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Reading Data from Large Text Files splitting files but read together

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    #16
    Re: Reading Data from Large Text Files splitting files but read together

    This would seem to be incorrect:

    qry = rtbl.query_create()
    nrecs = qry.records_get()

    IF (nrecs <> 0) then

    qry.drop() ...
    Robin

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

    Comment


      #17
      Re: Reading Data from Large Text Files splitting files but read together

      This is probably just a matter of style thing but I am all about getting rid of unnecessary code stuff. First, I wouldn't have believed it possible for a table to be named with a hyphen. Well OK, then. The "while .not. ..." line seems odd in both, Stan's has a parameter in there and I don't see that a parameter is needed/accepted with <tbl>.fetch_eof(), while Steve's has no associated pointer. I learned years ago from Finian about the table filtering method using <index>=<tbl>.order(). I have been using it most successfully ever since, and dropped the entire query.filter, query.order, query.create, qry.drop verbosity. It has made life so much more simple. And from many, I have learn to shy away from GOTO when unneccessary. From those points I'd adjust and condense the script to the following

      Code:
      'dim variables
      	dim vfilter as C
      	dim nrecs as N
      	dim states as U
      	dim shared st as C
      	dim shared tbl as P
      	dim rtbl as P
      
      'set states variables
      	tst = cstates("A|S"+crlf())
      	sts = words(tst,1,50,.T.,crlf())
      
      'build a collection variable
      	states.initialize("1|2","1","2",sts)
      
      'open tables and loop through netlogger table
      	rtbl=table.open("record-match") 'only open the destination table once
      	rtbl.batch_begin() 'turn on batch processing
      	tbl=table.open("netlogger")
      	tbl.fetch_first()
      	while .not. tbl.fetch_eof()
      	st=tbl.State
      
      	if st <> "" .and. states.exist(alltrim(st))	'check to see if the tbl.state exists in the collection
                      vfilter="State = "+quote(st)
      		qry = rtbl.order("",vfilter)
      		nrecs = qry.records_get()
      			if nrecs = 0
      		 	  'trying the fetch find key for writing 1st 50 states in log
      				rtbl.enter_begin()
      					rtbl.Call=tbl.Call
      					rtbl.Qso_date=tbl.Qso_date
      					rtbl.Time_on=tbl.Time_on
      					rtbl.Clubmemberid=tbl.Clubmemberid
      					rtbl.Comment=tbl.Comment
      					rtbl.Name=tbl.Name
      					rtbl.Band=tbl.Band
      					rtbl.Rst_send=tbl.Band
      					rtbl.Rst_send=tbl.Rst_send
      					rtbl.Rst_rcvd=tbl.Rst_rcvd
      					rtbl.Mode=tbl.Mode
      					rtbl.Freq=tbl.Freq
      					rtbl.Qth=tbl.Qth
      					rtbl.State=tbl.State
      					rtbl.Cnty=tbl.Cnty
      					rtbl.Dxcc=tbl.Dxcc
      					rtbl.Gridsq=tbl.Gridsq
      					rtbl.Pref_name=tbl.Pref_name
      					rtbl.Operator=tbl.Operator
      					rtbl.Qsl_via=tbl.Qsl_via
      					rtbl.Country=tbl.Country
      					rtbl.Address=tbl.Address
      					rtbl.Award_status=tbl.Award_status
      					rtbl.Award_net=tbl.Award_net
      					rtbl.Club=tbl.Club
      					rtbl.Callsign=tbl.Callsign
      				rtbl.enter_end()
      			end if
      	end if
      
      	tbl.fetch_next()
      	end while
      	rtbl.batch_end()
      	rtbl.close()
      	tbl.close()
      Last edited by Mike Wilson; 12-15-2017, 10:23 PM.
      Mike W
      __________________________
      "I rebel in at least small things to express to the world that I have not completely surrendered"

      Comment


        #18
        Re: Reading Data from Large Text Files splitting files but read together

        Since the fields in the tables are the same wouldn't this be a good scenario for using: data = tbl.record_data_get() then rtbl.record_data_set(data)?
        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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