On 2/29/2012 3:24 PM, Bob Pawley wrote:
Hi
After importing to postgis from a shapefile I have some rows duplicated.
Is there a method of making all rows unique after the import.
I tried identifying the rows with “select * where is not unique” without
success.
Bob
Do you have a column that is different between the two rows?
Are you wanting to delete all but one of the rows?
something like:
delete from table where id in (select min(id) from table group by
anotherColumn having count(*) > 1);
Totally untested, by the way, I'm mostly guessing.
try the inside to make sure it returns just the rows you want deleted.
-Andy
_______________________________________________
postgis-users mailing list
postgis-users@postgis.refractions.net
http://postgis.refractions.net/mailman/listinfo/postgis-users
