vertical serches on a table - how to

2003-10-01 Thread Susan Tay
Hi,
I have a table that I would like to perform a vertical search on. For eg.
Table X
---
IDCOL1 COL2
1 apple orange
1 mango   banana
1 grape pineapple
2 mango   banana
2 guava lemon
I would like to display records that meet the following criteria for *a 
particular ID*.

(COL1=banana)
  OR
(COL1=mango and COL2=banana
AND
COL1=grape and COL2=pineapple
The output should be
ID   COL1COL2
1mango   banana
1grapepineapple
It should not display
ID   COL1COL2
2mango   banana
since ID=2 did not meet the criteria where COL1=grape and COL2=pineapple.

I tried the following SQL but the output is always zero because COL1 can 
never be a mango and a grape and COL2 can never be a
banana and a pineapple at the same time for a particular ID.

select ID, col1, col2
from   tableX
where  (col1='banana')
or ((col1='mango' and col2='banana')
and
   (col1='grape' and col2='pineapple')
   );
Any idea how I can do a vertical search on the table.

Thanks for any help you can provide.

susan

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RE: vertical serches on a table - how to

2003-10-01 Thread Susan Tay
Stephane,
Apologize for not being clear on my question.
The query you have provided will only return one record, ie.
1 mango  banana.
I need two records to be returned:
1  mangobanana
1  grape pineapple
You're right that by 'vertical', I meant filtering according to conditions 
on OTHER rows but at the same time, I want those filter conditions to be 
displayed as well, which in this case - grape and pineapple.

Any idea.

Thanks.

susan


From: Stephane Faroult [EMAIL PROTECTED]
Reply-To: [EMAIL PROTECTED]
To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED]
Subject: RE: vertical serches on a table - how to
Date: Wed, 01 Oct 2003 06:14:32 -0800
Hi,
I have a table that I would like to perform a
vertical search on. For eg.

Table X
---
ID COL1 COL2
1  apple orange
1  mango   banana
1  grape pineapple
2  mango   banana
2  guava lemon


I would like to display records that meet the
following criteria for *a
particular ID*.

(COL1=banana)
OR
(COL1=mango and COL2=banana
AND
COL1=grape and COL2=pineapple


The output should be
ID   COL1COL2
1mango   banana
1grapepineapple

It should not display
ID   COL1COL2
2mango   banana

since ID=2 did not meet the criteria where
COL1=grape and COL2=pineapple.


I tried the following SQL but the output is always
zero because COL1 can
never be a mango and a grape and COL2 can never be
a
banana and a pineapple at the same time for a
particular ID.

select ID, col1, col2
fromtableX
where   (col1='banana')
or  ((col1='mango' and col2='banana')
  and
 (col1='grape' and col2='pineapple')
 );


Any idea how I can do a vertical search on the
table.

Thanks for any help you can provide.

susan

Susan,

   Took me some time to understand what you meant by 'vertical search'. 
ANDs and ORs in a WHERE clause always apply to the current row under 
scrutiny. What you mean by 'vertical' is that you want to filter according 
to conditions on OTHER rows. This is done by a subquery.

Your query could read

select X1.ID, X1.col1, X1.col2
fromtableX X1
where   (X1.col1='banana')
or  ((X1.col1='mango' and X1.col2='banana')
  and EXISTS (select null
  from tableX X2
  where X2.col1='grape'
and X2.col2='pineapple'
and X2.ID = X1.ID));
Simplifying to the extreme, each different row you handle must be returned 
by its 'own' query.

Regards,

Stephane Faroult
Oriole
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Author: Susan Tay
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RE: RE: vertical serches on a table - how to

2003-10-01 Thread Susan Tay
Stephane,
Fantastic! Appreciate the help.
Thanks!

susan


From: Stephane Faroult [EMAIL PROTECTED]
Reply-To: [EMAIL PROTECTED]
To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED]
Subject: RE: RE: vertical serches on a table - how to
Date: Wed, 01 Oct 2003 08:04:31 -0800
Stephane,
Apologize for not being clear on my question.

The query you have provided will only return one
record, ie.
1 mango  banana.

I need two records to be returned:
1  mangobanana
1  grape pineapple

You're right that by 'vertical', I meant filtering
according to conditions
on OTHER rows but at the same time, I want those
filter conditions to be
displayed as well, which in this case - grape and
pineapple.

Any idea.

Thanks.

susan

In that case you keep something looking vaguely like the condition in your 
initial query but add a subquery to check that both conditions are 
satisfied :

select X1.ID, X1.col1, X1.col2
from tableX X1
where  (X1.col1='banana')
or (((X1.col1='mango' and X1.col2='banana')
or (X1.col1='grape' and X1.col2='pineapple'))
   and 2 = (select count(*)
from tableX X2
where ((X2.col1='mango'
   and X2.col2='banana')
   or (X2.col1='grape'
   and X2.col2='pineapple'))
   and X2.ID = X1.ID)));
 No guarantee on the proper number of parentheses.

SF


 Hi,
 I have a table that I would like to perform a
 vertical search on. For eg.
 
 Table X
 ---
 ID COL1 COL2
 1  apple orange
 1  mango   banana
 1  grape pineapple
 2  mango   banana
 2  guava lemon
 
 
 I would like to display records that meet the
 following criteria for *a
 particular ID*.
 
 (COL1=banana)
 OR
 (COL1=mango and COL2=banana
 AND
 COL1=grape and COL2=pineapple
 
 
 The output should be
 ID  COL1COL2
 1   mango   banana
 1   grapepineapple
 
 It should not display
 ID  COL1COL2
 2   mango   banana
 
 since ID=2 did not meet the criteria where
 COL1=grape and COL2=pineapple.
 
 
 I tried the following SQL but the output is
always
 zero because COL1 can
 never be a mango and a grape and COL2 can never
be
 a
 banana and a pineapple at the same time for a
 particular ID.
 
 select ID, col1, col2
 from tableX
 where   (col1='banana')
 or  ((col1='mango' and col2='banana')
   and
  (col1='grape' and col2='pineapple')
  );
 
 
 Any idea how I can do a vertical search on the
 table.
 
 Thanks for any help you can provide.
 
 susan
 

Susan,

Took me some time to understand what you meant
by 'vertical search'.
ANDs and ORs in a WHERE clause always apply to the
current row under
scrutiny. What you mean by 'vertical' is that you
want to filter according
to conditions on OTHER rows. This is done by a
subquery.

Your query could read

select X1.ID, X1.col1, X1.col2
from tableX X1
where  (X1.col1='banana')
or   ((X1.col1='mango' and X1.col2='banana')
   and EXISTS (select null
 from tableX X2
 where X2.col1='grape'
   and X2.col2='pineapple'
   and X2.ID = X1.ID));

Simplifying to the extreme, each different row you
handle must be returned
by its 'own' query.

Regards,

Stephane Faroult
Oriole
--
Please see the official ORACLE-L FAQ: http://www.orafaq.net
--
Author: Stephane Faroult
  INET: [EMAIL PROTECTED]
Fat City Network Services-- 858-538-5051 http://www.fatcity.com
San Diego, California-- Mailing list and web hosting services
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also send the HELP command for other information (like subscribing).
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(depending on the local service providers in your area).  
https://broadband.msn.com

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--
Author: Susan Tay
 INET: [EMAIL PROTECTED]
Fat City Network Services-- 858-538-5051 http://www.fatcity.com
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To REMOVE yourself from this mailing list, send an E-Mail message
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