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Compute Age

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    #1

    Compute Age

    This is three parts really but I'll take anything right now as I've been trying to get this to work for hours.

    1) I'm using gridlinker with the main table at the top and the data entry table below. The main table holds Name, DOB etc. In the grid below once the user has entered a date I'd like to compute the persons age. I created the code below (along with many many variations) but it still tells me there's an error "Variable is of different type" on the last line.

    The field is a character field so I thought I'd need to compute the age and then convert it to a character type. I just can't get it to work.

    Dim KidDob as c
    dim DA as d
    DA=Convert_Type(DataSubmitted.Assessment_dt,"d")
    KidDob=convert_type(lookup("[pathalias.adb_path]\P_Students","Stud_No = " + quote("999999"),"Stud_dob"),"d")
    DataSubmitted.Age_assessment=convert_type(age(KidDob,DA),"c")

    I entered the student ID (999999) to see if I can get anything to work but that ID would come from the current grid.

    2) Do I even need to do a lookup to get the DOB if the DOB field is already visible in the top grid?

    3) Is there a function to calculate the Age in Years and Months, for example 16.2 (16 years and 2 months)

    Hope it's okay to ask those questions together instead of starting a new post for each.

    Thanks
    -John
    Tags: None
    #2
    Re: Compute Age

    It is a little difficult from your description to know exactly when you want age calculated and how you want it displayed. However, based on what I think you are doing:
    1. It seems you want to know the "age" based on difference between DOB and a date submitted via your grid. Is this DataSubmitted.Assessment_dt value written to a table? If not it must be stored in a variable to be used later.
    The age in years is:
    age = (convert_type(DataSubmitted.Assessment_dt) - KidDob)/365.25
    (This assumes KidDod is a date). This can be displayed in a grid without conversion to character.
    You show a function "age" in your calculation but there is no such function, unless you have written a UDF.
    2. Yes and no. No if the age is a variable that is displayed as part of the grid that alreday contains KidDob.
    3. Do a search in the forum for "age years" and you will find a number of solutions.

    Garry

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      #3
      Re: Compute Age

      Oops!
      It has been pointed out to me that the function age() does exist. However, it does not give the age in years and months as required. As mentioned in my earlier post there are other threads such as this with a UDF that with a little modification can achieve whatever is required.
      Garry

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