Hi,
you are not telling us about columns. Are you trying to check if all
collumns in the row are identical with some other row in the table? If yes,
I would try to sort columns in the select. Than something like this can work
(untested):
counter=0
lastRow=""
for actualRow in merge_table.select(orderBy =
merge_table.q.firstColumn,orderBy = merge_table.q.secondColumn):
if actualRow is lastRow:
counter+=1
else:
if counter:
write actual columns + counter+"D" to the file
counter = 0
lastRow=actualRow
HTH
Petr Jakeš
On Mon, Jan 5, 2009 at 11:23 PM, C Vora <[email protected]> wrote:
> Hi
>
> I'm somewhat new to Python and SQLObject (but have worked with ORM Wrappers
> before with Java). I have inherited a project which uses the above
> extensively. I have a somewhat novice question but couldn't find obvious
> answers so am posting here.
>
> So the code I have basically does a .select() on a merge table and creates
> an output file (Comma separated say) with columns I'm interested in . I want
> to now additionally mark in this file -
>
> a. duplicates that occur in succession only
> b. objects that have certain values for a column
>
> So for eg, if row X and row Y are duplicates, I want to have in the file a
> single row with the letter D at the end to mark Duplicate.
>
> Whats the best way of doing this?
>
> I thought of this pseudo-code:
>
> for x in merge_table.select()
> retrieve next row y ->> (how??)
> if x==y //duplicate
> add x to file & mark appropriately in file
> else
> add x and y to file
> reposition cursor correctly to next unread row (if needed, how?)
>
> I was trying to find a way to do this with SQLObject but couldn't easily
> figure out. I would like to avoid complicated cursor logic if I can help it.
>
> Any pointers would be appreciated.
>
> TIA,
> CV
>
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