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Query.filter = Left(Field_name,len(variable)) = Variable

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  • Query.filter = Left(Field_name,len(variable)) = Variable

    Hi All,

    I figured this query.filter, see Code, and work fine within test.
    I want to have combine it with the "Operation" code which copied from Action Scripts. I had an Query.filter Error at "Operation" Query.filter line.
    Code:
    dim vProjId as c ="11-0014"
    dim tSum as p
    dim qry as p
    dim rcd as n
    tSum = table.open("Quote_summary")
    query.order=""
    'query.filter="left(alltrim(Last_esthd_id),7)= "+quote(vProjID) 'Not work, Cannot find the records
    'query.filter="left(alltrim(Quote_summary->Last_esthd_id),7)="+quote(vProjID) 'Not work
    
    'query.filter= left(Last_Esthd_id,len(+quote(vProjId))) = +quote(vProjId) 'Not work
    
    'query.filter= left(tsum.Last_Esthd_id,len(Var->vProjId)) = Var->vProjId 'It works
    [COLOR="#B22222"]query.filter= left(Quote_summary->Last_Esthd_id,len(Var->vProjId)) = Var->vProjId  'It works[/COLOR]
    'query.filter= left(tSum.Last_Esthd_id,len(quote(vProjId))) = quote(vProjId) 'It works
    
    qry = tSum.query_create()
    rcd = qry.records_get()
    if rcd>0 then
    	vMsg1 = "There are matching records."
    	vMsg2 = "Do you want to reinstate again?"
        ui_msg_box("Notice",vMsg1+crlf()+vMsg2 ,UI_STOP_SYMBOL+UI_YES_NO)
    else
    	ui_msg_box("Else","What now")    
    end if
    qry.drop()
    tSum.close()
    The Operation Code
    Code:
    'Run a saved 'Summarize' operation: 'Summary_Estimate'.
    [COLOR="#FF0000"]'query.filter = "left(Esthd_id,len(Var->gProjectId)) = Var->gProjectId"  'It does not work 'Created by ActionScripts
    query.filter = left(Est_items->Esthd_id,len(Var->vProjId)) = Var->vProjId[/COLOR] 
    query.order = "recno()"
    'replace variables in the filter with their actual values	
    [COLOR="#FF0000"]query.filter = convert_expression(query.filter,"V")[/COLOR] [COLOR="#0000FF"]<--- Error Message[/COLOR]
    
    DIM operation_name as c
    operation_name = "Summary_Estimate"
    If operation_name <> "" then 
    	[COLOR="#FF0000"]summarize.run_silent(operation_name,query.filter)[/COLOR]  [COLOR="#0000FF"]<--- Error Message[/COLOR]
    End if
    Neither one of "Operation's Query.filter" keep get the Error Message. Does anyone know what is wrong on the Query.filter ?

  • #2
    Re: Query.filter = Left(Field_name,len(variable)) = Variable

    John, (Repeat this three times)

    A query.filter must evaluate to a character string.
    A query.filter must evaluate to a character string.
    A query.filter must evaluate to a character string.

    query.filter= left(Quote_summary->Last_Esthd_id,len(Var->vProjId)) = Var->vProjId 'It works
    I sincerely doubt this is true.

    query.filter= left(Quote_summary->Last_Esthd_id,len(Var->vProjId))+" = "+quote(Var->vProjId)

    might work, depending on date types of Quote_summary->Last_Esthd_id and quote(Var->vProjId).
    There can be only one.

    Comment


    • #3
      Re: Query.filter = Left(Field_name,len(variable)) = Variable

      Stan,

      thank you.
      I will try NEW one.

      Comment


      • #4
        Re: Query.filter = Left(Field_name,len(variable)) = Variable

        I think we've had this discussion in the past. The value passed to query.filter must be a character string.
        left(Est_items->Esthd_id,len(Var->vProjId)) = Var->vProjId is not a character string. Character stings have quotation marks (") at the start and end.

        You can work out how to construct the character string in the interactive window.

