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a lookup using Xbasic

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    a lookup using Xbasic

    First, I am new in alpha Five, I am using V10.
    I have 2 tables, in the first I have all the field related to a Employee and in the second table I have 2 fields, the first field(Valor acumulado) is a value which I have to find and then use the second field( Valor normalizado)
    I solve it by using Xbasic and it works but I want to know if using the Lookup with an external table it's better.

    I tried it but allways got error .

    Fieldx = Lookup("table2","variable_1 = valoracumulado","valornormalizado")
    !!! for me is to look in table 2, the value of the table1 equal to a field in table 2 and if its found then return the value from table 2 to a fieldx.


    thanks in advance for all your help, and sorry if my english is not so good .

    Angel(Saltillo, Mexico)

    dim tbl as p
    dim tbl2 as p
    dim varnormalizada as N

    'Read in a sequential way all the first table
    tbl = table.open("datos_preguntas")
    tbl.fetch_first()
    While .not. tbl.fetch_eof()

    'look in the secod table for the value of Variable_1 which in in the table 1
    tbl2 = table.open("Tabla2")
    tbl2.fetch_first()
    While .not. tbl2.fetch_eof()
    If tbl.variable_1 = tbl2.valoracumulado then
    varnormalizada = tbl2.valornormalizado
    end if
    tbl2.fetch_next()
    end while
    tbl.change_begin(.t.)
    tbl.variable1norm = varnormalizada
    tbl.change_end(.t.)
    tbl2.close()

    tbl.fetch_next()
    end while
    tbl.close()

    #2
    Re: a lookup using Xbasic

    Code:
    Lookup("table2","variable_1 = valoracumulado","valornormalizado")
    If valoracumulado is numeric you want

    Code:
    Lookup("table2","variable_1 = "+alltrim(str(valoracumulado)),"valornormalizado")
    If it is character you want

    Code:
    Lookup("table2","variable_1 = "+quote(valoracumulado)","valornormalizado")
    Take a look at the examples in the wiki entry and follow the See Also links near the bottom.
    There can be only one.

    Comment


      #3
      Re: a lookup using Xbasic

      Originally posted by Stan Mathews View Post
      Code:
      Lookup("table2","variable_1 = valoracumulado","valornormalizado")
      If valoracumulado is numeric you want

      Code:
      Lookup("table2","variable_1 = "+alltrim(str(valoracumulado)),"valornormalizado")
      If it is character you want

      Code:
      Lookup("table2","variable_1 = "+quote(valoracumulado)","valornormalizado")
      Take a look at the examples in the wiki entry and follow the See Also links near the bottom.

      Comment


        #4
        Re: a lookup using Xbasic

        Hi, Stan thanks for answer.
        IF the field is character then you use alltrim but If it's numeric then you use Lookup("table2","variable_1 = "+quote(valoracumulado)","valornormalizado")
        or I am wrong? the word "quote" you have to type it or you must use " instead.

        I make all this questions because it didnt work
        and the last question is the value than you get from table 2 it's going to pass to the valornormalizado than it's in the firts table
        do you have to describe only Table2 or table2.dbf
        thanks for all your help

        Comment


          #5
          Re: a lookup using Xbasic

          IF the field is character then you use alltrim but If it's numeric then you use Lookup("table2","variable_1 = "+quote(valoracumulado)","valornormalizado")
          The reverse of this statement.

          Experiment with the AlphaSports customer table until you have the basics learned.The code below was developed in the interactive window.
          Code:
          varname = "graham"
          varcredit = 3
          ?"lastname = "+quote(varname)
          = lastname = "graham"
          ? lookup("customer","lastname = "+quote(varname),"firstname")
          = "Michael             "
          ? "creditrating = "+varcredit
          = "creditrating = 3"
          ? lookup("customer","creditrating = "+varcredit,"firstname")
          = "Sally               "
          There can be only one.

          Comment


            #6
            Re: a lookup using Xbasic

            Hi Stan, finally I solve the problem with the information you sent me and the links, I had to study and tried several options and at the end the sentence than works is :

            lookup("tabla2","valoracumulado = "+s_quote(tbl.variable_1),"valornormalizado")

            The field Variable_1 is numeric so the quote doesnt work for this data type and in the code you sent me you had an extra "
            Lookup("table2","variable_1 = "+quote(valoracumulado)","valornormalizado") in====>> +quote(valoracumulado)"
            but after several efforts it works
            thanks for your your help,

            Comment

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