Re: Select and Sort?

2002-12-10 Thread Fred van Engen
On Tue, Dec 10, 2002 at 03:32:13PM +0500, Tariq Murtaza wrote:
 I want to achieve recordset like below (sorting category by Name and 
 including 'Others' at the end),
 I want to do that by single query ;), any idea???
 
 
 IDCategory
 
 6 biochemistry
 62Commerce
 95chemistry
 2 Engg
 87Ecommerce
 7 math
 45physics
 1 Software Engg   
 5 Others
 

Try something like this:

SELECT id, category from mytable order by concat(if(id=5,'B','A'),category);

Only problem is that it won't optimize, so use this on small tables only.


Regards,

Fred.

-- 
Fred van Engen  XB Networks B.V.
email: [EMAIL PROTECTED]Televisieweg 2
tel: +31 36 5462400 1322 AC  Almere
fax: +31 36 5462424 The Netherlands

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Re: Select and Sort?

2002-12-10 Thread Tariq Murtaza
Thanks for help.
here is another solution for that...

SELECT if (Category = 'others', '999', 0) as priority, ID, Category FROM 
TableName
ORDER BY priority, Category

Tariq

Fred van Engen wrote:
On Tue, Dec 10, 2002 at 03:32:13PM +0500, Tariq Murtaza wrote:


I want to achieve recordset like below (sorting category by Name and 
including 'Others' at the end),
I want to do that by single query ;), any idea???


ID	Category

6	biochemistry
62	Commerce
95	chemistry
2	Engg
87	Ecommerce
7	math
45	physics
1	Software Engg	
5	Others



Try something like this:

SELECT id, category from mytable order by concat(if(id=5,'B','A'),category);

Only problem is that it won't optimize, so use this on small tables only.


Regards,

Fred.






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Re: Select and Sort?

2002-12-10 Thread Fred van Engen
On Tue, Dec 10, 2002 at 04:12:22PM +0500, Tariq Murtaza wrote:
 Thanks for help.
 here is another solution for that...
 
 SELECT if (Category = 'others', '999', 0) as priority, ID, Category FROM 
 TableName
 ORDER BY priority, Category
 

That's right. It has the same problem regarding optimization and it
gives you another column in your result set (which you may or may not
want).

Regards,

Fred.


 Fred van Engen wrote:
 On Tue, Dec 10, 2002 at 03:32:13PM +0500, Tariq Murtaza wrote:
 
 I want to achieve recordset like below (sorting category by Name and 
 including 'Others' at the end),
 I want to do that by single query ;), any idea???
 
 
 ID  Category
 
 6   biochemistry
 62  Commerce
 95  chemistry
 2   Engg
 87  Ecommerce
 7   math
 45  physics
 1   Software Engg   
 5   Others
 
 
 
 Try something like this:
 
 SELECT id, category from mytable order by 
 concat(if(id=5,'B','A'),category);
 
 Only problem is that it won't optimize, so use this on small tables only.
 
 
 Regards,
 
 Fred.
 
 
 
 

-- 
Fred van Engen  XB Networks B.V.
email: [EMAIL PROTECTED]Televisieweg 2
tel: +31 36 5462400 1322 AC  Almere
fax: +31 36 5462424 The Netherlands

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RE: Select and Sort?

2002-12-10 Thread Adolfo Bello
SELECT ... WHERE Category  'others'
UNION
SELECT ... WHERE Category='others'

 -Original Message-
 From: Tariq Murtaza [mailto:[EMAIL PROTECTED]] 
 Sent: Tuesday, December 10, 2002 7:12 AM
 To: Fred van Engen
 Cc: [EMAIL PROTECTED]
 Subject: Re: Select and Sort?
 
 
 Thanks for help.
 here is another solution for that...
 
 SELECT if (Category = 'others', '999', 0) as priority, ID, 
 Category FROM 
 TableName
 ORDER BY priority, Category
 
 Tariq
 
 Fred van Engen wrote:
  On Tue, Dec 10, 2002 at 03:32:13PM +0500, Tariq Murtaza wrote:
  
 I want to achieve recordset like below (sorting category by Name and
 including 'Others' at the end),
 I want to do that by single query ;), any idea???
 
 
 ID  Category
 
 6   biochemistry
 62  Commerce
 95  chemistry
 2   Engg
 87  Ecommerce
 7   math
 45  physics
 1   Software Engg   
 5   Others
 
  
  
  Try something like this:
  
  SELECT id, category from mytable order by 
  concat(if(id=5,'B','A'),category);
  
  Only problem is that it won't optimize, so use this on small tables 
  only.
  
  
  Regards,
  
  Fred.
  
 
 
 
 
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 [EMAIL PROTECTED]
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