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count records in an index

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    count records in an index

    Hi All,

    I'm looking for a way to count the records that have been received this week.

    I have a date_in field which all this is revolving around.

    Here is my logic, and correct me if I'm wrong. I have made an index (in_count_week)which filters the records in my table. Below is the filter part of the index:

    WEEK(DATE())=WEEK(DATE_IN).AND. YEAR(DATE())=YEAR(DATE_IN)

    Here is the entire index copied from A5:
    In_Count_Week DATE_IN WEEK(DATE())=WEEK(DATE_IN).AND. YEAR(DATE())=YEAR(DATE_IN) Ascending All

    This index returns 75 records so I know it is filtering properly.

    In the form where I want to see this count I have a calculated field using the dbcount function:

    dbcount("th main database","In_Count_Week","")

    the problem is I don't know what to put for the Keyword since I want the function to count all the records in my index. I've tried tablecount but this function takes forever and I'm not having luck using the lightning query optimization.

    Any suggestions? Please help!
    Thanks!

    #2
    Re: count records in an index

    table.current().index_primary_put("In_Count_Week").records_get()

    If you are putting that index in effect for the form and want the count of the records shown

    count(somefieldname)
    Last edited by Stan Mathews; 02-09-2012, 03:37 PM.
    There can be only one.

    Comment


      #3
      Re: count records in an index

      thanks stan, but i actually want to be counting a few indexes at the same time - each a calculated field on my form.

      Comment


        #4
        Re: count records in an index

        I think you'll have to get the counts into variables of the appropriate scope in the form's oninit.

        tbl = table.open("th main database")
        wk_cnt = tbl.index_primary_put("In_Count_Week").records_get()
        tbl.close()
        There can be only one.

        Comment


          #5
          Re: count records in an index

          John,

          Have you tested the behavior of your "filtered" index over time? Is it returning the correct records when the "week" changes? Does this happen automatically or do you have to "rebuild" the index to see the correct records?

          Comment


            #6
            Re: count records in an index

            Tom, not sure what will happen over-time you may have a point there.

            The best fit for me would be to use tablecount() it seems, but its so slow I can't imagine waiting 10 seconds everytime I want to load the form. Not sure how to optimize for this either.

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