Question

Ok. I am trying to update multiple rows with an value that increases for each row.

Update table set value=(.......) where update_row = something...

Is it possible?
the following rows:

ID:name:value
1:name1:0
2:name2:0
4:name4:0
5:name5:0
7:name7:0
9:name9:0

after update i want it to be:

1:name1:1
2:name2:2
4:name4:3
5:name5:4
7:name7:5
9:name9:6

And… Is it possible to order the update in some way so that the value that increases is in the correct order, like above? Using auto increment is not an option. i have to do this manually….

Thanks!

Answer 1

something like

set @rownum := 0;   
Update table set value=(@rownum := @rownum + 1)
where update_row = something...