Counting the records

  • Hi All ,

     

    I need to count the records in the table but the duplicate record should be counted once.

     

    Ex:

    A                       B

    1                       hhhhh

    1                       mmmm

    1                       kjkjj

    2                        332

    3                       dsd

    3                       asdfsa

     

    Now if we count the record the result should be count=3 not count=6

    from

    Killer

     

     

  • Try this

    select distinct ID from table_name

    query returns :

    A

    1

    2

    3

  • Or this:

    select count(distinct A) from table_name

    It returns: 3

    Ryan Randall

    Solutions are easy. Understanding the problem, now, that's the hard part.

  • Sorry not to mention that the ERP application(Naviosion Axapta) we are using do not support distinct function.

    so do we have another way of doing this

    from

    killer

  • Could you create a distinct view and run your query against that?

    If not, please mention what other restrictions you have to work round.

    Regards

    The absence of evidence is not evidence of absence.
    Martin Rees

    You can lead a horse to water, but a pencil must be lead.
    Stan Laurel

  • Erm, how about:

    select count(*) from (select A from table_name group by A) a

    Ryan Randall

    Solutions are easy. Understanding the problem, now, that's the hard part.

  • Hi Ryan,

     

    Thanx It worked like magic.

    Thanx to all of u.

     

    from

    Killer

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