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Query of a Query

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  • Query of a Query

    I need to make a query from a set, the problem is that I need to filter records from fieds in 2 diferent tables of the same set. The relationsip between this 2 tables is one to one
    I have tried the next code but it doesnt wroks:

    dim set as p
    dim tbl1 as p
    dim tbl2 as p
    set ="set_proyectos_reportes")
    tbl1= set.tbl_asignacion_proyectos
    tbl2= set.tbl_datos_reporte

    'query for tbl1
    query.filter = "Active=.t."
    query.order =""
    query.options = "T"
    indx = tbl1.query_create()

    'queri for tbl2
    query.filter = "program=.t."
    query.order =""
    query.options = "T"


  • #2
    Re: Query of a Query

    Hi Mauricio,

    Here is what I do, that does work:

    dim ndx as p
    dim tbl as p"[pathalias.adb_path]\charges_patients.set")
    query.filter="holdi1='No' .and. charge='Y' .and. readyi1='Yes' .and. i1bal>0.00 .and. pracid='"+session.pracid+"'"

    In this scenario, I reference any child set by:


    It may not be standard, but it does work.

    Gary S. Traub, Ph.D.


    • #3
      Re: Query of a Query

      Thank you gary
      have you encauntered any problems with opening a Set as if it was a Table


      • #4
        Re: Query of a Query

        No, I have never had any problems with this.

        Gary S. Traub, Ph.D.


        • #5
          Re: Query of a Query

          No, I have never had any problems with this.
          Still might be a good idea to use the function created specifically for opening a set.

          It is only when we forget all our learning that we begin to know.
          It's not what you look at that matters, it's what you see.
          Henry David Thoreau


          • #6
            Re: Query of a Query

            Well yes but that gets me back too my first question, How do I make a query of a query (Read the first post)


            • #7
              Re: Query of a Query

              dim qry as P
              dim set as p
              set ="set_proyectos_reportes")
              query.filter = "asignacion_proyectos->Active=.t.  .AND.   datos_reporte->program=.t. "
              query.order =""
              query.options = "T"
              qry= set.query_create()
              '''' Do
              '''' Some 
              '''' Stuff
              Something like that works for me,
              note the Dim Qry and the .drop()
              Also if your LINK from Parent to Child is a Character Type, then you can easily filter in the Set for the child


              • #8
                Re: Query of a Query

                Thank you Collin I didnt tought about that one


                • #9
                  Re: Query of a Query


                  I am trying to do the same thing but am getting the error...

                  Property not found
                  a_tbl.query_create method not found."

                  dim filename as c
                  exportfile = "Dep_Evid_Stats.xls"
                  filename = session.session_folder + exportfile
                  dim a_tbl as P

                  a_tbl = set.open_session("set_dependencies")

                  query.filter = "tbl_evidence->category = 'ECS-'"
                  query.order = ""
                  query.options = "T"
                  export.type = 4
                  export.names = .T.
                  export.file = filename
                  export.options = ""
                  export.field_sep = ""
                  export.record_sep = ""
                  export.fields = 2
                  export.field1 = "tbl_dependencies->dependency_id3"
                  export.field2 = "tbl_evidence->category"
                  if file.exists(filename)
                  response.redirect(session.session_url + exportfile )
                  end if

                  Any idea what I am doing wrong?