General Query to identify parent columns and child columns in a table

Does anyone know a general query that can be run to identify the child records associated with the parent column within a single table.....and between other tables?
Am I correct in assuming the parent column is the 'primary key'?
Thanks.....I'm a new to oracle...and need some help understanding
my company's crazy DB structure

You can use
User_Constraints
User_Cons_Columns
views to identify parent and child table columns
SELECT * FROM User_Constraints WHERE Constraint_Type = 'R' AND Table_Name = '<TABLENAME>';
SELECT * FROM User_Cons_columns WHERE Constraint_Name = '<Name from Above query>';
will give you columns of the parent table (if you use value from constraint_name) and of child table (if you use value from r_constraint_name).
HTH..

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Can anyone help me in writing a procedure/dynamic SQL to fetch the column where the junk values appears and its value. Eg: If emp table contains ID and Name columns, and ID column contains junk values, the result should be the Id column and the junk value/s. It should be dynamic because next time if the other column contains junk values(like $,%...), the query should display the other column too..
Thanks in advance..

Try this, I'm not sure if it'll help... and get some idea...
try to modify it as per your requirement -
select * from junk_vals;
1     ranit1
2#     ranit2
3     ranit3
4$     ranit@4
5     ranit5
6     r^anit6
select 'ID', id, val from junk_vals
    where regexp_like(id,'[^a-zA-Z0-9]')
UNION
select 'VALUE', id, val from junk_vals
    where regexp_like(val,'[^a-zA-Z0-9]');
-- "Output :"
ID     2#     ranit2
ID     4$     ranit@4
VALUE     4$     ranit@4
VALUE     6     r^anit6
NOTE - I've considered anything other than Alphabets and Numbers as a Junk Value
Edited by: ranit B on Jan 4, 2013 5:07 PM
-- o/p added

I want to know the difference between Days column and Day1 Column

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I used this query:
SELECT to_char(return_date_time,'dd/mon/yyyy hh24:mi:ss') Test,
DECODE ('I', 'I', DECODE (1, NULL, NULL, 0, NULL, SYSDATE + 1)) Days,
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Day1
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Pleiadian wrote:
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Thanks

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SQL> ed
Wrote file afiedt.buf
1 with t as (select to_date('01/07/2007','DD/MM/YYYY') as start_dt, '3' as duration_days from dual)
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You want to use one single SQL statement to delete the child records in a table and the corresponding master records in the master table??
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I am working on a simple project to demonstrate how to load and extract XML using SQL, I have already made a table that contains a column of XMLTYPE and loaded an XML file into it (code below)
create or replace directory XMLSRC as 'C:\XMLSRC';
drop table Inventory;
create table Inventory(Inv XMLTYPE);
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The table that needs to be loaded is as follows:
create table InventoryOut(PartNumber Number(10), QTY Number(10), WhLocation varchar2(500));
The XML document is as follows:
<?xml version="1.0" encoding="UTF-8"?>
<dataroot xmlns:od="urn:schemas-microsoft-com:officedata" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="Inventory.xsd" generated="2012-04-09T17:36:30">
<Inventory>
<PartNumber>101</PartNumber>
<QTY>12</QTY>
<WhLocation>WA</WhLocation>
</Inventory>
</dataroot>
Thank you for any help you can offer.

First of all, thank you for your help!! Still stunned that you actually took the time to write out an eample using my tables/names/etc. Thank you!!
Attached is the code, there seems to be an issue with referencing the other table, Inventory.Inv, I checked and that table and the Inv column are showing up in the database so I am not sure why it is having issues locating them, take a look at the code I wrote as well as the output (*I included the real version number for you this time :)
EDIT: In your code right here:
select xt.*
3 from Inventory inve,
4 XMLTable('/dataroot/Inventory'
5 PASSING inve.Inv
I think is where I am messing it up, perhaps not understanding fully what is going on, as you write "Inventory inve" and "inve.Inv" ---- Is inve a keyword that I am just not familiar with? I think this is where the issues lies in my code.
END EDIT
EDIT2: Well that looks like it was it, changed that to how you have it and it now works!!! Could you please explain what that few lines is doing, and what the xt.* and inve are doing? Thanks again!!!
END EDIT2
drop table InventoryOut;
create table InventoryOut (PartNumber number(10), QTY number(10), WhLocation varchar2(500));
insert into InventoryOut (PartNumber, QTY, WhLocation)
select xt.*
from Inventory Inv,
XMLTable('/dataroot/Inventory'
PASSING Inventory.Inv COLUMNS
PartNumber number path 'PartNumber',
QTY number path 'QTY',
WhLocation path 'WhLocation')xt;
select * from InventoryOut;
select * from v$version;
table INVENTORYOUT dropped.
table INVENTORYOUT created.
Error starting at line 4 in command:
insert into InventoryOut (PartNumber, QTY, WhLocation)
select xt.*
from Inventory Inv,
XMLTable('/dataroot/Inventory'
PASSING Inventory.Inv COLUMNS
PartNumber number path 'PartNumber',
QTY number path 'QTY',
WhLocation path 'WhLocation')xt
Error at Command Line:8 Column:12
Error report:
SQL Error: ORA-00904: "INVENTORY"."INV": invalid identifier
00904. 00000 - "%s: invalid identifier"
*Cause:
*Action:
PARTNUMBER QTY WHLOCATION
BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
PL/SQL Release 11.2.0.1.0 - Production
CORE 11.2.0.1.0 Production
TNS for 32-bit Windows: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production
If this helps here is the code and output for the creation of the Inventory table itself:
create or replace directory XMLSRC as 'C:\XMLSRC';
drop table Inventory;
create table Inventory(Inv XMLTYPE);
INSERT INTO Inventory VALUES (XMLTYPE(bfilename('XMLSRC', 'Inventory.xml'),nls_charset_id('AL32UTF')));
select * from Inventory;
directory XMLSRC created.
table INVENTORY dropped.
table INVENTORY created.
1 rows inserted.
INV
<?xml version="1.0" encoding="WINDOWS-1252"?>
<dataroot xmlns:od="urn:schemas-microsoft-com:officedata" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="Inventory.xsd" generated="2012-04-09T17:36:30">
<Inventory>
<PartNumber>101</PartNumber>
<QTY>12</QTY>
<WhLocation>WA</WhLocation>
</Inventory>
</dataroot>
Thanks again for your help so far! Hope we can get this working :)
Edited by: 926502 on Apr 11, 2012 2:47 PM
Edited by: 926502 on Apr 11, 2012 2:49 PM
Edited by: 926502 on Apr 11, 2012 2:54 PM
Edited by: 926502 on Apr 11, 2012 2:54 PM
Updated issue to solved - Edited by: 926502 on Apr 11, 2012 2:55 PM

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SQL> with t_data
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select 'harry', 'bert', '1' from dual union all
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select 'sam', 'knight', '1' from dual union all
select 'tom', 'sand', '1' from dual union all
select 'cat', 'mud', '1' from dual
SELECT
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        area
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                FROM
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WHERE
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AND rn1 =1 ;
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I want to enter some data to specified column and row in a already created table. Please let me know how to do this.
Regards
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Attachments:
ChangeTableEntries.vi ‏41 KB

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Hello Gurus,
I am new to OBIEE and i have a requirement to verify the column format and data format for all of the existing column while generating a analysis report. Is there any way i can list down all of the columns which are exposed and list there column format and data format?
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hi,
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General Query to identify parent columns and child columns in a table

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