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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.open("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"
    indx2=tbl2.query_create()

    indx2.close()
    indx.close()
    set.close()
    tbl2.query_detach()
    tbl1.query_detach()
    Cheers
    Mauricio


    #2
    Re: Query of a Query

    Hi Mauricio,

    Here is what I do, that does work:

    dim ndx as p
    dim tbl as p
    tbl=table.open("[pathalias.adb_path]\charges_patients.set")
    query.filter="holdi1='No' .and. charge='Y' .and. readyi1='Yes' .and. i1bal>0.00 .and. pracid='"+session.pracid+"'"
    query.order="billprov+patients->Fullname+idnumber+cdate(Date)+Svcode"
    query.options=""
    ndx=tbl.query_create()

    In this scenario, I reference any child set by:

    childtablename->field

    It may not be standard, but it does work.

    Gary
    Gary S. Traub, Ph.D.

    Comment


      #3
      Re: Query of a Query

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

      Comment


        #4
        Re: Query of a Query

        No, I have never had any problems with this.

        Gary
        Gary S. Traub, Ph.D.

        Comment


          #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.

          Set.open()

          http://support.alphasoftware.com/alp...SET.OPEN().htm
          Mike
          __________________________________________
          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
          __________________________________________



          Comment


            #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)
            Cheers
            Mauricio

            Comment


              #7
              Re: Query of a Query

              Code:
              dim qry as P
              dim set as p
              
              set = set.open("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
              qry.drop()
              set.close()
              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

              Comment


                #8
                Re: Query of a Query

                Thank you Collin I didnt tought about that one
                Cheers
                Mauricio

                Comment


                  #9
                  Re: Query of a Query

                  Hi,

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

                  a_tbl.query_create()
                  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"
                  a_tbl.query_create()
                  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"
                  a_tbl.export()
                  a_tbl.close()
                  if file.exists(filename)
                  response.redirect(session.session_url + exportfile )
                  end if

                  Any idea what I am doing wrong?

                  Thanks,

                  Denis

                  Comment

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