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update column

4 New Member
hi all,
This command update table1 set col4 = rownum; updates all the records with auto increment number.But i want to increment based on date.
i.e when the date changes it need to start from 1.
for ex:
col1 col2 col3
-----------------------------------
01-jun-2007 a aa
01-jun-2007 b bb
02-jun-2007 a aa
01-jun-2007 b bb
now i altered one column as col4 (number datatype).
now i want to update as auto increment date as:

col1 col2 col3 col4
--------------------------------------------
01-jun-2007 a aa 1
01-jun-2007 s bb 2
01-jun-2007 d cc 3
02-jun-2007 a aa 1
01-jun-2007 b bb 2
01-jun-2007 s dfd 3
Like this auto increment number based on number i want.
Is there any advices.
Thank you in advance.
Jun 27 '07 #1
5 2508
debasisdas
8,127 Recognized Expert Expert
Do you want to save the number in the table or only want to display/retrive from database table.
Jun 27 '07 #2
logina1
4 New Member
Do you want to save the number in the table or only want to display/retrive from database table.
i want to update into table.
some random numbers is already updated in the column. now i want to update with correct serial number based on date.
Thank you for your reply.
Jun 27 '07 #3
debasisdas
8,127 Recognized Expert Expert
do u want to execute the same every time the data is updated/ changed in the table ?
Jun 27 '07 #4
logina1
4 New Member
do u want to execute the same every time the data is updated/ changed in the table ?
No only one time now i need to do.
Jun 27 '07 #5
logina1
4 New Member
Can anybody help. I want one query please.

i want like this.
I want to update the column not simply display. I want to increment auto increment based on date.If the date changes it should start from 1.

col1 col2 col3 col4
--------------------------------------------
01-jun-2007 a aa 1
01-jun-2007 s bb 2
01-jun-2007 d cc 3
02-jun-2007 a aa 1
02-jun-2007 b bb 2
02-jun-2007 s df 3
03-jun-2007 s df 1
03-jun-2007 s df 2
Like this auto increment number based on date i want.
Is there any advices.
Thank you in advance.
Jun 27 '07 #6

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