Brian Tkatch wrote:
> On Thu, 08 Nov 2007 10:04:07 -0800, DA Morgan <damorgan_at_psoug.org>
> wrote:
>
>> Brian Tkatch wrote:
>>> On Thu, 08 Nov 2007 07:46:08 -0800, Nick
>>> <nachiket.shirwalkar_at_gmail.com> wrote:
>>>
>>>> I have have 3 tables TableA, TableB and TableC. TableA holds the keys
>>>> to TableB and TableC. I need a query which will display the details
>>> >from TableB and TableC depending on the key in TableA.
>>>> For eg.
>>>>
>>>>
>>>> TableA - columns {id, relatedkey, recordType} ===recordType will hold
>>>> values like TableB or TableC
>>>> TableB - columns{id, column1}
>>>> TableC - columns{id, column1}
>>>>
>>>>
>>>> the query should match the related key to the id of TableA or table B
>>>> based on recordType and show the column1 value with the TabelA id so
>>>> output for this should be
>>>>
>>>>
>>>> id recordType column1
>>>>
>>>>
>>>> 1 TableB value of TableB column1
>>>> 2 TableC value of TableC column1
>>>>
>>>>
>>>> Please help.
>>>>
>>>>
>>>> Cheers
>>>> Nick
>>>
>>> If it is only one value, a subquery can pull the appropriate value. A
>>> CASE statement based on recordType could specify the two separate
>>> SELECT sub-queries, and execute the appropriate one.
>>>
>>> B.
>> This is school work cross-posted to multiple usenet groups. Please don't
>> provide the answer. Thanks.
>
> I assumed it wasn't school work, as the schema is rather ill-defined,
> and seemed not like what a textbook would include.
>
> B.
A business app with objects named TableA, TableB, and TableC?
Columns named ID and column1 ... and ID is a reserved word in Oracle?
Not a chance. This is schoolwork.
--
Daniel A. Morgan
University of Washington
damorgan_at_x.washington.edu (replace x with u to respond)
Puget Sound Oracle Users Group
www.psoug.org
Received on Thu Nov 08 2007 - 15:14:05 CST
