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Alternative to topparent.queryrun to filter a browse

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    Alternative to topparent.queryrun to filter a browse

    In short: I have a form based on a set, with 3 browse in it, and I want to filter just one of them.
    I can use records_found = topparent.queryrun(filter,order,"","No","linked_table_to_filter",.f.)
    It works, but I got a negative feedback, because it messes up all the form data.
    In other words, all the data inside the other browses are moved and refreshed, the main table's data suffer the same problem, and all this rearrangement is about one second long, so perfectly visible and annoying.
    Now, I suppose the topparent.queryrun is a high level method that invokes a lot of refresh/resinch/redraw routines, many of wich totally useless for my task.
    How can I just filter in a clean way the linked table? Can be the query_create method useful?
    Thanks, Enrico

    Re: Alternative to topparent.queryrun to filter a browse
    Last edited by Peter.Greulich; 02-02-2013, 11:03 AM.
    AlphaBase Solutions, LLC

    [email protected]


      Re: Alternative to topparent.queryrun to filter a browse

      Thanks Peter!
      Honestly, I was looking for something more... aimed to my problem, but trying and testing I got a solution by myself
      For the interested ones, the better way I found is to get the pointer of the child table with tbl = table.get("child_table_of_the_browse"), and then to shot a query with itbl = tbl.query_create("",filter,"RECNO()").
      This sounds simple, but it gave me a lot of problem due to the old implementation of query variables (query.filter, query.order, etc).
      This was the right occasion for a deep study of the query_create, index and pointers topics, and now I got a far way better filtering that the built-in queryrun method.
      Bye to everybody!


        Re: Alternative to topparent.queryrun to filter a browse

        thanks for the feedback.
        Child browse filtering is a common bugbear on this forum.
        Table pointer methods seem to be more stable.


          Re: Alternative to topparent.queryrun to filter a browse

          It is.
          Add-on advice: create index for the target field.
          My case: the filtering procedure is activated by 4 buttons representing this year, last year, next year and all.
          The target field for the filtering is the numeric "year", of course. These buttons are thought to be used often, combined with other filters at different levels, and sometimes somehow I noticed corrupted filtering results, in other words records disappeared from the result lists.
          Things seem to get better by creating an index for the year field.


            Re: Alternative to topparent.queryrun to filter a browse

            One more possible (and newish) option if you have a saved query which might work for you: topparent:<browse>.Run_Saved_Query()

            ~This method was recently modified by Selwyn to resolve properly and work with a (set based) form embedded browse. (Of course, you'll first have to run the form and create & save a query.) ~ But it's a neat way to build & test your query with a "live form/browse."
            Last edited by SNusa; 02-03-2013, 12:05 PM.
            Robert T. ~ "I enjoy manipulating data... just not my data."
            It's all about the "framework." (I suppose an "a5-induced" hard drive crash is now in order?)
            RELOADED: My current posting activity here merely represents a "Momentary Lapse Of Reason."