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update sl_no sequencely [message #299977]

Wed, 13 February 2008 22:47

salwa
Messages: 76
Registered: December 2007

Member

dear sir

my table data row=73
now another colmun sl_no
and update sl_no sequencely
1
2
3
4
.
.
.
73
how it possiable
please help

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Re: update sl_no sequencely [message #299980 is a reply to message #299977]

Wed, 13 February 2008 22:57

azamkhan
Messages: 557
Registered: August 2005

Senior Member

Crate another table with same sturcture. Now with the help of INSERT SELECT STATEMENT with ROWNUM in your SELECT STATEMENT as a colmun for your sl_no colmun insert all updated sl_no data into this new table and then delete all data from your current table an insert it back into it from the newly created table that holds the sequenced sl_no values.

Or simple you can issue and update like this

UPDATE [YOUR_TABLE] SET sl_no = rownum;

IF you want to order the data with respect to any column then do so.

Regards,
Azam Khan

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Re: update sl_no sequencely [message #299982 is a reply to message #299977]

Wed, 13 February 2008 23:01

djmartin
Messages: 10181
Registered: March 2005
Location: Surges Bay TAS Australia

Senior Member
Account Moderator

Do you wish to update each row or just display a line number?

David

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Re: update sl_no sequencely [message #299984 is a reply to message #299982]

Wed, 13 February 2008 23:04

azamkhan
Messages: 557
Registered: August 2005

Senior Member

Dear David,

I think that he needs to update a colmun sl_no. And I think that it is best that he should issue following

UPDATE TABLE [your_table] SET sl_no = ROWNUM
WHERE [if any]
ORDER BY [if any]

Regards,
Azam Khan

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Re: update sl_no sequencely [message #299986 is a reply to message #299982]

Wed, 13 February 2008 23:10

salwa
Messages: 76
Registered: December 2007

Member

thanks azamkhan
its done

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