Hi Abhishek,
In a table i have 100s of rows with six categories like A,B,C,D,E,F
which is
marked with a column like
Table
ID Category
1 A
2 A
3 B
4 B
5 B
6 C
7 C
and so on 100 ids for each of six categories , i want to delete all
but 10
ids of each category, i wanted to know how to d
Not sure how to do it in a single query, but if you run this query repeatedly,
eventually you'll have only 10 left of each category.
DELETE tableName
FROM tableName, (SELECT MAX(ID) deleteID,count(ID) categCount FROM tableName GROUP BY Category HAVING categCount>10) AS Smry WHERE
tableName.ID=S
VenuGopal Papasani wrote:
Dear all,
I have a table with the following structure.
ield Type CollationNullKey Default
Extra Privileges Comment
--- -- -- ---
-
VenuGopal Papasani wrote:
> Once again i send the table data:
>
> Code Period Value
> c12004 22
> c12005 10
> c22005 15
> c32005 20
> c42005 15
> c52005 5
> c62005 30
>
Not until we know the logic behind the "code" and how the calculations
should be done.
-Original Message-
From: VenuGopal Papasani [mailto:[EMAIL PROTECTED]
Sent: Monday, August 14, 2006 1:03 PM
To: Peter Lauri; mysql@lists.mysql.com
Subject: Re: query needed
if it is stat
if it is static then it works fine.but we have lots of codes in a table
which should be done similar operation.instead varifying staticly with c1,c2
can we make dynamic.
On 8/14/06, Peter Lauri <[EMAIL PROTECTED]> wrote:
SELECT SUM(IF(code='c1', code, IF(code='c2', code, 0))) -
SUM(IF(code='c4'
SELECT SUM(IF(code='c1', code, IF(code='c2', code, 0))) - SUM(IF(code='c4',
code, IF(code='c5', code, 0))) FROM datavalue;
-Original Message-
From: VenuGopal Papasani [mailto:[EMAIL PROTECTED]
Sent: Monday, August 14, 2006 11:26 AM
To: mysql@lists.mysql.com
Subject: query needed
Hi,
i
Once again i send the table data:
Code Period Value
c1 2004 22
c1 2005 10
c2 2005 15
c3 2005 20
c4 2005 15
c5 2005 5
c6 2005 30
c7 2005
VenuGopal Papasani wrote:
Hi,
i got a table datavalue as follows
code period value
c1 20051
c2 20052
c32006 3
