Question

I’m using MySQL.

I’m trying to select the minumum, maximum and average length of a field but I’m not sure how. Something like this:

SELECT 
  min as min,
  max as max,
  avg as avg
FROM COLUMNS
WHERE COLUMN_NAME like '%password%'

Any ideas?

Answer 1

select
    column_name,
    min(length(column_name)) as min,
    max(length(column_name)) as max,
    avg(length(column_name)) as avg
from columns
where column_name like '%password%'
group by column_name