Question

i have this query and i get error in mysql

Error Code: 1054. Unknown column ‘calc_diff_free’ in ‘field list’

I understand the problem, but how can i use this column without changing too much

I filtered the query to hide some data and to help you guys to read the query better

insert into ranking_1 (difference_free)
(
 select 
 f.ranking, rc.ranking,
(-1*(f.ranking-rc.ranking)) as calc_diff_free
     from base_testing.ranking_temp f
     left join ranking_1 rc
     on f.id=rc.id
     where 1
 ) 
on duplicate key update difference_free=calc_diff_free

Thanks for your help!!

Answer 1

I think i manage to get it working…

insert into ranking_1 (difference_free)
(
 select 
 f.ranking, rc.ranking,
 (-1 * (f.ranking-rc.ranking)) calc_diff_free
     from base_testing.ranking_temp f
     left join ranking_1 rc
     on f.id=rc.id
     where 1
 ) 
on duplicate key update difference_free=-1*(f.ranking-rc.ranking)

But it’s give me a few warnings…

85672 row(s) affected,Records: 42883, Duplicates: 42789, Warnings: 4