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test for blank field

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    test for blank field

    Help Im' trying in field rules (alpha5 ver4.03 build 230) to determine if a numeric field is blank. isblank(field) returns "argument is incorrect data type"
    thanks for the help

    #2
    RE: test for blank field

    Carl,

    Have you tried a search using "blank field"? This has been asked before but I don't remember what the answer is.

    kenn
    TYVM :) kenn

    Knowing what you can achieve will not become reality until you imagine and explore.

    Comment


      #3
      RE: test for blank field

      You can check if the value of the numeric field is equal to zero. Unfortunately, a blank numeric is not actually zero, but will contain a near zero value with some digits in the extended decimals. The way around this is to round off the numeric field first and then compare to zero. For example, if your numeric field is designed with 4 decimal spaces and is called "number"

      round(number,4) = 0

      will be true if the field is really blank

      Jerry

      Comment


        #4
        RE: test for blank field

        Carl,

        isblank() is one of the odd birds in the alpha five hen house. The argument inside the parentheses must be surrounded in quotes.

        This is no good:

        isblank(fieldname)


        This is good:

        isblank("fieldname")


        Wonder if this would make a difference for you?

        -- tom

        Comment


          #5
          RE: test for blank field

          The syntax is

          isblank("fieldname"),

          note the quotes around the field name, they are required.
          There can be only one.

          Comment


            #6
            RE: test for blank field

            You're getting faster at your typing Tom!
            There can be only one.

            Comment


              #7
              RE: test for blank field

              Thanks everyone for the information......

              Comment

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