNEL
    (
  
  
      CHANNEL_KEY NUMBER (22),
      CHANNEL_ID NUMBER (22),
      CHANNEL_NAME VARCHAR2 (255 CHAR),
      EFFECTIVE_START_DATE DATE DEFAULT sysdate NOT NULL ,
      EFFECTIVE_END_DATE   DATE 
    ) ;
  ALTER TABLE TEST_CHANNEL ADD CONSTRAINT PK_TEST_CHANNEL PRIMARY KEY ( CHANNEL_KEY ) ;
  

  Logic:

  Parent_id is always fixed to a Parent. But a Parent can have different attributes (parent_name here). Where the attributes are changing it will end the bu previous records put a value to effective_end_date and it will create a new line. New line will have the PARENT_KEY new PARENT_NAME with new effective_start_date and null in effective_end_date.

  Same logic applies to the CHILD table as well.

  What is the best way to put a reference to the type of the foreign key in the CHILD table that in case, will ensure that a child cannot exist without a parent now. I can't take PARENT_KEY as a foreign key to the same parent can change the PARENT_KEY and a child must always point to the parent ASSET (EFFECTIVE_END_DATE as null) folder.

  Thanks in advance.

  I would enrich your datamodel by tables of the object/version as:

  CREATE TABLE TEST_PARENT_OT
  (
  NUMBER OF PARENT_KEY (22) NOT NULL
  ) ;

  ALTER TABLE TEST_PARENT_OT ADD CONSTRAINT PK_TEST_PARENT_OT PRIMARY KEY (PARENT_KEY);

  CREATE TABLE TEST_PARENT_VT
  (
  NUMBER OF PARENT_KEY (22) NOT NULL,
  NUMBER of VERSION_ID (22) not null,
  PARENT_NAME VARCHAR2 (255 CHAR),
  EFFECTIVE_START_DATE DATE default sysdate NOT NULL,
  DATE OF EFFECTIVE_END_DATE
  ) ;

  ALTER TABLE TEST_PARENT_VT ADD CONSTRAINT PK_TEST_PARENT_VT PRIMARY KEY (PARENT_KEY, VERSION_ID);
  ALTER TABLE TEST_PARENT_VT add CONSTRAINT FK_PARENT_VT_PARENT_OT foreign key (parent_key) refers to test_parent_ot (parent_key);

  CREATE TABLE TEST_CHANNEL_OT
  (
  NUMBER OF CHANNEL_KEY (22) NOT NULL
  ) ;

  ALTER TABLE TEST_CHANNEL_OT ADD CONSTRAINT PK_TEST_CHANNEL_OT PRIMARY KEY (CHANNEL_KEY);

  CREATE TABLE TEST_CHANNEL_VT
  (
  NUMBER OF CHANNEL_KEY (22) NOT NULL,
  NUMBER OF VERSION_ID (22) NOT NULL,
  PARENT_KEY NUMBER (22) NOT NULL,
  CHANNEL_NAME VARCHAR2 (255 CHAR),
  EFFECTIVE_START_DATE DATE default sysdate NOT NULL,
  DATE OF EFFECTIVE_END_DATE
  ) ;

  ALTER TABLE TEST_CHANNEL_VT ADD CONSTRAINT PK_TEST_CHANNEL_VT PRIMARY KEY (CHANNEL_KEY, VERSION_ID);
  ALTER TABLE TEST_CHANNEL_VT add CONSTRAINT FK_CHANNEL_VT_CHANNEL_OT FOREIGN KEY (channel_key) REFERENCES TEST_CHANNEL_OT (channel_key);
  ALTER TABLE TEST_CHANNEL_VT add CONSTRAINT FK_CHANNEL_VT_PARENT_OT FOREIGN KEY (PARENT_key) REFERENCES test_parent_ot (parrent_key);

  Using this you will not have to reallocate your child of the lines when a new version of parent is created and you will be able to have the independent channel versions of the parent versions (so no need to change all the children when the parents ends).

  the construction of views of parents and the channels which only show active lines.

  The problem you may have is to be sure to have for each point in time an active version and so I would not implement of an effective_end date, but inherit the effective end of the effective next to (which is a little more work but you will help gapelessness if necessary)

  HTH

• creating tables with references to foreign keys that are not created tables

  I have several patterns to create and each diagram has several tables that reference the columns in each other as a foreign key. So I have to sort out them in the order. In other words, if table A has the foreign key of the Table B column can create B first and then A. are there - it was none I can create a first and then B, that would save a lot of time.

  Hello

  ORA - aff wrote:

  I have several patterns to create and each diagram has several tables that reference the columns in each other as a foreign key. So I have to sort out them in the order. In other words, if table A has the foreign key of the Table B column can create B first and then A. are there - it was none I can create a first and then B, that would save a lot of time.

  You can create A without the constraints of foreign key and then, once the B array has been created, use ALTER TABLE to add the constraints of foreigners has.

• Optimize the foreign key for the removal of the cascade constraint.

  Hello

  JDeveloper version: 11.1.2.3.0

  I saw this blog and found something new to me: http://snag.gy/qI6dY.jpg

  Jdeveloper user interface, there is an option to select all tables to select the foreign key and set it for the removal of the waterfall.

  My project is deployed on multiple databases. I wonder where this change is registered. None of the project files is modified.

  Can I make this change (from limitations to the waterfall) for each database that I use?

  Here is the blog where I saw that: http://tompeez.wordpress.com/2013/04/22/master-detail-insertdelete-sample/

  I have my object associations optimized for the removal of the waterfall, but without the option above together, I always get constraint violations...

  Concerning

  Not sure however if you set the option the DOF looks like

  	"EMP_JOB_FK' FOREIGN KEY ('JOB_ID') CONSTRAINT
  	REFERENCES 'HR '. "" SELECT JOBS "("JOB_ID') WE DELETE CASCADE

  If you set the option to cascade for fk Job_id from the employees table.

  Timo