Multiple NOT distinct

Question

I\'ve got an MS access database and I would need to create an SQL query that allows me to select all the not distinct entries in one column while still keeping all the value

Answer 1

Another way of returning the results you want would be this:

select *
from
    my_table
where 
    B in 
    (select B from my_table group by B having count(*) > 1)

Answer 2

Select B, C
From Table
Where B In
    (Select B From Table
     Group By B
     Having Count(*) > 1)

Answer 3

select 
  * 
from 
  my_table t1, 
  my_table t2
where 
  t1.B = t2.B
and
  t1.C != t2.C

-- apparently you need to use <> instead of != in Access
-- Thanks, Dave!

Something like that?

Answer 4

join the unique values of B you determined with group by b and count > 1 back to the original table to retrieve the C values from the table.