        Code:
        vprojid  = "ABC" [COLOR="#0000CD"]'establish the right data type for the variable[/COLOR]
        query.filter = left(Est_items->Esthd_id,len(Var->vProjId)) = Var->vProjId [COLOR="#0000CD"]'try to construct the expression[/COLOR]
        ERROR: No such field
        
        query.filter = left(Est_items->Esthd_id,len(Var->vProjId))+" = [COLOR="#FF0000"]"+[/COLOR]Var->vProjId [COLOR="#0000CD"]'see if quoting just the literal part works[/COLOR]
        ERROR: No such field
        
        query.filter = "left(Est_items->Esthd_id,len(Var->vProjId))"+" = "+quote(Var->vProjId) 'now do it the proper way
        ? query.filter
        = left(Est_items->Esthd_id,len(Var->vProjId)) = "ABC" 'doesn't this look like what the filter would be for say a report
        Piece together the various parts you want making each of them character strings.

        "left(Est_items->Esthd_id,len(Var->vProjId))"
        +
        " = "
        +
        quote(Var->vProjId)
        There can be only one.

        Comment


        • #5
          Re: Query.filter = Left(Field_name,len(variable)) = Variable

          Stan,

          How about this,
          query.filter = "(Field_a ="+quote(vName_a) )+" .and. (Field_B ="+quote(vName_b))
          I missing something, but I can not find the solution.

          Comment


          • #6
            Re: Query.filter = Left(Field_name,len(variable)) = Variable

            Stan,

            Never mind.

            Comment


            • #7
              Re: Query.filter = Left(Field_name,len(variable)) = Variable

              Glad you got it. Simple when you see the light, isn't it.

              For anyone else with a similar problem.

              query.filter = "(Field_a ="+quote(vName_a)+" ) .and. (Field_B ="+quote(vName_b)+")"
              There can be only one.

              Comment


              • #8
                Re: Query.filter = Left(Field_name,len(variable)) = Variable

                Bump for Stan,
                So if I want to pass the fieldname as a variable in a function that will change the table, do I do this:

                FUNCTION ReNumber AS N (fieldname AS C,begno = "01" AS C )
                dim tbl as p = table.current()
                tblfld = convert_expression("tbl."+var->fieldname,"V")
                tbl.fetch_first()
                while .not. tbl.fetch_eof()
                tbl.change_begin()
                tblfld = var->begno
                begno = increment_value(beg_no)
                tbl.change_end(.t.)
                tbl.fetch_next()
                end while
                ...
                END FUNCTION

                Cause right now its not working...
                Robin

                Discernment is not needed in things that differ, but in those things that appear to be the same. - Miles Sanford

                Comment


                • #9
                  Re: Query.filter = Left(Field_name,len(variable)) = Variable

                  Robin,

                  this looks wrong to me

                  begno = "01" AS C



                  Check the help file discussion of the FUNCTION statement. I think the default value for an argument must follow the data type, not precede it.

                  Comment


                  • #10
                    Re: Query.filter = Left(Field_name,len(variable)) = Variable

                    As does

                    begno = increment_value(beg_no)

                    possibly

                    begno = increment_value(begno)
                    There can be only one.

                    Comment


                    • #11
                      Re: Query.filter = Left(Field_name,len(variable)) = Variable

                      Small typo only was here... I was trying to get tblfld correctly. This worked:

                      tbl.change_begin()
                      Evaluate_template(tblfld +"="+begno)
                      Tbl.change_end()

                      I added ui_get_fieldname() so the function could be used more generically with a prompt for the arguments.

                      Tom,
                      I know I have seen it used both ways in a function. I suppose I should be consistent though, since outside of writing it like that in a function, I don't think it would work - like in a dim statement.
                      Last edited by MoGrace; 10-06-2014, 11:47 PM.
                      Robin

                      Discernment is not needed in things that differ, but in those things that appear to be the same. - Miles Sanford

                      Comment


                      • #12
                        Re: Query.filter = Left(Field_name,len(variable)) = Variable

                        Robin, if this function is to be saved to the code page of the A5 control panel, then using table.current() to get a pointer to the table you want to change becomes problematic. Or at least it seems so to me. If I were doing that I'd pass a pointer to the desired table to the function, instead. Glad you solved your issue. -- tom

                        Comment


                        • #13
                          Re: Query.filter = Left(Field_name,len(variable)) = Variable

                          That's a good idea Tom, since the purpose for this function is to be used in a right click menu.
                          And since some of my sortkeys are alphanumeric, I need to test for that too.
                          Robin

                          Discernment is not needed in things that differ, but in those things that appear to be the same. - Miles Sanford

                          Comment

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